JUN AUTO RACING VALVE GUIDE

We prepared two kind of valve guide. One is a strengthening part made of the PBB which is suitable for the tuning engine. One more is the valve guide made of cast iron which is same as stock specification.
In the case of tuned engine, the heat and mechanical load by high rotation is very much rather than stock. Stock valve guide may damage. The JUN Racing Valve Guide is improved its strength and heat conduction by using raw material, phosphorus-bronze. This therefore avoid the any damage from high rotation of tuned engine.
In the cast iron valve guide, we kept quality but cheaper than stock valve guide which is rather expensive lately. We recommend our valve guides when you overhaul your cylinder head.

For more details please go through the below link...
JUN AUTO RACING VALVE GUIDE