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 Cylinder sleeve 496-44108-00 Cylinder sleeve 496-44111Z-00 Key, Woodruff 90280-05013 Screw - Exhaust Plate 10-28668 / 28668