Manufactured using a super low friction COLSIBRO material using the very best machinery ensuring unrivalled tolerances. 

COLSIBRO is a precipitation hardening copper nickel silicon that offers a remarkable blend of physical and mechanical attributes unrivalled by many other grades of copper alloy. It is widely specified for use in high performance automotive and motorsport engine components including valve guides, valve seats, gears and bushes.

Suitable for both inlet & exhaust valves.

Sold Individually.

All shipments are on tracked and signed for services to ensure the most reliable service to all customers.

Please do not hesitate to contact us if you have any queries,