
KIBBLEWHITE C674 Valve Guide (Manufacturer's Ref: 80-80920)
Intake guide designed for tuning and cylinder head refurbishment operations on motocross machines. Machined from C674 bronze (manganese bronze), this guide offers strict KPMI® tolerances and compatibility with Kibblewhite lapping tools for precise valve seat fitting. Made in the USA.
Designed to be reamed and lapped with standard tools (electric or cordless drill + Kibblewhite ball hones), this C674 guide remains softer than the premium C630 nickel-aluminium bronze version and therefore has lower strength and durability. Ideal for maintenance interventions and refurbishment of intake seats on motocross engines.
Frequently Compatible Motorcycles: