Product PWC / Jet SkiPiston Back 12110-98E51 Piston-STD For Tiger Shark 640 Item Number: 12110-98E51 Description: Piston-STD You May Also Be Interested In 12110-98E51 Piston-1.0For Tiger Shark 640 290-887-670 Piston-0.25 For Seadoo 720 P400270850013 Complete Gasket Kit For KTM 297275 / 495602 Gasket Kit For Briggs & Stratton