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Showing results for tags '07 ktm 450 exc'.
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SoCalMule posted a topic in EngineHey guys, I am making a list of recommended updates and things to replace/check on my 07 KTM RFS 450 exc and would appreciate anyones ideas. My bike has 355 hours on the original internals. I going to complete a full engine overhaul. Here is some of the things I am planning to do: Freshen the top end, piston, rings, machine the cylinder, work with the head; install stainless steel exhaust valves, replace the chain, the guide, I have heard some people recommend installing aftermarket guides... not too sure why on this. What aftermarket guides are recommended? I'm going to replace the crank bearings and both connecting-rod end bearings. Are there better types of "crank bearings" then OEM? I remember someone saying use roller (ball) bearings vs needle bearings? I'm fuzzy on this. I'm going to replace the counter shaft bearings since they have over 9k miles on them, and there seems to be a little play. I figure since this is major surgery, that I should get an idea as to everyones experience so I don't miss anything. Thanks! Mark