Ferrea dual valve spring with damper offered as a set of 16, carrying the same dimensional listing: 1.225–1.570 inch diameter, 1.04/1.56 OD and 0.74/1.145 ID. This set supplies all valves for heads matching those measurements, providing a consistent dampered dual-spring configuration for rebuilds or full replacements.
Ferrea 1.225in to 1.570in Dia 1.04/1.56 OD 0.74/1.145 ID Dual w/Damper Valve Spring - Set of 16