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I have a yamaha ttr125 and I want toget big bore kit for it.Should I bore it out to a 150 or 170.If I did would it beat a crf150.Thanks

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I have a FMFpipe and a uni airfliter if I bore it to 150cc do you think I can beat a crf150 in a 800ft drag.thanks

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if u go with anything bigger than a 150 kit you WILL have to split your case. you will also have to get your case machined.

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open airbox, rejet and fmf pipe.. should be pretty close to the crf. big bore kit on top of it should make it faster than the crf. make sure you get the cam with the big bore kit to make it breathe. the first choice is a cheap way to be real close to the crf.

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