BIG BORE KITS for YZ 400 and 426

1 reply to this topic
  • MaxF1

Posted April 21, 2002 - 10:29 AM


YZ459 OR 500 BIG BORE KITS. Where can one buy them and who can fit them. Are there any downsides. Max

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  • Hootna

Posted April 22, 2002 - 03:36 AM



Check out Forward Motion, he can either sell you a whole cylinder or big bore your stock cylinder. Eric Gorr does awesome work and he is very cheap. He only charges like $350 for the Big Bore and this includes the Piston / Rings / Gaskets. I havent used him for my thumper but I used him for my CR125.

He advertises on where there are many posts from members about his services. Hope this helps you out.

Good Luck!!

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