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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Too much power???
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[QUOTE="Robcolo, post: 694693, member: 28062"] There are definately negative effects. If you ride tight, slippery, rocky, steep trails the stock engine is far more user friendly. I've "hopped" mine up and now like an MX engine it's practically unrideable in the really nasty stuff. [Sure is great in the desert though] So now I'm having to add a [$100] flywheel weight just to tame it back down a bit. You WILL have to replace the piston. Many threads on here have related to exploded 220 pistons - some even before altering the engine. Wiseco is about the only choice I know of. Cast pistons are just fine - it's the quality of the casting that's the problem with the KDX -lousy. The clutch will also slip with your new found power -and it makes a terrible noise. There are heavier weight springs available and past threads have listed those part numbers. You didn't mention suspension though. Once you get a KDX going over 30 mph the suspension is totally inadequate and it WILL hurt you. They understeer, they oversteer, and the front forks become terribly harsh. You'll need to revalve and respring the front end to get a comfortable and predictable ride. Stiffer front springs are an absolute must if you ever plan on going past 3rd gear. [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Too much power???
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