Wiseco Pistons PK1104 51.50mm 2-Stroke ATV Piston Kit with Top-End Gasket Kit

The Wiseco PK1104 is a complete 2-stroke piston kit engineered for high-performance ATV applications requiring a 51.50mm bore size (1.00mm oversize). This kit includes a forged aluminum piston, rings, wrist pin, circlips, and a complete top-end gasket set for a comprehensive rebuild solution.

Key Features:

• Forged in-house construction for superior strength and durability compared to cast pistons
• 51.50mm bore diameter (1.00mm oversized from stock 50.50mm)
• 19mm wrist pin diameter for secure piston-to-rod connection
• Optimized grain structure aligned to piston features for maximum impact and fatigue resistance
• Advanced skirt coating reduces friction and wear during operation
• Engineered strength-to-weight ratio maximizes performance without sacrificing reliability
• Complete top-end gasket kit included for hassle-free installation

Wiseco's forging process creates a condensed grain structure that delivers higher mechanical properties than cast alternatives, making these pistons ideal for demanding motorsport conditions. Compatible with Polaris 400cc 2-stroke ATVs including Scrambler 400, Sport 400, Trail Blazer 400, and Xplorer 400 models from 1994-2003.