RB20 RB25 Supertech BRONZE MAGNESIUM VALVE GUIDES SET OF 24
Supertech Valve Guides are precision-machined from high quality Magnesium Bronze material. These guides in combination with low friction nitrated valves provide the best solution for performance and durability.
For Exhaust guides for high powered engines that need a better thermal transfer coefficient, we use a copper alloy. Copper has about 3 times higher thermal transfer than Manganese Bronze
Full set of x12 intake & x12 exhaust guides