Kit Pistone e Cilindro Maggiorato -Athena - Yamaha WR250X WR250R

Specifications:
- Bore: 83.0 mm
- Stroke: 53.6 mm
- Displacement: 290.0 cc
- Compression ratio: 12,7:1
- Maximum power at the crank: 31 HP / 9200 rp
Injection will need remapping to get the best from Kit.
*Please note* Increased
Performance can put additional strain on aged components.
Licensing, Registration and Insurance may be affected (depending on country).