This Prox replacement dual ring rebuild kit is designed for the specific Polaris applications listed below. Engineered with high-precision tooling to meet or exceed original factory tolerances.

Key Features

• Engineered with high-precision tooling to meet or exceed original factory tolerances.
• Features a full Molybdenum Disulfide (MoS2) skirt coating to ensure smooth engine break-in and prevent piston scuffing.
• Hard-anodized piston crown/dome protects the structure against excessive combustion heat and high detonation.
• Hard-anodized top ring grooves virtually eliminate ring micro-welding in extreme conditions.
• Outfitted with premium Japanese Riken rings for optimal heat transfer and precise oil ring sealing across cast iron, Nikasil, or composite bores.
• Piston kit includes the pistons, premium rings, heavy-duty wrist pins, circlips, and the small-end wrist pin needle bearing.
• Gaskets includes complete premium top-end gasket kit mirroring original equipment layouts for an airtight seal.