Guide, C630, EX STD,

Yamaha WR/YZ 400/426, 1998-2002

EXHAUST YAMAHA YZF/WRF 400/426 98-02,
Item # 80-80120, Valve Guides for YAMAHA
Exhaust - G (Std. 0.3957") C630 Bronze

Dimensions:
A. 0.580" (14.74mm)
B. 0.610" (15.50mm)
C. 0.580" (14.74mm)
D. 0.695" (17.66mm)
E. 0.420" (10.67mm)
F. 0.1960" (4.98mm)
G. 0.3957" (10.05mm)

Please call for oversize Valve Guides
We choose to use the copper based C63000 nickel-aluminum

We choose to use the copper based C63000 nickel-aluminum bronze as a material to make our 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.

Part No. 65-942+000 (phoenixmotos.com) Valve Guides STD.