Product PWC / Jet SkiPiston kit Back 13001-3731 Piston-0.5 For Kawasaki Ultra 900 Item Number: 13001-3731 Description: Piston-0.5 You May Also Be Interested In 12110-91B03 Piston-0.75 For Tiger Shark 900 290-886-270 Piston-0.75 For Seadoo 580/587 3G4-87121-0 Gasket Kit For Tohatsu/Nissan 16776-48A Cylinder Base Gasket For Harley-Davidson