Description
Features
- Unleash all the power your Honda GROM can handle with the Koso 170cc Big Bore kit.
- Top end gasket kit and banjo bolts
- 61mm bore, 11.5:1 compression ratio forged piston/ring kit (premium fuel required)
- Ceramic coated aluminum cylinder
- Not legal for use in California on pollution controlled vehicles, race use only in California - waiver available
| 2021 | Honda | MSX125 Grom |
| 2020 | Honda | MSX125 Grom |
| 2019 | Honda | MSX125 Grom |
| 2018 | Honda | MSX125 Grom |
| 2017 | Honda | MSX125 Grom |
| 2016 | Honda | MSX125 Grom |
| 2015 | Honda | MSX125 Grom |
| 2014 | Honda | MSX125 Grom |
| 2013 | Honda | MSX125 Grom |
| 2021 | Honda | MSX125A Grom ABS |
| 2020 | Honda | MSX125A Grom ABS |
| 2019 | Honda | MSX125A Grom ABS |
| 2018 | Honda | MSX125A Grom ABS |
| 2021 | Honda | Z125 Monkey |
| 2020 | Honda | Z125 Monkey |
| 2019 | Honda | Z125 Monkey |
| 2021 | Honda | Z125A Monkey ABS |
| 2020 | Honda | Z125A Monkey ABS |
| 2019 | Honda | Z125A Monkey ABS |
