BMR Suspension Multi-Leaf Leaf Spring - 2 in Lowering - Black - GM F-Body 1967-69 Shock Bump Stops The internal arch support is

The internal arch support is not found in many motorsports shoes but greatly increses the comfort when wearing for an extended period

easy adjustments from outside of the car

Together they developed the Practice Tree

Carbureted gasoline applications require regulator P/N 13202 or P/N 13212

heated seats

BMR Suspension Multi-Leaf Leaf Spring - 2 in Lowering - Black - GM F-Body 1967-69 Shock Bump Stops The internal arch support isLeaf springs do much more than simply supporting the weight of the vehicle. They are responsible for locating the axle, setting pinion angle, and controlling rearend movement. This makes them a critical part of the rear suspension. BMR's leaf springs give a superior option to stock leaf springs that sag, rust, and do little to control axle wrap and wheelhop as they get older. The SP057 feature a 2 inch drop, three leafs, and a 190 lb in spring rate,