- Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason
- Gives the rider a choice of using standard gas with stock compression, or race gas with a higher compression
- Specifically designed for the pro, semi-pro and amateur rider
- Freshens up their engine prior to a race or during mid-season
- Kits do not include valve stem seals, rubber part, shims or other fiber gaskets
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1985 | Yamaha | Moto 4 YFM200 | |
| 1983-1985 | Yamaha | Tri Moto 200 YTM200 | |
| 1986 | Yamaha | Tri Moto 225 YTM225DR | |
| 1983-1985 | Yamaha | Tri Moto 225 YTM225DX | |
| 1982-1983 | Yamaha | XT200 | |
| 1983-1985 | Yamaha | Yamahauler 200 YTM200E | |