Wiseco SK1338 Ski-Doo REV 600 H.O. 2-Stroke Forged Piston Kit 72.00mm Standard Bore

The Wiseco SK1338 is a high-performance forged 2-stroke piston kit engineered specifically for the Ski-Doo REV 600 H.O. snowmobile platform. Designed for the 593cc engine, this kit features a 72.00mm standard bore with a 73.00mm stroke across two cylinders, delivering the precision fit and durability required for demanding snocross and cross-country riding conditions.

Wiseco pistons are forged from high-silicon aerospace-grade aluminum alloy, a process that compresses the material's molecular structure, increases aluminum density, and aligns the grain flow of the alloy. The result is a piston with superior resistance to impact and fatigue compared to conventional cast alternatives — critical in high-compression, high-RPM two-stroke applications where component stress is extreme.

Why Forged Over Cast?

• Higher mechanical strength — condensed, aligned grain structure resists deformation under load
• Impact and fatigue resistance — withstands the repeated stress cycles of aggressive trail and race use
• Optimized strength-to-weight ratio — each forging is designed to minimize mass without sacrificing durability
• Skirt coating included — reduces friction and wear during break-in and beyond

Kit Contents:

• Forged piston(s) — enough for one complete engine rebuild (2 cylinders)
• Semi-keystone piston ring(s) — part number 2834KA
• Wrist pin — S631 (20 x 60.0mm, non-chromed)
• Round wire pin locks — CW20 (20mm)

Every Wiseco piston is developed, forged, and finished entirely in the USA — including all forge tooling — giving Wiseco complete control over the manufacturing process from raw bar stock to finished, skirt-coated parts. In-house dyno testing supports continuous R&D into piston geometry, coatings, and component design. Note: Wiseco pistons must be used exclusively with Wiseco rings — ring types are not interchangeable with other brands or configurations.