The PROX Complete Top End Rebuild Kit provides precision-engineered performance for Pistons, Cylinders & Top End applications. *OEM Specification:* Piston Kit with Gaskets - Ski-Doo. Key Specifications & Features - Cooling System: Liquid Cooled - Type: Dual Ring - Engine Type: 2-Stroke - Units: Kit - Piston Material: Hypereutectic Alloy - Riding Style: Snow - Style: Top End - Product Name: Rebuild Kit - Bore Size: 72.00 mm - Displacement: 593 cc - Skirt Coating: Molybdenum Disulphite - Available Configurations: PISTON KIT TOP END CAST 593HO MXZ600, PISTON KIT TOP END CAST BRP 600HO ETEC, PISTON KIT TOP END CAST POLARIS 600 CFI 07-08, PISTON KIT TOP END CAST POALRIS 600 CFI 09-15, PISTON KIT TOP END CAST BRP MXZ 800, PISTON KIT TOP END CAST BRP 800R PTEK, PISTON KIT TOP END CAST 800 CFI 11-12, PISTON KIT TOP END CAST POLARIS 800 CFI (+2 more options) Technical & Installation Notes - Includes: - • 2x Piston Kits - • 1x Top-End Gasket Kit