Manley, high lift valve spring kit. .500" to .650" lift - 66-84 Shovelhead (NU) 514234 does not include speedometer

does not include speedometer

Self-locking on pipes and nuts: no slipping on the workpiece and low handforce required

Premium cork/rubber blend material

Single tower for 1 plug per coil

Available in several popular styles

Manley, high lift valve spring kit. .500" to .650" lift - 66-84 Shovelhead (NU) 514234 does not include speedometerIncludes titanium top collars, steel lower collars, valve springs and a valve key set. Machining required to lower the valve guide to avoid interference with the top collar. Special 3 spring design with interference fit to reduce harmonics and control spring surge. Springs have more pressure than stock. Pressure: 180lbs 1. 600" 365lbs 1. 100" 415lbs . 950". Coil bind: . 850"