Eibach 9-1/2" Front Coil Spring - 5.5" O.D. - 850 lb. Engine Block Hardware The microphone boom shape has

The microphone boom shape has been improved to further deflect cabin noise

Rods have 5/8" threads and a tapered threaded end

They are a drop-in replacement for 1987 and later blocks that accept factory roller camshafts

Ford Mustang 2011-13

Installs easily with little to no drilling/trimming required -- all hardware is included

Eibach 9-1/2" Front Coil Spring - 5.5" O.D. - 850 lb. Engine Block Hardware The microphone boom shape hasEibach uses the world's finest quality, chrome silicon steel wire to produce coil springs with maximum travel and minimum weight. Eibach Springs are metric sized and, therefore, not limited to the SAE sized wire used in the production of many of the springs currently on the market. Eibach Springs are cold formed on CNC machinery, insuring precise tolerances on spring rates and free height, as well as longer life expectancy. Eibach Springs are heat