Description
If you’re rebuilding your Yamaha YZ 250 or WR 250 and want to maximize displacement without a complete engine overhaul, a +.50 mm oversize piston is the smart choice. Wiseco’s forged aluminum construction delivers the strength needed for aggressive riding while the E-Coat finish protects against wear and micro-welding—critical for engines pushing higher RPMs. Whether you’re chasing lap times or extending engine life after wear, this piston kit brings proven durability and measurable performance gains.
- Forged high-silicon aluminum
- 68.50 mm oversize (+.50 mm)
- E-Coated skirt protection
- Optimized compression geometry
- Reduced machining weight
- Fits YZ 250 1999-2022
- Fits WR 250 models
- Increased displacement capability
- Superior sealing design
- Expert-grade construction
