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YZ 125 Rebuild

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Just finished my first summer of racing on an 06 YZ 125. Had a blast and am looking forward to next year! Wondering if a motor rebuild is necessary. Currently have 150 psi of cylinder compression. Is that acceptable? Also, when should engine bearings be replaced?

Thanks in advance.

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150psi isnt bad at all for a 125. But if your puting it away for the winter then i would throw a top end in just for insurance and also so its fresh for the spring:banana:

But thats all up to you, but i would do that just for the insurance.:lol:

As for engine bearings, how many hours are on the bike? And i that depends if your crank, or transmission has any play in it or not. But if everything is tight then i wouldnt worry about it. I've seen guys go over 200hrs+ on cranks. Or even top ends!!!

Only way your gona find if you need bearings or not is you got to open her up and see whats inside

thanks man and god bless

Alex

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