Showa shock shim stack

  • the valve stack. Race Tech’s Todd Davis tells us that the stock rear shock’s short stroke, high leverage ratio, and linkageless design require stiffer settings in the initial part of the travel order to work best. improvement over shock 2016 Showa air shocks. ▻Valving instructions for Shocks with Shim ID Adapters ClickHere. tossing it. The Sachs Beta shock responds best to minor valving mods that improve the shock performance as whole. Damping forces produced by a shock are the result of controlled fluid dynamic flow losses through the suspension circuits. Arlen Ness Chrome 2 Velocity Stack Air Cleaner Kit For Sands 111 - 124 Engines. The all-new, 999. So that leaves disassembly of a normally non rebuild-able showa shock body. 2013: The 2013 model year was the last of the BMW-owned, Italian-built, old-school Husqvarna CR125s. 09)/1198 (09-12) w/Showa Forks. GP replaces the stock piston with its own valve and shim stack 1 product rating - 1996-2000 SUZUKI RM250 REAR SHOWA SHOCK - REBUILT INCLUDES UPPER SHOCK REAR SHOCK PISTON AND SHIM STACK (Fits: Suzuki) Pre-Owned. Checkpoint Off-road was founded by Matt Stavish. Pour VALVING INSTRUCTIONS - STANDARD. Williams built a new shim stack with new shims, then assembled the base valve and cartridge changing shim stack in 01 kx250 forks Post by cg2000 » 04:42 pm Nov 23 2015 Hi, so I'm struggling to track down the correct combination info on the forum for adjusting 2002 KX 250 fork for woods riding. Two key words ran headlined throughout the Rebel’s development program: ‘SIMPLE’ and ‘RAW’. Ref: NTSPTDUC. The most powerful GSX-R ever. With 30 years of racing experience Matt had factory rides with three companies and worked closely with some of the best tuners in the business. 20 shims to the Low speed Compression stack, and I added 2 extra 40 x 0. Our focus is on giving customers superior service and low pricing combined with quality merchandise from reliable manufacturers. hi please could you let open the stock shim stack database it is very useful for RM125 SUZUKI 1999 RM 125 99 (LOT A) SHOWA SHOCK SHIM STACK & PISTON. The Compression adjuster has a tapered needle and shim stack instead of a high speed pop off valve that comes on most KYB stock rear shocks. Shop online for OEM REAR SHOCK ABSORBER parts that fit your 2001 Honda XR400R A, search all our OEM Parts or call at 800. VALVING INSTRUCTIONS - STANDARD. But to do so much with so little is an art form in itself, an exercise in minimalist design where every detail matters. The forks were upsized from 37mm to 41mm and featured preload adjustments, while a new single rear shock sported preload and rebound adjustments, in addition to a new box-section swingarm. on the shim stack Shims. First row shows the shim face for all rebound valves and for compression valves row three shows shim face for Öhlins and RT and fourth row shows shim face for Showa. Rebel 500 Key Features 3. The bottom of the cartridge is at the RH Cane Creek Double Barrel InstructionsCongratulations on your purchase of the Cane Creek Double Barrel (CCDB) rear shock. If search results do not exist, please search by others keyword. By no hand, October 15, 2006 in most production based forks or shocks will seldom have the proper means to blow off the Flow losses are controlled by the stiffness of the shim stack on the shock absorber valve. A lot of the secrecy deal with shim stacks is the fact they dont want you to see its the same stack used over and over again. Thanks to all who have used the valvinglogic website. Increased flow area puts valving control on the shim stack for outstanding tunability. (LOT B) SHOCK PISTON AND SHIM STACK (Fits: Honda) C $57. Going in for a closer look, our stripped parts here make up the rebound valve, with the four thin discs being the shim-stack. 8cm3 in-line four cylinder, DOHC, liquid-cooled engine, is the most powerful, hardest accelerating, cleanest running GSX-R engine ever built. For example, the same shock may use a bleed hole to provide low speed damping, a shim stack to provide medium speed damping, and a spring/ball check valve to regulate high speed damping. $25. In 1972, Yamaha introduced the Mono-Shock single shock absorber rear suspension system on their motorcycles competing in the Motocross World Championships. 49. Shop with confidence. The running pressure (170-200psi) ensures that the oil will remain stable as it is forced through the main piston’s compression shims. The works fork pistons are by far the best fork piston available for the WP fork. The compression damping has been firmed up into the middle. Get your Stack Stock! Showcasing a full array of stack stock for sale now! Nitron NTR R1 Sport - Big-Piston Integral Pressurised Gas-Monotube Rear Shock Absorber for Ducati Motorcycles . And revalving of both the compression and rebound shim stack. 1 Styling. Keep a fresh stack of As you remove the washers, shim We found that going up on the fork’s spring rate or having the compression shim stack re-valved could bring the forks up in their stroke. Discussion in 'Non-Husqvarna Motorcycles' started by Hurky, I hope you can help me with my Showa shock from a Honda CR250 2002; Suspension Direct in a vendor and manufacturer of suspension parts for Motocross and UTV Applications, selling brands such as WP, Showa, KYB, Walker Evans, and Fox JavaScript seems to be disabled in your browser. They want shim stack of Sam Hill. rm125 suzuki 1999 rm 125 99 (lot a) showa shock Proven bolt-on shock valving system that improves control, traction, performance and bottoming resistance. Interestingly enough after doing some research, the showa "A kit" ktm replacement forks are valved really close to stock crf250x forks, the difference being they have 1 more face shim on the compression stack. Gold Valves commonly triple the flow area over stock pistons, putting valving control on the shim stack instead of the piston. One thing that may cause some shock builders an issue is that air can sometimes lurk in the valve under the shim stack. Now I have a much better shock with a HS circuit to handle the whoops and high speed very rough trails. On the opposite side of the shock there's space to do a two speed shim stack. SD2 - Remove the shock shaft nut and the valving stack. I also have 03 KX250 forks, with MX-Tech shim stack and some slight internal mods that balance this package out quite nicely. one is to determine when the The picture below shows a stock Showa cartridge fork compression valve so that the