UMI Performance Suspension Control Arm
UMI Performance 1037CM-R Double Adjustable Lower Control Arms Chrome Moly
UMI Performance 4027-R GM A-Body Rear Lower Control Arms Double Adjustable Red
UMI Performance 2017CM-R Double Adjustable Rear Control Arms Chromoly
UMI Performance 302500-B Adjustable Upper Control Arms - Chromoly
UMI Performance 201621-R Adjustable Lower Control Arms - DOM Tubular with Polyurethane Bushings
UMI Performance 402118-B Rear Control Arm Kit for 1964-1967 GM A-Body
UMI Performance 3650-B Rear Lower Control Arms 1959-64 GM B-Body Black
UMI Performance 361516-R Rear Upper Control Arm Set for GM A-Body
UMI Performance Lower A-Arms Coilover Control Arms with Adjustable Steering Stops
UMI Performance 3039-B Upper Control Arms for GM 12-Bolt Rear End Swap G-Body
UMI Performance 4037-B Rear Upper Control Arms with Roto-Joints
UMI Performance 2033-B Lower Control Arms with Roto-Joint Technology for 1982-2002 GM F-Body
UMI Performance 1062-R Upper Control Arm - Rear Spherical Roto-Joint S197 Mustang
UMI Performance 4039-B Rear Upper Control Arms with Roto-Joints
UMI Performance 4039-R Rear Upper Control Arms with Roto-Joints
UMI Performance 2039-R Adjustable Rear Lower Control Arm with Roto-Joint Technology
UMI Performance 3025-R Upper Control Arms Adjustable with Polyurethane Bushings
UMI Performance 3617-R Upper Control Arms with On-Car Adjustability and QA1 Rod Ends
UMI Performance 1017-R Upper Control Arms for Ford Mustang - 1979-2004
UMI Performance 2311-B Tubular Front Upper Control Arms A-Arm Set
UMI Performance 3019-B Adjustable Rear Upper Control Arms GM G-Body 12-Bolt Swap Black
UMI Performance 1016-B Rear Upper Control Arms with Polyurethane Bushings
Representative Photo, actual item may vary
UMI Performance 3619-R Upper Control Arms - Adjustable Extended Length Rear Suspension
UMI Performance 1014-R Lower Control Arms Adjustable Tubular for Mustang - 1999-2004
UMI Performance 2016CM-R Adjustable Lower Control Arms - Chrome Moly Construction
UMI Performance 4038-R Rear Lower Control Arms with Roto-Joint Technology
UMI Performance 3038-R Rear Non-Adjustable Lower Control Arms Poly/Roto-Joint Red
UMI Performance 3036-B Rear Upper Tubular Control Arms with Roto-Joint Technology
UMI Performance 3620-R Extended Upper Control Arms for Impala SS
UMI Performance Suspension Control Arms: Precision Engineering for Muscle Car Handling
When stock control arms stand between your muscle car and its true handling potential, UMI Performance delivers the solution. As one of the most respected names in American muscle car suspension, UMI has built its reputation on suspension control arms that are engineered to eliminate the flex, bushing deflection, and geometric slop that plague factory setups — whether your goal is pro-touring, autocross, drag racing, or spirited street driving.
What Sets UMI Control Arms Apart
UMI Performance's control arms are the product of genuine hands-on development. The company installs and tests every chassis and suspension component it makes to ensure real-world performance before it ever reaches a customer's car. Every arm is manufactured in-house at UMI's facility in Philipsburg, Pennsylvania, where the production process includes CNC machining, CNC laser cutting, MIG and TIG welding, and a durable powdercoat finish — all under one roof, with zero outsourcing.
The lineup covers a wide range of configurations designed to match your build goals:
- Adjustable Upper Control Arms (“Ultimate Arms”): UMI's signature adjustable uppers feature a unique chromoly on-car adjuster that allows pinion angle changes right in the driveway — simply loosen two nuts and turn the adjuster with the arms still on the car. These arms use 4140 chromoly threaded tube adapters and a heat-treated 1.000 in. solid adjuster for maximum durability. PTFE-lined spherical rod ends provide “bind-free” operation ideal for track and autocross use.
- Boxed Lower Control Arms: UMI's boxed lowers are built from 0.120" wall thickness rectangular tubing with CNC-machined drawn-over-mandrel bushing holders and MIG-welded end caps to seal out road debris. They are a direct bolt-on replacement designed to minimize wheel hop, improve cornering, and increase track consistency.
- Poly/Roto-Joint Combinations: For street-performance builds, UMI offers control arms pairing polyurethane bushings on the chassis side with their proprietary swivel Roto-Joint on the axle end. The Roto-Joint's Delrin race liner absorbs shock and road noise for a smooth, quiet ride without sacrificing performance feedback.
- Energy Suspension Polyurethane Bushings: Many UMI control arms are equipped with greaseable Energy Suspension polyurethane bushings and zinc-plated steel sleeves as a major step up from the deflection-prone OEM rubber units.
Broad Vehicle Coverage
UMI's control arm catalog spans the most beloved American performance platforms, including GM A-Body, F-Body (1970–2002), B-Body, G-Body, and Ford Mustang applications. Coverage includes classic G-Body platforms like the 1978–1988 Monte Carlo, Regal/Grand National, Cutlass, and Grand Prix, making UMI a go-to resource for builders working across multiple generations of American iron.
Whether you are building a dedicated autocross weapon, a drag-strip-focused machine looking to cut 60-foot times, or a street pro-touring cruiser that needs crisp handling without harshness, UMI Performance's control arm lineup offers a fitment and bushing configuration tuned for your exact use case. Explore the full UMI Performance brand page or browse all available suspension control arms to find the right upgrade for your build.