Wiseco PK1199 Pro-Lite Piston Kit 67.0mm (804M) for Yamaha YZ250

The Wiseco PK1199 Pro-Lite Piston Kit is a complete top-end rebuild solution engineered specifically for the Yamaha YZ250 two-stroke motocross engine. Featuring a 67.0mm (804M) bore, this kit provides everything needed to restore or overbore the top end in a single purchase.

Key Features:

• Forged aerospace aluminum construction — dedicated forgings provide a superior strength-to-weight ratio for demanding 2-stroke performance applications
• Pro-Lite piston design — extra lightweight construction for instant throttle response and reduced rotating mass
• CNC machined cam profile — computer-engineered piston skirt profile optimized for peak horsepower and extended service life
• Minimal cylinder wall friction — precision skirt geometry reduces heat and wear for long-lasting performance
• High-performance ring kit included — matched rings specifically chosen to complement Wiseco forged pistons for maximum ring seal
• Complete kit contents — includes forged piston, ring set, alloy wrist pin, and retainer circlips for a true one-stop rebuild
• Made in the USA — precision crafted and forged domestically on Wiseco's state-of-the-art forging presses

The PK1199 is part of Wiseco's Pro-Lite PK series, designed for riders who demand race-ready reliability and performance from their two-stroke top-end rebuild. All components are precision-matched to ensure correct fitment and optimal engine output right out of the box.