Seller notes

Wiseco Piston Kit Fits:Yamaha Yamaha 1990-2000 YFM 250 Timberwolf* 2000-2004 YFB 250 Bear Tracker* 2005-2006 YFM 250 Bruin* 2007-2009 YFM 250 Big Bear**Fits 72.00mm cylinder bore *PLEASE MEASURE YOUR CYLINDER BORE BEFORE ORDERING Wiseco produces high quality American made FORGED pistons, that stand upto the test of extreme racing conditions. Every Wiseco product is engineered with the most advanced technologies, for the ultimate performance and durability in all forms of PowerSports! Questions?P...

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