Product JET SKIPiston Back Piston-1.0 66E- YAMAHA 800 Brand: OSAKA MARINE Description: YAMAHA 800_Piston-1.0_66E- Bore-0.80 W/WASHER You May Also Be Interested In Piston-STD 61X/62T YAMAHA 701/1100 Piston-0.5 POLARIS GENESIS 1200 09-811 Piston Piston-1.0 POLARIS 750