BMR 68-72 A-Body Non-Adj. Rear Suspension Kit - RedIn addition, the reinforcement braces strengthen the upper control arm frame mounts by tying the upper mounts and lower mounts together. BMR's suspension designed its Rear Suspension Kits to work well in street performance, drag race, and road race applications. The heavy duty construction of the upper and lower control arms eliminate flex, giving you much improved repeatability on the street, starting line, or in the corners. BMRs polyurethane