Ferrea VQDE & VQHR Dual Coil Valve Springs any other use including recreational

any other use including recreational off-road use

Can be mounted directly to the Engine

rigid design may increase spline wear Quality Carefully engineered

100% Reliability

Carrillo VHR Super A-Beam Rods and Carrillo Signature WMC Hardware

Ferrea VQDE & VQHR Dual Coil Valve Springs any other use including recreationalFerrea VQDE & VQHR Dual Coil Valve Springs Outside Diameter: 20. 8mm Inside Diameter: 15. 88mm Seat Pressure: 80lbs @ 34 mm Open Pressure: 200lbs @ 24. 8mm Spring Rate: 305lbs inch Coil Bind: 19mm Max Net Lift: 13mm Harmonics or high frequency fatigue is present in all racing engines and will usually destroy the valvetrain if not controlled. Properly designed valve springs will control the dominant harmonics, provide the needed stability, and reduce