The KAMEARI FJ20 Racing Valve Guide Set feature resilient material, and a shortened design, for racing performance. The demands of valve guides are resistance to wear and abrasion, tolerance to high temperature, and seizure. This is only accomplished by combining two metals and precision machining the of the inside of the guide. In addition these guides only allow the minimum valve clearance so that the valves are moving properly during high RPMs.
Material: Polybrominated biphenyl (PBB)