Ferrea 84-98 Harley-Davidson Evolution 1.005/1.440in OD .725/1.065in ID Dual Valve Springs-Set of 4

Ferrea is known for making well-built engine components, and this set of dual valve springs for the 84-98 Harley-Davidson Evolution engine is no exception. These springs are designed to handle the demands of performance engines, ensuring your valves close reliably under high RPMs and pressure. This set includes four springs, enough for one cylinder.

Each spring in this set has an outer diameter of 1.005 inches and an inner diameter of 0.725 inches, with a larger outer diameter of 1.440 inches and an inner diameter of 1.065 inches for the dual spring setup. This dual spring design helps to control valve float and provides a more stable valve train, especially when you're pushing your engine hard. They are a solid option for anyone rebuilding or upgrading their Evolution engine.