Wiseco Pistons 841M05400 GP Series Piston Kit 54.00mm Standard Bore 2-Stroke

The Wiseco GP Series Piston Kit 841M05400 is engineered for high-performance 2-stroke applications requiring endurance and sustained-RPM performance. This complete piston kit features a 54.00mm standard bore and is specifically designed for Honda CR125R dirt bikes.

Advanced Coating Technology:

• Electra-Coated crown, ring grooves, and pin bores resist wear, combustion heat damage, and ring micro-welding
• ArmorGlide skirt coating reduces friction for optimized performance and extended service life
• Hard-coat anodized treatment for superior durability

Premium Construction:

• Forged from high-silicon aerospace-quality aluminum alloy for exceptional strength-to-weight ratio
• CNC machined for high precision and tight tolerances
• Diamond-turned finish ensures perfect surface quality with zero size variation
• Engineered, forged, and machined in the USA in Mentor, Ohio

Complete Kit Includes:

• One forged piston (54.00mm bore)
• One ring set (2126CS TiN coated)
• One wrist pin
• Two circlips

Built on Wiseco's proven Pro-Lite platform with over 70 years of racing experience, this GP Series piston delivers optimal performance for both recreational riders logging hard hours and competitive racers demanding consistency. The optimized piston shape and profile maximize top-end power while maintaining long service life in demanding 2-stroke applications.