Member 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 290-887-570-01 Piston Kit 0.25 For Seadoo 951 13001-3722-03 Piston-0.75 For Kawasaki 750 810445 Top End Gasket Kit For Kawasaki 74540-01 Regulator/Rectifier For Harley Davidson