Product PWC / Jet SkiPiston kit Back 12110-98E51 Piston-0.5 For Tiger Shark 640 Item Number: 12110-98E51 Description: Piston-0.5 You May Also Be Interested In 13001-3722-04 Piston-1.0 For Kawasaki 750 12110-98E51 Piston-1.0For Tiger Shark 640 92990-18200-00 Washer For Yamaha 3T5-87121-6 Powerhead Gasket Kit For Nissan/ Tohatsu