Product PWC / Jet SkiPiston kit Back 12110-98E51 Piston-0.25 For Tiger Shark 640 Item Number: 12110-98E51 Description: Piston-0.25 You May Also Be Interested In 12110-91B03 Piston-0.75 For Tiger Shark 900 6M6-11631-00 Piston Kit STD For Yamaha 810335 Top End Gasket Kit For KTM 63P-45571-02-00 Drive Gear For Yamaha