Products PWC- Sea Doo951 CC Back Piston 290-887-951DI Type: STD +0.25 +0.50 +0.75 +1.00 Sea Doo 951 DI Piston Item number: 290-887-951DI Bore 88 mm Fit on models: All Sea doo 951 DI You May Also Be Interested In Complete Gasket Kit PWSE-951CS-FU Piston 290-887-570 Piston Kit 09-808-02 O-Ring 420-430-775 / 430775