- The piston is heat-treated with a T-5 hardening and tempering cycle
- The piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston life
- Unique forged GP-style race piston with only one compression ring
- Piston kit includes piston, ring, wrist pin and circlips
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2005-2021 | Yamaha | YZ125 | |
| 2020-2022 | Yamaha | YZ125X | |