Wiseco 339M05750 Forged Piston Kit 57.50mm 2-Stroke Motorsport

The Wiseco 339M05750 is a forged piston kit designed for high-performance 2-stroke applications. Wiseco forges this piston from high-silicon, low-expansion aluminum alloy, delivering superior strength, reduced reciprocating weight, improved heat transfer, and extended service life compared to cast alternatives.

Key Features:

• Forged Aluminum Construction: High-silicon, low-expansion alloy provides outstanding durability and thermal stability under demanding racing and recreational conditions.
• Diamond-Turned CNC Finish: Each piston is precision-machined on CNC turning centers for a consistent diameter with zero size variation, ensuring a proper fit every time.
• Universal Cylinder Compatibility: Engineered to install confidently in cast iron, chrome, Nikasil, and boron composite cylinder bore compositions.
• Oversize Availability: Part of Wiseco's broad range of oversize pistons, extending the service life of cast iron lined cylinders; oversized cylinders can also be re-sleeved to accept Wiseco oversize pistons.
• 57.50mm Bore Diameter: Precisely sized to the M05750 specification for accurate fitment and optimal compression seal.
• Complete Kit Included: Each kit includes the forged piston, rings, wrist pin, and circlips — everything needed for a complete piston replacement.

Wiseco part number 339M05750 is manufactured at Wiseco's state-of-the-art facility and is built to meet the demands of both competitive racers and recreational riders. The included wrist pin, rings, and circlips make this a true drop-in kit for a straightforward rebuild.