UMI Performance Adjustable Rear Upper Control Arms - Poly Bushings - Red (1978-1996 GM B-Body) (3618-R)
Fine-tune rear axle pinion angle, reduce suspension deflection, and eliminate traction-robbing wheel hop with the UMI Performance "On-Car" Double Adjustable Rear Upper Control Arms with Polyurethane Bushings (3618-R). Specially engineered for 1978-1996 GM B-Body platforms—including the Chevrolet Impala SS, Caprice, Buick Roadmaster, and LeSabre—these heavy-duty tubular control arms replace weak factory stamped steel arms to deliver maximum performance and drivability for daily street cruisers and high-horsepower street/strip builds.
Constructed in Philipsburg, PA, USA from heavy-duty mild steel tubing and CNC laser-cut 1/4" mounting pads, these control arms feature high-strength 4140 chromoly threaded tube adapters and UMI's custom double-threaded chromoly turnbuckle adjuster. This allows quick and effortless "on-car" pinion angle adjustments simply by loosening two jam nuts—no unbolting required. Pre-assembled with low-deflection, greaseable polyurethane bushings and zinc-plated steel inner sleeves, these arms maintain firm rear end control while isolating road noise and vibration. Finished in a durable bright red powder coat for superior corrosion protection and bold underbody styling.
Features
- On-car double-adjustable design using UMI chromoly turnbuckle adjusters for easy pinion angle fine-tuning
- Eliminates wheel-hop and minimizes rear suspension deflection during hard launches
- Heavy-duty mild steel tubular construction with CNC laser-cut 1/4" mounting pads
- High-strength 4140 chromoly threaded tube adapters for maximum thread durability and load capacity
- Low-deflection greaseable polyurethane bushings with zerk fittings and zinc-plated steel sleeves
- Direct bolt-in upgrade compatible with OEM and aftermarket rear axle housings
- Durable bright red powder coat finish for superior corrosion resistance and eye-catching styling
- 100% designed, tested, and manufactured in Philipsburg, PA – USA
Specifications
- SKU: 3618-R
- Manufacturer: UMI Performance
- Country of Origin: USA (Philipsburg, PA)
- Material: Heavy-Duty Mild Steel Tubing
- Mounting Pads: 1/4" CNC Laser-Cut Steel
- Thread Adapters: 4140 Chromoly Steel
- Bushings: Greaseable Polyurethane w/ Zinc-Plated Sleeves
- Adjustability: On-Car Double Adjustable (Chromoly Adjuster)
- Finish: Bright Red Powder Coat
- Product Weight: 8.0 lbs
- Dimensions: 14" x 6" x 6"
- Unit of Measure: Pair (Driver & Passenger Side)
- Hardware: Reuses OEM Frame Hardware (or optional aftermarket kit)
Fitment Notes
- Position: Rear Upper Control Arms (Pair).
- Fits 1978-1996 GM B-Body platforms (Chevrolet Impala SS, Caprice, Buick Roadmaster, LeSabre, Pontiac Bonneville, Catalina).
- Direct bolt-in installation using basic hand tools (estimated 1-2 hours install time).
- Works with all OEM and aftermarket rear end housings.
Fitment
1991 Buick Roadmaster
1992 Buick Roadmaster
1993 Buick Roadmaster
1994 Buick Roadmaster
1995 Buick Roadmaster
1996 Buick Roadmaster
1978 Buick LeSabre
1979 Buick LeSabre
1980 Buick LeSabre
1981 Buick LeSabre
1982 Buick LeSabre
1983 Buick LeSabre
1984 Buick LeSabre
1985 Buick LeSabre
1978 Chevrolet Caprice
1979 Chevrolet Caprice
1980 Chevrolet Caprice
1981 Chevrolet Caprice
1982 Chevrolet Caprice
1983 Chevrolet Caprice
1984 Chevrolet Caprice
1985 Chevrolet Caprice
1986 Chevrolet Caprice
1987 Chevrolet Caprice
1988 Chevrolet Caprice
1989 Chevrolet Caprice
1990 Chevrolet Caprice
1991 Chevrolet Caprice
1992 Chevrolet Caprice
1993 Chevrolet Caprice
1994 Chevrolet Caprice
1995 Chevrolet Caprice
1996 Chevrolet Caprice
1994 Chevrolet Impala SS
1995 Chevrolet Impala SS
1996 Chevrolet Impala SS
1977 Pontiac Bonneville
1978 Pontiac Bonneville
1979 Pontiac Bonneville
1980 Pontiac Bonneville
1981 Pontiac Bonneville
1977 Pontiac Catalina
1978 Pontiac Catalina
1979 Pontiac Catalina
1980 Pontiac Catalina
1981 Pontiac Catalina
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
