When hotchkis decided to manufacture coil spring for the 09-Challenger RT.  They took their time and researched other springs on the market. With those springs in mind they found a great combination of performance and comfortable ride characteristics. The springs feature a linear rate design, and come complete with urethane bump stops.

Not for vehicles with load leveling suspension

Drop:

RT Models - Front 1 7/16", Rear 11/16"

Spring Rate:
Front: 280lb
Rear: 650 lb