shock isn't ramping up like crazy regardless of high speed damping, Suspension both forks and shock on all dirt bikes; regardless if they have springs or air This shim stack is primarily what is changed in a suspension “Revalve”. A Showa/Honda RS250 GP 25mm valve. Last year’s free bleed around the compression shim stack was the source of the flutter. showa twin chamber fork shim stack. The MX showas are identical forks, with a different piston and valving. Just a big stack of huge stiff shims. The site started in 2004 giving riders and tuners from around the world the ability to share suspension tuning information and data. Shock Spring Upgrades; and a basic internal valve and shim stack. Clamp the shock body in a padded vice. The suspension which was designed by Lucien Tilkens, became so successful that other motorcycle manufacturers developed their own single shock absorber designs. Rear Angled Shim Kit by Supreme Suspensions®. When you purchase Gold Valves, Race Tech takes your weight, riding ability and the type of riding you do and calculates a shim stack for you to install. Developed in partnership Scribd is the world's largest social reading and publishing site. Setting the shock at 108mm of race sag balanced out the The suspension has also been updated, with Showa’s new Dual Bending Valve system as first seen on the NC750X last year – it’s basically a two-way rebound and compression valve that allows damping oil to move back and forth rather than a one-way shim stack forcing oil in a circular path. Recently bought a bone stock 2002 SV650S. KTM 990 Shim Stack Base Valve Assembly - Pt3 - Duration: 5 at much higher speeds and the shim stack exclusively will adjust the high speed damping curve. Sometimes there are 3 peenings around the outside base of the cartridge, just drill those out till you can push the stack in as shown. You can compare one shim stack against another on a given piston, that part is pretty easy, the hard bit is accounting for all the less simple stuff that isn't just a shim stack on a piston - like anything with shim preload of any kind, any valves that aren't just shimmed (boost valves, poppet valves etc). 3. Stock Showa cartridge rod with rebound shim stack holder disassembled. The next shim stack to follow is the “mid speed compression stack”. Installing a new Shock Shaft Assembly, pick up here!! Clamp the shock body in a vise, install the compression adjuster and partially fill the reservoir with light (3w) shock fluid. This can be resolved rate. * Cleaning of the components followed by a visual inspection. Mini Bikes. Remember that the stack blocking nut must be tightened very little, to avoid the axle cracking!!! Starting to get some time on my KX 2000 forks on the KDX. Ducati used this method on thier tubed axle on Showa forks for many years. A modified mono-tube shock is a lighter shock with less rod pressure, less seal drag, a greater range of valving, and faster heat dissipation. Here our shock shaft tool to unscrew the shim stack in the stock shock absorbers KYB and Showa 🛠⚙️⚒ Designed by Lainer Suspension Racing | visit our website www. Front Fork Products and Upgrades Essential Solutions For Better Bump Absorption and Handling. 1995 RM 125 - SHOWA Shock Rebuild Another trick is to smack the clevis with a rubber mallet when bleeding the shock, so that the shim stack will flex a bit more SHOCK GOLD VALVE INSTALLATION - STREET / ROAD RACE 44mm On KYB and Showa there are two different threads used. I've just recieved the seal kit to rebuild my Dakar's leaking rear shock. Proven bolt-on shock valving system that improves control, traction, performance and bottoming resistance. 9 springs and a digressive C34 shim stack on the OEM valve bodies. 7-1-18. 支. History and Development of the F650 In the Beginning. A: BRAND: ITEM : a&d aba abc abc abe netsukeiki abukuma abw accurate accuride ace ace giken achilles aco act adachi adamant adex advantec advantest(1) Damping. Any other adjustment from now on will be only on the shock if I can still improve the balance with the front. For Showa forks, the compression stack/holder is on the inside of the cartridge and it pushes in as shown. It was quite easy get the Showa to fit. Our facility has an in house Shock Dyno, Computer Generated Spring Rater, Complete Machine Shop to make I took apart a shim stack for a GSXR600 on Sunday and the compression circuit was so incredibly overbuilt I had to question the sanity of the tuner or of his customer. Contents Strange shim stack Comp Rebound Piston Quick observations: shim stack is stupid and the piston holes are tiny. New Suspension School Website Launched. It's largest shim is positioned behind the smallest diameter shim on the low speed stack. 20 cross shim. Stock Showa rod and rebound shim stack on the left, new rod and K-tech shim stack on the right. 54kg and shock spring 6. These shim kits will make the shock work Rebuild kit for the OEM, Showa rear shock for the '85-'86 Honda ATC 350X. I tried a dual stage shim stack in the front and it FULL SERVICE SHOCK REVALVE // $185* Complete disassemble and internal cleaning of shock. Valving instructions for Shocks with Shim ID Spacing Shims must be larger in diameter than the smallest shim in the stack However, two . The 5th and 6th gen rebound pistons flow oil from a small port drilled through the damper rod just above the valve that drains out through the hollow of the shaft. There are so many shim combinations available that tuning and performance characteristics are nearly limitless. Owens 2004 CRF450R Woods Conversion Shock Services & Pricing Walker Evans, Showa, Suspension dynamics , Elka, Custom axis, Works, PEP, Adjusting shim stack according to the customer’s request KTM AER 48 Air Fork Midvalve/Rebound Piston Kittesting results. As the riding season rapidly approaches, most riders are looking to get their … Kx65 / Rm85 / CR80pre'95 Shock Piston and Valving Kit. 2 kgs/square cm for a shock spring and . If the pressure is too low, the oil pressures on either side of the valve (shim stack) can change creating “vaporization” or bubble generation. The coolest thing that Husqvarna did in 2013 was to include a complete 144cc top-end kit with National Tool Supply is a owned and operated business offering a wide variety of products and services to contractors, mechanics, and home owners a-like. Too Tech started suspension revalving for off road and desert riders in the earliest days of the linkage based mono shock suspension. After taking the Showa BFRC shock apart and reviewing the design first hand the … MXT 2017 New Products. "OD" will refer to outside diameter, and "T" will refer to the thickness. To me I prefer a stock shock as the 18mm shaft makes the rear end feel to harsh/rigid compared to the standard 16mm shaft. The "low speed compression stack", which is usually the largest/stiffest stack in the shock, is positioned closest to the piston. However, two . SS 900 (Showa 43) 2000-2002 105/D14 Adjustable cartridge kit $599. On Last year’s AER fork had free-bleed around the compression shim stack, which made the damping too light in the mid-stroke. 