Wiseco REP823M07700 Racer Elite Piston Kit CR - YZ250F 4-Stroke 77mm 14.5 1

The Wiseco REP823M07700 Racer Elite Piston Kit is a high-compression, full-race replacement piston engineered for the Yamaha YZ250F. Designed for serious riders and racers who demand maximum performance, this kit features a 77.00mm bore diameter and a high 14.5:1 compression ratio built around a dome piston design developed through extensive R&D.

Key Features:

• 100% Billet Machined Construction — Fully machined billet allows for optimal weight reduction and precision-machined boxed under-crown structure
• Asymmetric Skirt Design — Minimizes contact with the cylinder wall to reduce friction and keep weight to a minimum
• ArmorGlide Skirt Coating — Advanced skirt coating keeps friction as low as possible throughout the life of the piston
• ArmorPlating Surface Treatment — Applied to the crown, ring groove, and pin bores to protect against detonation, friction wear, and ring micro-welding
• DLC Coated Piston Pin — Diamond-Like Carbon coating on the wrist pin for superior hardness and reduced friction
• Enhanced Pin Oiling — Improved oiling passages ensure consistent lubrication to the wrist pin under race conditions
• Pressure Seal Groove — Precision ring groove design improves ring seal for enhanced compression retention and power output
• High Compression Dome Design — 14.5:1 compression ratio dome profile developed for maximum power output
• R&D Developed — Engineered and validated through dyno testing for proven performance gains

Kit Includes: Piston, precision-fit piston rings, DLC-coated wrist pin, and circlips.

The Wiseco Racer Elite series represents the pinnacle of shelf-stock piston technology, offering race-level performance backed by dyno-proven results. This piston kit is engineered and produced in the USA.