Spohn Performance 644B Features:

Replace the factory's weak and flexible rubber bushed rear upper control arm on your 1959-1964 Chevy B-Body Impala, Biscayne, Bel Air, etc. with our heavy duty adjustable tubular unit!
Our tubular adjustable rear upper control arm allows you to set your pinion angle and provides for serious handling performance and greatly increases the rear end's fore and aft stability.
After more than 60 years of use the factory rear upper control arm is corroded and the rubber bushings are cracked and dry rotted which adversely effects the performance of your car.
Improve your ride quality, reduce body roll, eliminate wheel hop, and increase traction with an easy bolt on installation.
All ends are fitted with grease fittings for easy lubrication of the fluted polyurethane bushings. Powder coated for a brilliant and durable finish.
Priced per Arm -- Qty. 1 = 1 Arm: You will need to verify whether your car has one or two rear upper control arms. All six cylinder and most small block cars were equipped with one rear upper control arm. Big block cars were equipped with two rear upper control arms.
Fitment Note: Fits 1959-1964 Chevy B-Body cars only.

• 1.25 in. x 0.120 in. wall DOM tubing
• Stronger, yet lighter than stock
• Polyurethane bushings (fluted) with grease fittings for easy lubrication
• TIG welded 4130N chrome moly threaded tube adapters
• Right hand and left hand threaded CNC machined 4140 chrome moly double male adjuster allows for easy on-car adjustment
• This is the highest quality, easiest to adjust on the car rear upper control arm on the market!
• Ships to you fully assembled and jig set at OEM length
• Powder coated for a brilliant and durable finish