95. Springs are replaced if necessary. Just a suggestion here, drilling axle for adjuster access. They've got the shock shaft laying the wrong way, so I don't know how much I trust their assembly order, but I think the top row of shims is the compression stack and the bottom row is the rebound stack. A shock requires a 2 stsge or 3 stage stack. I am going to change out the piston, shim stack, spring and service them. About . I may go this route. IMO his fork part pricing is the same or a little below RT, for very similar parts, and his modified shocks represent very good value. Combined with a new Showa shock the bike is equipped with very capable components that are able to be tuned for a wide variety of conditions and riders. 1″ and into the rebound side of the shock absorber unless fluid pressure is sufficiently great to bend the periphery shim stack 36C″ away from the shim edge support 29. I am happier with the setup but hardly a Suspension Tuning Guide Street Bike or Road Racing Applications Shock sag 25-35 mm These are then matched to a very basic shim stack which creates a damping 2009 Honda CRF450R suspension shim stack Hi, Motods497 for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Honda, despair not, for a mere zero $0 you can download another one. and comp. This means the 1st shim on the piston face is full width with shims stacked in smaller diameter till the stack is about a eigth of and inch tall then a full width shim and another tapering stack. Compared to conventional shocks that generate damping by pushing oil through the internal piston and valve shim stacks fitted above and below the piston, damping control The "low speed compression stack", which is usually the largest/stiffest stack in the shock, is positioned closest to the piston. Find great deals on eBay for kx 250 shockabsorber. My changes were pretty simple. 012" thick shim, as the two thinner shims would deflect more (be softer) than the single thick shim. pdf - Free download as PDF File (. This is the assembled Rebound rod assy with the new valve body and shims etc. If works by adding a device that has a stack of thin metal shim blocking Clearly if you revalve a Showa fork it will work better than when stock as you will be putting in Big port comps / rebound pistons & be changing the compression stack if these forks have them as well as the needles to compensate the extra flow of oil that the big pistons allow now & this will in turn give a much more compliant feel over bumps As the shock extends, oil is pushed through the external rebound damping circuit, through the rebound valve stack and back into the shock body, on the other side of the piston. The Motorcycle Suspension Setup: Getting to Grips with a Black Art harder springs and modifying the fork and shock internals. I give up -- New Shock ordered USA bikes do not get the new Showa Dual Bending fork. Too hard for me. Flow losses are controlled by the stiffness of the shim stack on the shock absorber Response outputs show the suspension velocities over the stroke, damping The sequence of the shim stack serves two functions. The shock includes an outer body, a shaft piston, a plurality of deflective discs, and a divider piston, wherein the divider piston is installed at a particular location inside the shock to create a gas chamber. Revalving shims for Showa, KYB, WP, Marzocchi and most shocks and forks Revalving shims for Showa, KYB, WP, Fox, Marzocchi, RydeFx, Walker Evans, and most shocks and forks Current available sizes shown below Standard Shim Stacks. I guess we won't know because pinkbike didn't review it like Showa makes some race stuff for road racing but it's not stuff you can buy unless you're pretty deep into pro racing. Forum Index > General > Motorcycle Setup > Rear shock rebound clicker issue on with a Showa rear shock the flow of oil that bypasses the shim stack. For more Forum Main Tech Help/Race Shop What really makes a Showa A-kit ride better than production suspension? and shock body went to Japan for Kashima coating, fork by converting the base unit to a standard shim stack design with a blow‐off spring of a lower bushing height and stiffer spring. The unit is also adjustable for preload, rebound damping and high and low speed compression damping. Shock valving shims are precision machined in various thicknesses and are heat treated to hold up to temperatures exceeding 500 degrees without losing strength. Install the valve body and complete the shim stacks. Showa rear shock valve stacks keyword after analyzing the system lists the list of keywords related and the list of websites The rebound valve shim stack , in This thread on ThumperTalk has been enlightening but its is based upon CRF450 Showa forks and shock. In order to take the harshness out using the stock piston the bottoming resistance goes away and vice-versa. The C2P brand shims are hi-quality steel valve shims made with (Sandvic 20c) material for the best possible consistency. On the track the small changes made for big improvements. The 450 is also using the same basic Showa rear shock as the 250X, although with different valving and spring rate. ▻Valving On Showa shocks, the peening also retains the rebound adjuster hardware inside the shaft. He modifies the shock itself to make it longer, and alters the shim stack as well, and provides a rider-specific spring. Corsair Industries Showa Rear shock The “low speed compression stack”, which is usually the largest/stiffest stack in the shock, is positioned closest to the piston. Remember, also, that placing one shim instead two, having twice tickness (i. A kit is available for DIY tuners. Remember that the whole stack thickness cannot come down the stock value too much. through the compression shim stack and the bleed valve and at the Now as you can see I am on a Showa A-kit shock, but the only big difference between the stock shock and the kit shock is that the shock shaft on these kit shocks are 18mm in size, the stock shock shaft is 16mm. Above is from an artical by Max McAllister . Ktm 450 Sx 2003 Shock Wp Pistons And Shim Stack. Just pushing the valve through the oil slowly doesn't release it as the shims never open and the oil goes through the bypass or low speed orifice. 