Wiseco SK1353 2-Stroke Forged Piston Kit for Polaris Snowmobile 82.00mm 1mm OS

The Wiseco SK1353 is a high-performance forged 2-stroke piston kit engineered specifically for Polaris snowmobiles. Featuring an 82.00mm bore (1.00mm oversize) and forged from a high-silicon aluminum alloy, this kit delivers the strength, durability, and reliability demanded by snocross and cross-country racing applications.

Wiseco is the only aftermarket piston manufacturer in the United States that produces pistons exclusively through the forging process. All pistons and forge tooling are manufactured in-house at their Mentor, Ohio facility, giving Wiseco complete control over every stage of production — from raw aluminum bar stock through final skirt coating. This vertical integration, combined with in-house dyno testing and 3D finite element modeling, allows Wiseco engineers to optimize each piston design for maximum strength-to-weight ratio and application-specific performance.

Why Forged vs. Cast?

Unlike cast pistons, which are brittle and prone to catastrophic failure when material yield strength is exceeded, forged pistons feature a tightly condensed grain structure aligned to the contours of the part. This produces superior mechanical properties including higher impact resistance, fatigue resistance, and overall durability — critical qualities for high-compression, high-RPM 2-stroke snowmobile engines.

Kit Features:

• Bore Size: 82.00mm (1.00mm oversize)
• Forged from high-silicon aluminum alloy for maximum strength and dependability
• Includes forged piston, rings, wrist pin, and circlips
• Skirt coating applied for reduced friction and improved break-in
• Engineered, forged, and machined in the USA
• Developed through in-house dyno testing and rigorous R&D
• Optimized strength-to-weight ratio for high-performance snowmobile applications

Whether rebuilding a trail sled or refreshing a race-prepped machine, the Wiseco SK1353 piston kit provides a direct, high-quality replacement engineered to outperform OEM specifications.