- Big Bore Kit
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06-09 YZ450F YZ 450F 98mm CP 13.51 Piston 480cc Big Bore Cylinder Top End Kit
Brand New Complete 98mm 480cc Big Bore Top End Rebuild Kit. Fits Yamaha YZ450F Dirt Bikes.
Years 2006 2007 2008 2009 ONLY. Add reliable power at an affordable cost! Everything is new in the original packaging. This Big Bore Kit Includes. 98mm Athena Big Bore Cylinder.
Larger Water Jackets For Superior Cooling! CP 13.5:1 Piston Kit (Includes Piston, Rings, Pin & Clips). Complete Top End Gasket Kit.