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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Changes to make from progressive to straight??
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[QUOTE="marcusgunby, post: 120799, member: 17066"] kawi glad to hear your trying the straight rates.It sounds odd that you are bottoming so hard on your present set up as those 250 springs should stop that.yours is a 99 KX i seem to remember- i wonder if any wear is causing bottoming.wear will cause the oil to bypass the shock/fork pistons so they will not have the bottoming control they should.You can have wear on the shock body and shock piston ring.Make sure on shock/forks that the shims sit flat on the face of the pistons-surface them if not.On the forks ensure the midvalve shims are not warped(very common).Make sure the O ring on the base vave(fork) is in good condition as well.Look for wear on the midvalve piston ring as well.The springs should fit your weight for SX.I have 0.415 front 4.7 rear on my CR but i weigh more and dont ride SX(so it cancells out).I would start at the same proload/oil levels as too many changes are not good.You could try mobil 1 atf(slightly thicker than a 5wt) as it might suit you.On the shock i would run 175psi.Hope this helps and good luck. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Changes to make from progressive to straight??
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