Features:
- Made in the USA.
- Made from copper-based C63000 nickel-aluminum bronze.
- The 5% nickel content provides exceptional wear resistance, while the approximately 80% copper content provides excellent thermal conductivity.
- Profiles are designed to have minimal impact on airflow while maintaining critical cross-sectional thickness in high temperature areas, which promotes high performance and durability.
Dimensions:
- Inner diameter 0.1960".
- Outer diameter 0.4380".
Fit the models:
| HONDA |
CRF 450 R |
2017 |
| HONDA |
CRF 450 R |
2019 |
| HONDA |
CRF 450 R |
2021 |
| HONDA |
CRF 450 R |
2020 |
| HONDA |
CRF 450 R |
2018 |
| HONDA |
CRF 450 RWE |
2019 |
| HONDA |
CRF 450 RWE |
2020 |
| HONDA |
CRF 450 RWE |
2021 |
| HONDA |
CRF 450 RX |
2017 |
| HONDA |
CRF 450 RX |
2018 |
| HONDA |
CRF 450 RX |
2019 |
| HONDA |
CRF 450 RX |
2020 |
| HONDA |
CRF 450 RX |
2021 |

Kibblewhite Precision Machining, Inc. (KPMI) is a U.S.-based manufacturer founded in 1939, specializing in high-performance valvetrain components for motorcycles and motorsports. Headquartered in Pacifica, California, KPMI is known for precision-engineered valves, springs, guides, and related parts, serving a global market including sportbikes, dirt bikes, and custom builds.
| Brand |
Model |
Year |
Name |
CC |
| HONDA |
CRF |
2017 |
|
450 |
| HONDA |
CRF |
2017 |
|
450 |
| HONDA |
CRF |
2017 |
Enduro |
450 |
| HONDA |
CRF |
2018 |
|
450 |
| HONDA |
CRF |
2018 |
Supermoto |
450 |
| HONDA |
CRF |
2018 |
|
450 |
| HONDA |
CRF |
2018 |
|
450 |
| HONDA |
CRF |
2019 |
Enduro |
450 |
| HONDA |
CRF |
2019 |
|
450 |
| HONDA |
CRF |
2019 |
Works Edition |
450 |
| HONDA |
CRF |
2019 |
|
450 |
| HONDA |
CRF |
2019 |
|
450 |
| HONDA |
CRF |
2019 |
|
450 |
| HONDA |
CRF |
2019 |
|
450 |
| HONDA |
CRF |
2020 |
|
450 |
| HONDA |
CRF |
2020 |
|
450 |
| HONDA |
CRF |
2020 |
|
450 |
| HONDA |
CRF |
2020 |
|
450 |
| HONDA |
CRF |
2020 |
|
450 |
| HONDA |
CRF |
2021 |
|
450 |
| HONDA |
CRF |
2021 |
Works Edition |
450 |
| HONDA |
CRF |
2021 |
|
450 |
| HONDA |
CRF |
2021 |
|
450 |
| HONDA |
CRF |
2021 |
|
450 |
| HONDA |
CRF |
2020 |
Works Edition |
450 |
| HONDA |
CRF |
2018 |
Enduro |
450 |