Product PWC / Jet SkiPiston kit Back 290-887-300 Piston-0.5 For Seadoo 787 Item Number: 290-887-300 Description: Piston-0.5 You May Also Be Interested In 290-887-060 Piston-0.75 For Seadoo 657 13001-3719-04 Piston-1.0 For Kawasaki 750BP 227-23501-07 Piston Ring For Robin 3KJ-11631-00 Piston For Yamaha