Short block for OORacing Phase 5 YX 125/140
- Needle roller
- 16mm kick start shaft
- 57mm stroke
- Zen Bearings
Hand balanced crank. Stock balance is not too accurate.
This is our best short block with the latest gear box, Built and set up in house @OORacing UK
All up Poz stop gears
Please note short block is pre built, shimmed up ready for you to build up with your parts
Kit includes: