Product Jet SkiPiston Back 12110-98E51 Piston-0.5 For Tiger Shark 640 Item Number: 12110-98E51 Description: Piston-0.5 You May Also Be Interested In 12110-91B61 Piston-1.0 For Tiger Shark 1000 290-886-270 Piston-0.25 For Seadoo 580/587 09-712291 Top End Gasket Kit For Polaris 27358-76 Bowl O-ring For Harley Davidson