Product Jet SkiPiston Back 290-887-570 Piston-0.25 For Seadoo 951 Item Number: 290-887-570 Description: Piston-0.25 You May Also Be Interested In 290-887-670 Piston Kit STD For Sea Doo 290-887-060 Piston-0.75 For Seadoo 657 69D-W0078-00-00 Water Pump Repair Kit For Yamaha 09-711256 Full Set Gasket W/Oil Seals For Ski-Doo