Kibblewhite Valve Guide Kit
Kibblewhite Valve guides use copper based C63000 nickel-aluminum bronze as a material to make bronze valve guides because of its ideal characteristics for the application. The 5% nickel content provides superior resistance to wear, and the approximately 80 percent copper content delivers outstanding heat conductivity. KPMI® guide profiles are designed to have minimal effect on the airstream while maintaining critical cross sectional thickness in high temperature areas, which promotes high performance and endurance.
Fits:
-19-20 Yamaha YZ250F
Intake Specs:
| Quantity | Set of 2 |
| Material | C630 Bronze |
| Type | Intake |
| Outside Dia.: (G) | 0.3957" / Std. |
| A | 0.435" |
| B | 0.470" |
| C | 0.415" |
| D | 0.745" |
| E | 0.430" |
| F | 0.1962" |
Exhaust Specs:
| Quantity | Set of 2 |
| Material | C630 Bronze |
| Type | Exhaust |
| Outside Dia.: (G) | 0.3563" / Std. |
| A | 0.330" |
| B | 0.365" |
| C | 0.590" |
| D | 0.815" |
| E | 0.391" |
| F | 0.1760" |
Set of 4
Individual Guides and Oversized Guides are available for purchase, if needed.
