Description
Eibach 13" Rear Coil Spring 5" O.D. 225 lb. 42020R 580" Spring Seat Cutter from WEI7155 580" Spring Seat Cutter from COMP Cams will allow the engine builder to machine the cylinder head to the proper size for your spring 250" square bolt pattern from their high strength spring steel alloys The experience Eibach gains at the highest levels of racing is directly converted into the development of the highest grade racing springs on the planet