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Canadian Daves JustKDX
Need .40 springs???
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[QUOTE="Matt90GT, post: 391714, member: 30871"] A few things here on the Xr400/600 springs. Those forks first off are 43mm units. So you have to have 43mm forks to install those springs (86-92, 95+ 200 or the 91-94 kdx250). Honda has varrying rates on these springs through the years. Here is a breakdown on the specs: Xr600 93-00 : .41 Xr600 85-92 : .42 Xr650L 93-02: .44 Xr400 00-02 : .41 Xr400 96-99 : .38 Now if you buy aftermarket springs for the honda forks, you have to use spacers since the aftermarket springs are shorter. I ended up bottoming the forks on the spacer on the xr600 with the .45 eibach and a spacer. I solved the problem by stacking a valve spring from a 302 Ford motor on the top of the eibach spring. It came out just about right on spring rate and kept from bottoming on the spacer. Now if you have the older KDX200s like the 93-94s with the 41mm forks, you can use the springs from the Xr250s. Same diameter forks. Xr250 96-02 : .35 Xr250 90-94 : .40 Xr250 86-89 : .38 So you can find springs out there from other bikes. Just make sure the forks are the same diameter there. If the spring is to long, you can either cut or take out the spacer or you can cut the spring down but that will change the rate slightly. Where to find springs? Check any of the 4 stroke or XR boards. Ebay is good also. I am sure many XR pilots have them in their garage since most of the XRs are undersprung stock. [url]http://www.justxr.com[/url] [url]http://www.hondaxr.com[/url] [url]http://www.thumpertalk.com[/url] All good places. Hope that helps some. Also most MX bike from about 86/87-90/91 had 38mm forks. The CRs did from 86-88 and has a .36 or .38 spring in them. The White Brothers Catalog has a lot of info on the spring rates there: [url]http://www.whitebros.com[/url] Just check their offroad catalog. Then use the Racetech site to reference the size of the fork for the bike. Works pretty well using both sites. [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Need .40 springs???
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