Wiseco Pro-Lite Piston Kit | Honda CR125R (2005–2007) 859M05400

Maximize the performance and reliability of your Honda with the Wiseco 859M05400 Piston Kit. Part of the renowned Pro-Lite Series, this kit is CNC-machined to an optimal cam shape and profile, ensuring your engine delivers peak horsepower and a long service life.

Product Overview

Specifically engineered for the 2005–2007 Honda CR125R, this forged piston is crafted from a high-silicon aluminum alloy. This material choice offers superior strength and expanded heat resistance compared to cast pistons, making it the ideal choice for high-revving 2-stroke racing applications.

Key Features:

• Forged Strength: High-silicon aluminum alloy provides maximum durability and consistent performance under extreme temperatures.

• Precision Engineering: CNC-machined for a perfect fit and optimized profile to reduce friction and improve throttle response.

• Pro-Lite Series: Designed to be lightweight without sacrificing structural integrity, allowing for faster acceleration.

• Standard Bore: Specifically sized at 54.00mm to match OEM specifications for a direct-replacement fit.

Technical Specifications:

• Bore Diameter: 54.00mm (Standard Bore)

• Stroke: 54.50mm

• Displacement: 125cc

• Part Number: 859M05400

Kit Includes:

• 1x Forged Pro-Lite Piston

• High-Performance Ring Set (2126CS)

• Wrist Pin (S632 - 15mm x 47mm)

• Round Wire Circlips (CW15)

Important Note: This kit is intended for the Standard Bore size. If your cylinder has been bored over or requires an oversize piston, a different part number will be required.