I put stock 04 Mach one springs in my stang. After trying all kinds of different springs they seem to be my mama bear. They seem to be the perfect balance of good weight transfer and handling. Not too stiff not too soft. Not too low not too high.

Does anyone know the spring rates on these? The rears look about the same as stock GT springs but the fronts look much stiffer and larger. . .

 

The Mach's front rate is 600 lb/in and the rear is 250 lb/in.

The GT's front is 450 lb/in and the rear is 210 lb/in.

 

Ah so the rears are a little stiffer. Thank you very much!