Supertech Valve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance & durability at high rpms and better memory.
Computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue for long durability under extreme conditions.
Computer software also allows Supertech to make sure that the harmonics are well under control.
These are available with 70lb or 85lb seat pressure. The 70lb springs are typically referred to as the "all-motor" spring and the 85lb version as the "turbo" spring, but please consult your engine builder to determine what best suits your application. Many factors including your cam choice will affect what springs you will need.
We typically keep the 70lb kit in stock as it is more common, but under normal circumstances either kit can be shipped out quickly. Feel free to contact us to check our stock/lead times.