PAC Racing Springs 1200 Series Circle Track Single Valve Spring / Damper - 540 lb. - 1.115 in Coil Bind - 1.260 in OD 150-28-D52K Large Boot

Large Boot

200 RPM Increment Changes

Compatible with Ford EDIS computer controlled ignition system as well as Crane or MSD capacitive discharged (CD) DIS ignition systems

oil breather hole

and micron pre-filter are a 3-stage defense against dust

PAC Racing Springs 1200 Series Circle Track Single Valve Spring / Damper - 540 lb. - 1.115 in Coil Bind - 1.260 in OD 150-28-D52K Large BootProduct Description: Valve Spring 1200 Series Circle Track Single Spring Damper 540 lb in Spring Rate 1. 115 in Coil Bind 1. 260 in OD Sold Individually Traditional Springs are made from the same size (Diameter) wire throughout the helix of the spring. PAC Racing Springs has partnered with technology leaders in order to provide this advanced new tapered wire product. Tapered wire allows for a true progressive and dual rate without reducing spring