Wiseco RE905M05600 Racer Elite 2-Stroke Piston Kit 56.00mm Bore YZ125

The Wiseco RE905M05600 is a Racer Elite series forged 2-stroke piston kit designed for serious riders and racers demanding the highest level of performance and durability. Featuring a 56.00mm bore, this piston kit is engineered, forged, and machined in Wiseco's Ohio, USA facility to exacting tolerances.

Key Features:

• 2000 Series Alloy Forging — The first 2-stroke pistons forged from 2000 series alloy, delivering superior tensile strength and an optimized strength-to-weight ratio over OEM cast components
• ArmorPlating Surface Treatment — Applied to the crown, ring groove(s), and pin bores to protect against harmful detonation, friction wear, and ring micro-welding
• ArmorFit Skirt Coating — Proprietary skirt coating conforms to the cylinder bore for optimized fitment and reduced operating friction, translating directly to improved performance
• Asymmetric Skirt Design — Improves wear characteristics and promotes even loading on the major thrust skirt
• DLC-Coated Piston Pin — Diamond-like carbon coating reduces friction and smooths operation at the wrist pin
• Enhanced Pin Oiling — Improved lubrication channels extend piston pin and connecting rod small-end life
• Precision Fit Compression Ring — Custom-lapped ring provides improved sealing and power retention
• Pressure Seal Groove — Reduces ring lifting and associated power loss under high-RPM conditions
• High-Compression Dome Design — Optimized for maximum torque and throttle response
• R&D Developed — Dyno-proven power gains validated through in-house engine testing

The Wiseco Racer Elite piston kit includes the forged piston, high-quality compression ring, DLC-coated wrist pin, and circlips — everything needed for a complete top-end rebuild. Built for the most demanding 2-stroke racing conditions, the Racer Elite series represents the pinnacle of Wiseco's 2-stroke piston technology.