





KIBBLEWHITE Valve Guide - Manufacturer Ref. 40-0482
Designed for restorations and engine rebuilds of roadsters and classics, this Kibblewhite valve guide is machined from nickel-aluminium bronze C630 (C63000) and made in the USA. Its composition — approximately 5% nickel for improved wear resistance and ~80% copper for high thermal conductivity — ensures durability in high-temperature areas typical of vintage exhausts.
The profiles of this guide limit the impact on flow while maintaining critical thickness in hot areas, thus promoting longevity and reliability of the valve seat. A preferred part for those restoring an air-cooled engine or preparing a cylinder head for the road, compatible with vintage models such as the Kawasaki Z 1000 Eddie Lawson Replica, Z 1000 LTD, and Z 1000 from 1982-1983.
Installation and wear checks recommended by a qualified workshop: adjustment, initial lubrication, and checking the stem/valve clearance to ensure a clean and secure fit.