援者への感謝2019年1月1日、国境なき医師団(msf)は支援者への感謝の意をホームページで述べた。 世界状況の複雑さと困難さが増した2018年、国境なき医師団は世界中の人々への援助活動を続けてきた。About . from the mid valve stack and Lainer Suspension Racing® Have a workshop? We have many useful tools for you! Here our shock shaft tool to unscrew the shim stack in the stock shock absorbers KYB and Showa 🛠⚙️⚒ A half-turn of compression was removed from the Showa BPF up front and a full turn added to the Showa rear shock. The stock shock that comes on the 04/05 GSXR 600/750 model is a Showa brand shock and has an awesome feature about it. Float values on the mid-valve stack control transition from low speed to mid-speed damping. 0567 PLATE, END (SHOWA) 52428-KA4-832 ReStackor pro gives you the capability to evaluate changes to the base valve shim stack and mid-valve stack float and relate those changes to the clicker settings of your existing setup. This is positioned right behind the low speed stack. A vavle from a Fox shock: Compression. Thanks to Richard #230. Select Vehicle. cycleinnovations. In this segment, Paul explains the gold valve and valve stacks in depth. Shock Absorber Basics. 012" thick shim, as the two thinner shims would deflect more (be softer) than the single thick shim. By A general rule is that a change of . A lot over 200 though, and usually guys far north of 6' who run the stiffer rates to control pitching. The Showa suspension has some revised settings; the lower fork legs got a new honed surface treatment for smoother fork movement; and increased oil capacity above the piston and shim stack allows The valve stack (also known as the shim stack) is straightforward. ▻Valving instructions for most standard Shocks (without shim ID adapters) Type 2 Adapter Base Plate and Adapter Nut creates the shortest total stack height. 00 PCR Shim stack, Jet, Spring / Spring seat $699. flow only through the shim stack on the cartridge Thanks for the OEM spring rates and all. com. More convenient for sure, but I have to work out the shim stack needed to handle the higher pressures. 2014 brought a new frame design along with updated 48mm Showa Forks and Showa shock along with a new linkage ratio. I'll design a SFF implementation in traditional 20mm as well as a 37mm (known as BPF - big piston fork) which Showa introduced in 2012'ish. It's way easier to go slower with shock changes than it is faster. We have tested KYB, Showa and WP bladder forks. There is nothing wrong with our stock valves, but Race Tech flows differently, so its shim stack would be semi useless if used on a showa or kyb valve. www. Ok, challenge accepted. You search Auto repair manual PDF showa shim stack, if there are search results will appear below. 2018 Suzuki RM-Z450. * Opening of the shock, draining the oil and removing the shaft with piston, shim-stack and seals. SHOWA Shock Rebuild | Shim stack for stock kx450? Throwing a non standard progressive spring into the mix would upset the leverage curve in a hard to predict way not anticipated by the shock designers - so for optimum handling after changing to a progressive spring you would want to spend a lot of (expensive) effort on the shim stack. com | #lainersuspension #tools #lainersuspensionspecialparts #workshoptools #suspensiontools #suspensionservice #workshop The next small shim after the 6 is the cross over shim. Add Flutter Shim (0. 74. 00] - To learn about flutter shims, click here. 9 based on 15 Reviews "Highly professional workmanship, an eye for detail Jump to Sections of this page The holes will only pass oil through at a certain rate so as the shock moves slowly most of the oil will pass through the holes. Remove the shock shaft nut and the valving stack. If there are any problems disassemble the stack and look for burrs or dirt on the base valve or shims. that route you may want to add a face shim or you will be quite far in with the adjuster. Check for dirt in the stack, and that the shims are sitting flat against the base valve assembly. Any combination can be used. They will fit on 01-06 600, 750, 1000 GSXR'S. Shim Stack & Piston Operation & Design On the shock servicing course students learn A RM250 would probably have had a heavier spring. I was going to meastre them but seems it pays to procrastinate. On the BFRC shock the main * Dismantling the shock, spring, retainers, hydraulic pre-load adjuster etc. Arlen Ness . A quick shim stack change by Gaston Motorcycle Werks and another 10mm’s of fork fluid made the difference for me. The KYB shock that comes stock on your bike just has a high speed pop off valve that is worthless. If you are using a progressive stack with a gap shim in place, by making the gap shim thicker, the shock becomes softer. I think I will end up doing this but I haven't ridden phase 1 yet, so time will tell. I had to use an extra washer (provided) so the nut would clamp the shims and not bottom out on the shaft shoulder. Expect a dramatic improvement in comfort, bump compliance, and performance with just a shock service, which gives us the chance to remove all the break in contamination, clean the shim stack, and rebuild it with fresh nitrogen, synthetic oil, and grease. psd Author: mmarquez Created Date: 3/29/2007 4:24:53 PM Bitubo shock review About a week ago, I picked up a pair of Bitubo #BW024 HKX92 shocks to replace the aging stock Showa shocks on my 2000 S. If you are going to do anything to the rear buy a 04/05 GSXR 600/750 Showa shock it has a shim stack and tapered needle for the compression adjuster. . This lets that 1st shim on the piston face open an eigth inch max then it touches that next full width shim . pdf), Text File (. The remarkable feel from the brakes is matched only by the communicative feel of the well-damped Showa BPF front suspension. Started looking for a replacement for my RockShox Ario 2R and surprised to find that most shocks have sealed dampers, shim stack tuning Showa shocks every 10k As well as the shim stack, there is a fixed orifice in each valve body that provides low-speed damping control and bypasses the shim stack. The suspension worked well when soaking up small braking Needles adjust low-speed damping, and shim stacks affect high-speed by restricting oil-flow through the machined valve ports (the sprung shims prevent hydraulic lock). Can anyone recommend a good shim stack for me? Spring rates? I just miss a soft suspension that soaks everything up. Help with Shock Shim Stack. Riders aintain control at faster speeds. 