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 13001-3731 Piston-1.0 For Kawasaki Ultra 900 12110-91B61 Piston-STD For Tiger Shark 1000 663-45375-00 Seal For Yamaha 810404 Top End Gasket Kit For Kawasaki