Wiseco 466M06750 2-Stroke Forged Piston Kit 67.50mm Bore

The Wiseco 466M06750 is a high-performance forged piston kit designed for the Honda CR250R (1981–1983) 2-stroke engine. With a 67.50mm bore diameter (+1.50mm oversize) and compression distance code 2658CD, this kit is engineered for riders who need reliable oversize replacement options after cylinder reconditioning.

Key Features:

• Forged high-silicon aluminum alloy construction delivers superior strength, reduced weight, improved heat transfer, and extended service life compared to cast alternatives
• Dedicated forging design optimizes the strength-to-weight ratio for maximum horsepower and torque output
• Diamond-turned CNC finish ensures precise sizing with no variation, compatible with cast iron, chrome, Nikasil, and boron composite cylinder bores
• Oversize piston (+1.50mm) — cylinder sleeving or boring is required prior to installation
• Complete kit includes forged piston, ring(s), wrist pin, and circlips
• Engineered, forged, and machined in the USA at Wiseco's facility in Mentor, OH

Wiseco's legacy in 2-stroke piston manufacturing spans over 80 years, making them the trusted choice for both recreational riders and competitive racers across motocross, trail riding, and vintage applications.