33 mm Showa Style Piston with Piston Ring. The original compression damping holes are drilled out to a much larger size, so they don't do anything, and compression damping is handled by the shim stack and its spring. Pour The most common shock valving configuration (standard valving), is a progressive shim stack, or pyramid shim stack made up of 5 to 10 shims of the same thickness and varying diameters stacked in order from largest to smallest. showa shock shim stack flow is supplied from four separate sources (rebound stack, compression check valve, and both clickers), there's no increase in rebound damping; in fact it's noticeably less than before, mostly because of the shim-stack changes. I am looking to upgrade the front suspensions and rear. 99: time left: 17d 23h 52m. D. more rebound and less compression in the shim stack. 006" thick shims do not equal one . I've never actually take apart a showa fork, what do you mean shim stack on the bleed? if the shock is anything Ok the new valve is shown above with its shim stack, and the stock Showa is below, they are both showm shim side up and check valve down. The remaining shims thereafter constitute the high speed stack. 49: 15% off: $29. 95 retail rm125 suzuki 1999 rm 125 99 (lot a) showa shock shim stack & piston. Aprilia Falco, Tuono, and Mille's fitted with Showa forks. Shim stack rules of thumb? internal pressures in a fork or shock. $76. showa shock shim stackFlow losses are controlled by the stiffness of the shim stack on the shock absorber valve. The next shim stack to follow is the "mid speed compression stack". Most stock shock settings with correct spring rates work well. Retune your shim stack Revalving shims for Showa, KYB, WP, Marzocchi and most shocks and forks. Front: Compression valves nearly the same as Race Tech "gold valves" (CSR compression valves) with standard recommended Race Tech compression shim stack, and CSR rebound pistons with my own "first estimate" rebound shim stack, VTR1000F rebound adjusters Result: Slightly under-damped in high-speed rebound (perfect for low speed). It is a complete kit, which was very good, because I don't know much about fork suspension internals. Refine. This results in outstanding tuneability, improved Shim I. They come in a variety of sizes ranging from 6, 8, 12, and 16mm, ID in metric and . I have In theory, an ideal fork would have different shim stack configurations between the left and right assemblies, but the calculations and testing in order to achieve a better result than a side-by-side configuration would be costly and very complex. As the shock compresses, oil is displaced by 14mm shaft. hich distributed excess energy into the spring. $29. txt) or read online for free. In the fork the bv stack, mv stack and ics spring are all matched to create a "pressure balance Shock Cavitation Fork Cavitation Sample applications of Shim ReStackor and ReStackor pro to solve practical suspension tuning problems. Changing the valving on the 47mm Showa forks is as easy as taking the top cap off and modifying the shim stack—you don’t have to strip the forks down to nothing to get at the shims. 500 ID in imperial (Penske). Improved, long-wearing, low-friction sealing design decreases fade. Spring rate, shim stack, bleed, viscosity (oem and aging), shape and magnitude of road stimulus, throttle position and vehicle acceleration, road speed, shock settings, rider weight, material friction in shock, seal friction etc etc. to a very basic shim stack which creates a damping curve for the given (Ohlins, Fox, KYB, Showa), matching Rear Shock three turns from max and rebound turn it One is a Kayaba, the other a Showa (sorry, I forget which is which). Marzocchi 43mm fork design and impact of oil level on spring rate in this case carrying a rebound shim stack. I added 3 more 44mm x 0. e. Shock spring setting 1982 Showa Honda CR 250 480 Shock Revalve – $160. The most knowledgeable source for all Ohlins FGK 30 mm Cartridge Kits. After testing hundreds of different valving configurations (not just shim stacks, but any and all internal parts that affect damping), we begin to see patterns. Im looking for suggestions. Showa OEM shock rebuild. 00 Brand Yamaha Seller timwu12 Available on Bay Area Riders Forum Location Mountain View Description. RE Suspension is a full service company – offering various suspension services in addition to parts and accessories. If you buy the ohlins 20mm valve kit, its a universal setting. 008") [+$4. Was Shock Re-Valve (Includes shims and labor) – $219. Looking to thin the heard and I’m going to the track less and less. Suspension Direct in a vendor and manufacturer of suspension parts for Motocross and UTV Applications, selling brands such as WP, Showa, KYB, Walker Evans, and Fox JavaScript seems to be disabled in your browser. a very basic shim stack which The rebound cartridge-replenishment flow is reduced slightly, but since rebound is a medium-velocity event and repl. For people who want to upgrade their rear shock on their 1000 this will be a great deal for them since they come stock with a POS KYB rear shock that is useless. RM85 kit replaces 12 mm shims with 10 mm. See more like this KX250 KAWASAKI 1998 (LOT E) KX 250 98 SHOCK ABSORBER PISTON & SHIM STACK From United States KX250 KAWASAKI 1997 KX 250 97 (LOT A) SHOCK PISTON AND SHIM STACK showa shim stack. Click on image to visit new site. I ended up with RaceTech 0. AER Leaf Spring Midvalve Kit w/Piston & Shims. The shim stack, which often is a combination of 20 or more shims, determines the shock's damping qualities. Both felt the Sachs shock is a good unit and worth the effort vs. Re: showa conversion in the frequent mods section of the zone there is a thread with the raceteck valve and shim stack details for this. Phase 2, if needed, will be installing a shim stack on the midvalve, modifying the base valve to match, and having a "real" offroad fork on the bike. K-Tech Road, Track and Race Front Fork Piston & Spring Kit Upgrade . About . Price $4,500. The larger diameter shim that sits on the piston surface is the first shim to resist oil flow and generally affects the low-speed compression. the total thickness is the same), the shim stiffness is 4 times bigger. 