UMI Performance Suspension Control Arm
UMI Performance 3056-2-B Adjustable Upper A-Arm with 1/2" Taller Ball Joints Black
UMI Performance 3056-1-B Adjustable Upper A-Arm with Standard Ball Joints Black
UMI Performance 4062-1-B Front Upper Control Arms 1964-1972 GM A-Body Coilover
UMI Performance 4216-B Rear Upper Control Arms Heavy-Duty Polyurethane Bushing Set
UMI Performance 3027-R Rear Lower Control Arms Double Adjustable with Spherical Rod Ends Red
UMI Performance 2015-R Rear Lower Control Arms Red Powder Coat Pair
UMI Performance 4021-B Rear Lower Control Arms - Boxed Design with Polyurethane Bushings
UMI Performance 3016-B Rear Upper Control Arms Non-Adjustable Tubular GM G-Body
UMI Performance 3031-B Lower A-Arm Suspension Control Arm with Polyurethane Bushings
UMI Performance 1025-R Rear Lift Bars Control Arms for GM A-Body G-Body
UMI Performance 2010 Lower Control Arm Relocation Bracket Weld-In
UMI Performance 2015-B Rear Lower Control Arms Black Powder Coat GM F-Body
UMI Performance 401518-B Rear Lower Control Arms for GM Vehicles
UMI Performance 401417-B Rear Upper Control Arms - Adjustable Tubular Design
UMI Performance 643546-R CornerMax Front A-Arm Suspension Kit
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.