Wiseco S551 Lightweight Chromed Wrist Pin for 4-Stroke Dirt Bike

The Wiseco S551 is a lightweight, chrome-plated wrist pin engineered specifically for 4-stroke dirt bike applications. Wiseco wrist pins are precision-manufactured to tight tolerances, delivering a reliable piston-to-rod connection that can withstand the demanding conditions of off-road and motocross riding.

Key Features:

• Chrome-plated wrist pin for enhanced hardness and wear resistance
• Lightweight design reduces reciprocating mass for improved engine response
• 4-stroke use only — engineered for 4-cycle dirt bike engines
• Dimensions: 23mm OD x 50.85mm length
• Precision-ground to OEM-quality tolerances for consistent fit

Wiseco has been a trusted name in performance piston and piston component manufacturing for decades. The S551 wrist pin is designed as a direct replacement or upgrade component for compatible Wiseco or OEM piston assemblies, making it an ideal choice for engine rebuilds and performance builds alike.