00 1098 Öhlins OEM Shock upgade 2007 410/D01 Integrated preload adjuster, Piston, Shim stack, Jet, Spring / Spring seat $699. 00 Öhlins OEM SHOCK UPGRADE SHOWA" A local suspension rebuilder says he needs this: "Increase low speed comp damping by x% and high speed by y%. Dirt Bike Suspension Setup. - Compression shims go under the piston (shaft side). Here's a quick take on the Bitubos vs. Shiver 750 (Showa) 2008-2011 105/A01 Adjustable cartridge kit $599. 2014 RS Revelation midvalve with reb. All the shims are measured in millimeters, and every shim in the shock has a 12mm ID (inside diameter) so for listing purposes I will not list this. The new 49mm Showa Twin Chamber Spring Forks offer a very versatile, stable and predictable feel to the front of the motorcycle. At TW Suspension Tech we take pride in providing you with high performance suspension Is there separate mid speed shim stack in the piston of the damper shaft? I think it is still overpriced product,basicly everything inside the fork/shock is just miniature copy from mx world Race Tech makes the Cartridge Emulator, which has a shim stack and spring just like in a cartridge fork. Free shipping . $129. I NEVER ride 5 Oct 2011 When the shock is compressed the oil forces the rebound shims at the end of the rod that leads to just below the compression valve stack. At higher speeds of shock movement the amount of oil being moved is more than the holes can cope with so the extra pressure that builds up forces the remainder of the oil through the shim stack. Is that possible with the showa or works shock, but I just don't recognize it? I'm wanting a shock that can handle the sharp bumps like concrete cracks and square edged bumps without pushing it thru to me. 2008 Dodge Sprinter Performance Suspension. 006" thick shims do not equal one . How To Rebuild Showa Twin Chamber 49mm Technical Edge Dirt Shock - Part 3 - Gold Valve racetechsuspension 27,348 views. At low speed the shim stack is barely cracked open resulting in high jet velocities, high flow losses and a high damping force. Depending on brand of shock (KYB, Showa As the shock compresses, oil is displaced by 14mm shaft. A mono tube shock just isn't all that complicated. shim stack but every rear shock I have opened has had a shim stack on the main piston for both compression It turns out that the shock is like any common Showa and easy to disassemble. Its largest shim is positioned behind the smallest diameter shim on the low speed stack. The rider is interviewed then a shim stack is custom built for rider's weight, ability and application. rebound Refine your search for honda cr480 shock. Part three of Race Tech's "Technical Edge - Dirt Shock Maintenance" video, with Race Tech owner Paul Thede. Note internal thread in the stock rod, as compared with the K-Tech rod with external thread. For high speed, you would need to drive the car with suspension travel indicators to get a feel for the damping. Maybe Showa These are then matched to a very basic shim stack which creates a damping curve for the given suspension component. The shim stack and spring weight were selected based on our rider weight, riding style, and ability. The Sachs fork and shock components supplied for off road, Enduro or MX machines are very well constructed with their own GE Race Tune - Hooke Rd, Elizabeth, South Australia, Australia 5113 - Rated 4. Simply fit and feel the ride The perfect, compliant and controlled road shock - built just for you, to your exact specification, from your suspension specialists, HPS Race Tech's original bolt-on fork valving system for cartridge forks. You can’t Title: valve_code. However, fluid is unable to exit through flowpath 28. No wonder the high speed damping feels so stiff. Dirt Bike. The most common shock valving configuration (standard valving), is a progressive shim stack, or pyramid shim stack made up of 5 to 10 shims of the same thickness and varying diameters stacked in order from largest to smallest. Unless they did something really stupid in designing the compression adjuster, then a GoldValve ought to sort out the vast majority of performance shortcomings (providing the shock has at lest a 44mm ID). MXA MOTOCROSS RACE TEST: 2018 HUSQVARNA FC450. This is a newly designed Shock Gold Valve Kit for the 46mm KYB and 50mm KYB, Showa and WP shocks which provide better control for the rider. Honest question: how many riders do you think are outside of specialized 240lb weight recommendation and in the market for such a high end bicycle? Click to expand 240? No idea. Flow losses are controlled by the stiffness of the shim stack on the shock absorber valve. au The GP10 unit is a fully adjustable shock absorber via a shim stack system, it has a spring measured to suit your rider weight and for what purpose the bike is used for. large pistons with heavy shim stacks 6) Wp Ktm Factory Edition 2015-1/2 + Shock and 2016-Sx, Xc ( these are different Length from previous so Ohlins TTx Shocks will be different from past versions ) They now use traditional 12mm valving shims like KYB /Showa designs. rate and IS in their database, can I use those shim stack specs for a baseline?Check Valve (KYB and Showa) Shock disassembly is required. The stock piston design has too much flow area which puts too much leverate on the shim stack. J. $74. the fork and/or shock cannot dampen correctly . The Gold Valve shim stack and piston is thinner than the Showa just went [to that configuration] last year; Kayaba's been doing it for about five years. 2006 rm250 forks feel soft You can't eyeball a shim stack and know the size and thickness of the shims. Shims are configured in various diameters and thickness to achieve specific results as a “shim stack”. motorcycle fork systems Recommended for KYB and SHOWA fork units There are several different mechanisms used to control damping. Also need shim stack information. 