Wiseco Pistons PK1520 Top End Piston Kit for Polaris ATV - 76.5mm 300

The Wiseco PK1520 is a complete top end kit designed for 1994–2000 Polaris 300 ATV engines. Featuring a 76.5mm (721M) bore, this kit provides everything needed for a thorough top end rebuild or overbore, ensuring your engine returns to peak performance with OEM-exceeding quality components.

Wiseco is a trusted name in high-performance forged pistons, and the PK1520 is engineered to deliver superior strength, heat resistance, and long-lasting durability over stock cast alternatives. The forged construction improves tensile strength and reduces the risk of detonation damage under demanding riding conditions.

Kit Includes:

• Forged piston – precision-machined to 76.5mm bore diameter
• Piston rings – properly gapped for optimal compression and seal
• Wrist pin – hardened for durability under load
• Circlips – retains wrist pin securely during operation
• Top end gasket set – provides a complete, leak-free seal for the cylinder head and base

Designed as a direct-fit solution for the Polaris 300 ATV platform, the PK1520 simplifies the rebuild process by consolidating all critical top end components into one convenient kit. Whether you're restoring a worn engine or upgrading to a larger bore, Wiseco's PK1520 delivers the quality and reliability that professional mechanics and enthusiasts depend on.