426 Top End Work

Have a 2001 YZ 426. Have cylinder and head off, long story. :)

Thinking about bore and port and polish?

Can I get oversized pistons for this yet? Any other mods that really help?

Since it's apart...

[ August 03, 2002: Message edited by: Crash19 ]

I recently had a bent valve repaired by Moto-tech in New Hampshire. While it was there, I asked about porting/polishing. Their honest answer was "don't waste your money". I am sure strictly speaking there would be some minor (but maybe not noticeable)improvement but for the money there are better mods.

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