00 PCR StreetFighter 848 (Marzocchi43) 2012-2013 409/D05 Rebound Pistons $179. The compression stop washer acts as the foundation for shim spacers on certain shaft versions, and the rebound stop washer is used on the rebound side as a spacer for the shim stack. Here is a little F650 history lore for you from page 50-51 of the November issue of Motorcyclist magazine: The designer of the "Classic" F650 model was Martin Logmore, who is now the Chief Designer for Aprilia and has just redesigned the Aprilia Mille. and they have a recommended shim stack. of options (port size and flow rates) as well as valve shim stack configuration options, as well How to stiffen on soften a shim stack. The picture below shows a stock Showa cartridge fork compression Once we had the tubes it was time to start sorting out the modified shim stacks, made up of super thin washers, which come with the Race tech Gold Valve kits. Valve Shim Calculator Carburetor Suspension Services. To convert the compression stack from Showa to K-tech, you need to take the Showa scrapstack off the stack holder. Here our shock shaft tool to unscrew the shim stack in the stock shock absorbers KYB and Showa Designed by Lainer Suspension Racing Shock Revalve– $160. Suspension Direct in a vendor and manufacturer of suspension parts for Motocross and UTV Applications, selling brands such as WP, Showa, KYB, Walker Midvalves are basically a shimstack at the back of the rebound piston to What kind of forks and shocks are currently coming with midvalves?16 Sep 2013 I have my Showa shock torn down right now for service and wanted to re-valve it while I had it apart. Dirt Bikes 101 - Shock Basics, Maintenance, & Adjustment On Showa shocks this will leave a washer resting on the lower circlip. Ohlins Black Line Rear Shocks For Harley Touring. WP AER 48 fork FIRST LOOK large pistons with heavy shim stacks, and of course the appearance of an air spring in place of steel coil springs. So: Non-upside down CBR-600F4i forks with the right springs and internals and settings are better than the latest, off the shelf BPF forks. The Big Piston system inside the fork (and I think the 'Balance Free Rear Cushion' shock on the 1000RR) use a different internal layout to make the transition from compression to rebound smoother, when you are around the threshold. The sequence of the shim stack serves two functions. 7 mm, limited availability. Check the crossover gaps between the low and high speed stacks. 4″ of piston 22″. JPH mentioned opening up the ports in the stock piston as he didn't think it flowed enough oil. You need a lathe or similiar 3-jaw chuck to hold the shim stack holder or you´ll run a serious risk to deform it, rendering it useless. Suspension Adjustments Broken Down By Showa Engineer That Races Pro MX They are now selling shim stacks and modification kits for most rear shocks, and some fork King Shock Shims are made of thin and flexible heat treated stainless steel and are rated to withstand shock temperatures of over 600 degrees Fahrenheit while only losing 2% of their strength. 300 psi shock SHOWA forks have long been an excellent choice for motorcycle suspension, and recently SHOWA introduced the SHOWA SFF (Separate Function Fork) which makes more exact tuning of the front suspension on the 2011, 2012 & 2013 Kawasaki KX250F (and for 2013, the Suzuki RMZ250 & RMZ450's) a whole lot easier than previous models as the SHOWA SFF fork allows external adjustment of the front suspension SHOWA forks have long been an excellent choice for motorcycle suspension, and recently SHOWA introduced the SHOWA SFF (Separate Function Fork) which makes more exact tuning of the front suspension on the 2011, 2012 & 2013 Kawasaki KX250F (and for 2013, the Suzuki RMZ250 & RMZ450's) a whole lot easier than previous models as the SHOWA SFF fork allows external adjustment of the front suspension Have the highest performance *despite* the technology inside them, as long as it features a modern shim stack and cartridge layout. Subject: gold valve shock question Thu Dec 19, 2013 12:19 am Im getting ready to install race tech's gold valve in my wrr shock but they had a few problems getting my shim stack info. 02 kgs The shim stack on the top of the piston Ohlins Fork Cartridge Kits Ohlins 30mm NIX Cartridges there just isn't a finer shock made. Overall a massive day with the all new AER 48 Air fork. 20 shims to the rebound stack whilst removing the 25mm x 0. Spacing Shims must be larger in diameter than the smallest shim in the Suspension Adjustments Broken Down By Showa Engineer That Races Pro MX and that would be an American Showa engineer. Beta Riders Club Discussion Forum. However the valving is really strange. and of course the recommended shim stack that you will be building yourself. . 59. In the case of the 4CS fork, one pattern we noticed MISSING was low speed damping control. Spacer in place above shock cap / below valve body [IMG] [/IMG] to lower the rear end I made a 13mm thick spacer from Delrin that is installed in the rear shock-this will lower the seat aprox 40mm - I decided to take the shim stack off --the nut that holds the shim stack in place has the treads Staked --threads Bent-- The 2001 CR is a refined version of the 2000 model that has a wider base valve in the forks that allows wider range of adjustments than the 2000 model, and a superior shock with a better valve and refined shim stack. Since I had a spare "parts" donor ZX7 shock, (tried it but not happy), I played around a bit with the shim stack, ended up sticking with the stock ZX9 configuration. Works fork parts are available for KYB SSS, KYB PSF, Showa SFF, Showa SFF Air, WP Closed Cartridge (Bladder Fork), WP 4CS, and WP AER 48 forks. The 2011 GSX-R750 is the first Suzuki sportbike to feature Brembo monobloc calipers. At low speed the shim stack is barely cracked open resulting in high jet Oct 5, 2011 When the shock is compressed the oil forces the rebound shims at the end of the rod that leads to just below the compression valve stack. When building it up I removed 2 of the big shims from the stack and added float to the mid. 11:54. After spinning a few laps I realized that I did not feel comfortable with the settings given to us for the forks. Clearly if you revalve a Showa fork it will work better than when stock as you will be putting in Big port comps / rebound pistons & be changing the compression stack if these forks have them as well as the needles to compensate the extra flow of oil that the big pistons allow now & this will in turn give a much more compliant feel over bumps Dr Shox are a independent suspension service and tuning centre for MTB and Motorcycles in Essex, East Anglia, we also run Enduro Bootcamps a lighter shim stack Ross Maeda designed a revolutionary shock compression adjuster utilizing a sub-valve design rather a loaded gate valve. 22. It is night and day above its competitors in many ways but lacks the adjustment of the 3 air valve setup that the Showa TAC fork offers. 1 Preassembled mid-valve baseline shims stack. 00* For Motocross, Offroad, Trial, Hillclimb, Supermoto, and Street applications Motoworx utilizes Race Tech G3-LD Gold Valves. 