Description
If you’re running a vintage Yamaha YZ250 or WR250 two-stroke, piston wear directly impacts power delivery, throttle response, and engine longevity. The Wiseco 605M07000 is a purpose-built replacement that restores lost compression and responsiveness while delivering the durability needed for consistent performance in competitive and recreational riding. This complete kit eliminates guesswork with precision-engineered components that bolt together without requiring machine work.
- Bore: 70.00 mm
- Oversized: +2.00 mm
- Material: High-silicon forged aluminum
- Construction: Advanced forged design
- Includes: Piston rings, wrist pin, circlips
- Fitment: Yamaha YZ250 1988–1991
- Fitment: Yamaha WR250 1988–1991
- Installation: Bolt-on kit
- Weight: Lightweight for acceleration
- Application: 2-stroke engines
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