SPRINGS .685 BT EVO 84-04

Springs are made from super-clean, stress relieved chrome silicon wire. Provide excellent durability and resistance to load loss when using aggressive camshaft profiles. Includes unique 10° super keys and retainers. Wider key angle ensures a stronger assembly vs. the OEM 7° keeper angle. High-strength chromoly retainers. 0.685" lift capable spring assembly. Kit fits 5/16" valve stems. 184 lb.@1.850". 443 lb.@1.230". 1.510" OD 0.745" ID. Made in the USA.