Piston choice for 2009 YZ450F

what would you guy's suggest as a replacement? OEM or aftermarket (brand)? i already have the case split to repair the 5th gear issue i have. so while i have it apart, i want to replace the piston and rings.


Unless you are racing and you're losing races only because of a lack of 1 horsepower, OEM is less expensive and more reliable.

athena. I recently purchased one off ebay for 42 dollars including shipping brand new. complete with rings, circlips and wrist pin. I have seen more on there. Its 13.6 to 1. cant beat it.

oh and forged.

oh and forged.

OEM YZF pistons are also forged.

i ordered everything i'll need to put my 09 back together. i went with what was suggested for the piston,...Yamaha OEM.

should have all the OEM parts by the end of the month.

thanks guy's!

Edited by stroker101

anywhere you can buy the oem as a kit?

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