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

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • 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!!

Related Content


Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.