Wiseco GP Series Single Ring Piston Kit | Honda CR125R (2004–2007) 841M05400

Upgrade your Honda’s top end with the precision-engineered Wiseco 841M05400 Piston Kit. Designed specifically for the 2004–2007 Honda CR125R, this GP Series kit features a high-performance single-ring design to reduce friction, maximize RPM potential, and deliver crisp throttle response for competitive racing applications.

Key Features:

• Forged Performance: Manufactured from high-silicon aluminum alloy for maximum strength and dependable performance under extreme racing conditions.

• GP Single Ring Design: Engineered to reduce drag and heat, allowing the engine to rev faster and more freely compared to dual-ring setups.

• Standard Bore: Precision-machined to 54.00mm to maintain OEM specifications while providing superior durability.

• Complete Kit: Includes the piston, high-quality ring, wrist pin, and circlips—everything you need for a professional top-end rebuild.

• Electra-Coat Finish: Features a coated dome and ring grooves to improve surface hardness and assist with heat dissipation.

Technical Specifications:

• Bore Size: 54.00mm (Standard)

• Compatibility: Honda CR125R (Model years 2004, 2005, 2006, 2007)

• Piston Type: GP Series (Single Ring)

• Part Number: 841M05400

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