
Winter$15.93
EPI PERFORMANCESKU 20-15W
13 SPLINE TOP GEAR 15 WIDE X 20TOOTHFinal Drive (chains / sprockets / belts)





VERTEX
Out of stock · stock as of Sep 3, 2026
Shipping calculated at checkout
30-day returns on unused parts
Vertex Top End Piston Kit One part number includes everything for a top end rebuild Includes Vertex piston, rings, wrist, pin, circlips, and top end gasket kit Exact fit A, B, or C pistons match your cylinder bore perfectly to maximize power and performance 2-stroke applications include wrist pin bearing 4-stroke applications include Hot Cams cam chain for a more complete rebuild Uses Vertex #22915A Compression Ratio12.5:1 Cylinder Diameter95mm Displacement450cc Piston Diameter94.930mm Fits Yamaha YZ450F (03-05)



