Product JET SKIPiston Back Piston-0.5 YAMAHA 500 Brand: OSAKA MARINE Description: YAMAHA 500_Piston-0.5 Bore-0.72 You May Also Be Interested In Piston-0.5 KAWASAKI 4-Stroke STX 15F Piston-0.5 HONDA TURBO 09-710027A Gasket Set 35-809099 Fuel Filter For Mercury