99 We complementary disassemble your shock, clean all components, install a new valve shim stack that is tailored to your weight and riding style, refill the shock with new suspension fluid, and recharge the nitrogen bladder to the proper pressure. the stockers. On Showa shocks, the peening also retains the rebound adjuster hardware Jun 28, 2006 The fork springs are . Check if this part fits your vehicle. Custom Shim Kits or quantity discounts available upon request, call for quote. Big-Piston Integral Pressurised Gas-Monotube Rear Shock Absorber for Honda Motorcycles A number of places, including RaceTech can re-valve the shock according to your weight and type of use for $125-$175 or more. Involves the stack of discs on the damper rod. Rebound Shim Stack KYB and Showa Shock Service disassemble the stack and look for burrs or dirt on the base valve or shims. one is to determine when the The picture below shows a stock Showa cartridge fork compression valve so that the shock isn't ramping up like crazy regardless of high speed damping, 24 Feb 2017 Hi all, I hope you can help me with my Showa shock from a Honda CR250 2002; The shock was not working properly, little hydraulic effect even 27 Nov 2003 Thanks alot, I've never actually take apart a showa fork, what do you mean shim stack on the bleed? Is there anywhere online I can look at a 1 Aug 201113 Mar 2009 I'm rebuilding a Showa shock, and I've got some questions. 359. These I just bought 15 04/05 GSXR 600/750 rear showa shocks. All new ‘Showa BFRC Shock’ Please ensure at time of checkout to leave notes on your shim stack settings if purchasing the full kit or the Balance shaft kit The new shock body was downsized from 50mm to 46mm, which reduces fluid volume and could contribute to heat buildup and fade. every thing worked out but the tech that did my rebuild had to call them and they had to give him different shim stack info, lucky all the shims that came with the dirt bike kit also work with what i needed as long as they were stacked differently. was founded in 2002 by Jason Enders and Butch Enders as a company dedicated to offering the latest technology in racing suspension. In actuality, the high speed stack is the entire stack, but the cross over shim causes a separation that allows customiztion of performance in the slower speeds of suspension travel. 2018 Suzuki RM-Z450 Review | Motorcycle Test A Showa BFRC (Balance Free Rear Cushion) shock is featured on the rear with a traditional piston/shim stack set-up. Rebound Clamping Shim Hi-Speed Rebound Stack Lo Off-road motorcycle suspension tuning and simplified valving diagnostics THIS WEBSITE HAS VERY HARD TO FIND VALVING INFORMATION!!! Ever wondered how to make your bike handle properly? 2003 Suzuki RM 125 fork and shock shim stacks. The right springs and valving is the start to a good setup, but after that to achieve something great you need fork parts like these. 00 Öhlins OEM SHOCK Andreani Group USA Shims are used to restrict oil flowing through the holes or ports in a piston. lainersuspension. Specific problem areas of later-model sealed-cartridge Kayaba and Showa forks are included as well. 2 12 . Shim ReStackor, Finally software to tune a shim stack Shim ReStackor example calculation retuning a shim stack to be three clicks softer That's not to say in any way that the Ohlins components are 'wasted'; Ohlins materials and tolerances provide consistency in damping performance Showa/Kayaba/etc do not. 2007 Honda CBR600RR Jeff Allen We do have one complaint, although we have to admit that it wasn’t obvious until a week later when we sampled the new Kawasaki ZX-6R at the same track. Most of the Showa stuff uses a 6 mm ID. The most common configuration is a pyramid style stack made up of progressively smaller diameter shims which offers excellent damping at all speeds. Kit includes: 1 dust seal, 1 oil seal, and 1 seal-head o-ring. The Race Tech G2R Fork Gold Valve Kit was as good as I had hoped it would be. A sub-valve design modulates pressure through an additional shim stack and valve, allowing for damping coefficient to be increased or decreased in a more linear way reducing the on or off feel of a traditional design. Product Feature: Race Tech Gold Valves. KYB and Showa used the same basic fork and shock configuration for all models. Does anyone know what weight suspension oil is recommended ( or standard ) for these shocks ( Showa 0292 B ) Thanks in advance ! The overall shock design shares similarities with popular KYB, Showa, and WP shocks. I know I can get a GSXR shock for the rear and bolt that on, but what can I do for the front suspension. RE Suspension, Inc. SHOCK GOLD VALVE INSTALLATION The pressed-on type (typical Showa and KYB) must be tapped off with a Rebound Clamping Shim Hi-Speed Rebound Stack Lo-Speed Once you have the Shock apart – you have to remove the peening again! Do this and then lay out your shim stack as per below. 4kg and this is a base starting point for me but Once you have the shim stack reorderedtransfer it back onto the base valve and I've never seen a Showa configured like that. Inspection of all parts for wear or damage beyond tolerances. Just how good Even more notable was the fuss Honda and Showa stirred up with their G-Cross World Cup team. The shim plate is a steel spacer or top out plate that serves as the start or end of a valve stack. He showed me that on the 04 and 05 GSXR 600 and 750 come with a Showa rear shock that will fit my bike and it is a better rear shock because of how they made the compression adjuster is made it has a shim stack and tapped needle instead of a blow off valve like the KYB has. 50/50 Belray 10wt/5wt oil with a bit of MoS2 powder added. Each Kit includes a complete set of shims to Valve the shock. or valve stack changes Set it inside the shim and measure the entire stack, then subtract the tool thickness to get the thickness of your shim. But the conversation and concepts are the similar and should cross over to the WP forks/shock. After taking the Showa BFRC shock apart and reviewing the design SHOWA SHOCK REBUILD. You search Auto repair manual PDF showa twin chamber fork shim stack, if there are search results will appear below. With the help of my owners manual and Race Tech's Gold Vavle Kit, my forks are more fluid and the shims now keep the forks up more in the corners. For low speed damping, I would need to push on the car to feel for resistance. Shim Stack & Piston Operation & Design On the shock servicing course students learn New Suspension School Website Launched