Wiseco 722M06970 2-Stroke Piston Kit 69.70mm Bore Polaris SLX XPS 785 2746CD

The Wiseco 722M06970 is a forged 2-stroke piston kit designed for the Polaris SLX and XPS 785cc personal watercraft engine with a 69.70mm (2746CD) standard bore. Engineered, forged, and machined in the USA at Wiseco's facility in Mentor, OH, this piston kit delivers the strength, reliability, and performance that Wiseco has been known for since 1941.

Key Features:

• Forged High-Silicon Aluminum Construction: Forged from high-silicon, low-expansion aluminum alloy for superior tensile strength, reduced weight, improved heat transfer, and extended service life compared to cast alternatives
• USA Engineered & Manufactured: Designed and built specifically for this 2-stroke powersports engine application using the latest 3D design techniques and finite element modeling software
• CNC Diamond-Turned Finish: Precision CNC machining guarantees a perfect surface finish with zero size variation, ensuring proper fit and consistent performance
• Optimized Strength-to-Weight Ratio: Dedicated forgings and additional lightening operations deliver the ideal balance of durability and reduced reciprocating mass
• Universal Cylinder Compatibility: Compatible with cast iron, chrome, Nikasil, and boron composite cylinder bore compositions
• Oversize Options Available: Wiseco's oversize piston range extends the service life of cast iron lined cylinders; chrome, Nikasil, and boron composite cylinders can be re-sleeved to accept oversize pistons
• Complete Kit Includes: High-performance forged piston, piston ring(s), wrist pin(s), and circlips — everything needed for a proper 2-stroke top-end rebuild

This piston kit is part of Wiseco's classic 2-stroke PWC lineup, purpose-built for the Polaris 785cc engine. Note: Wiseco ring types are not interchangeable between models (e.g., CD rings are not interchangeable with LC rings) and are designed to fit Wiseco pistons only. Oversize pistons require cylinder boring.