Valve guide Kit SUBARU EJ20 / EJ25 WRX / STi Turbo DOHC / Impreza WRX / STi Opel Toyota Proace Verso 5WZ-HV 1

Toyota Proace Verso 5WZ-HV 1

Alfa Romeo 156 I4 1

60 60mm 55mm 84  GTX3071R Reverse Rotation 54mm 71mm 58 0

BMW R1100R SE - All 1999

Valve guide Kit SUBARU EJ20 / EJ25 WRX / STi Turbo DOHC / Impreza WRX / STi Opel Toyota Proace Verso 5WZ-HV 1Our valve guides are precisely made of high quality manganese bronze. The Supertech valve guides are designed to be used in conjunction with our valves with low friction black nitrided material to provide the best solution in terms of both performance and durability. In the case of exhaust valves designed for use in high power engines that require a better heat transfer coefficient, we use a copper alloy conductor. Copper has about three times higher