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 (oro2u.com) Valve Guides STD.