| Supertech performance valve springs are made with premium Superclean Chrome Silicon Vanadium Steel Alloy for higher performance and durability. Computer designed to ensure that wire stress levels do not overpass the limits for long durability under extreme conditions and harmonics are well under control.
This price includes everything to convert to a dual spring setup including the springs, retainers, locators and valve seals.
Works with all 4G63 heads. |
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