UMI Performance Suspension Control Arm
UMI Performance 401517-R Rear Upper Control Arms for GM A-Body
UMI Performance 2018CM-R Lower Control Arms Chrome Moly Tubular Rear Suspension
UMI Performance 3627-R Lower Control Arms with Roto-Joint Technology
UMI Performance 2310CM-B Front Upper Control Arms A-Arm Set 4th Gen F-Body
UMI Performance 402119-R Rear Control Arm Kit with Adjustable Uppers
UMI Performance 2300-B Tubular Lower A-Arms Control Arms for Drag Racing
UMI Performance 2310CM-R Upper Control Arms A-Arm Set with Ball Joints
UMI Performance 2300-R Tubular Lower A-Arm Control Arm Set for Drag Racing
UMI Performance 401519-R Rear Control Arm Kit Upper & Lower Adjustable
UMI Performance 2035-R Double Adjustable Lower Control Arms with Roto-Joints - Rear
UMI Performance 4043B Rear Lower Control Arms - Adjustable with Roto-Joints
UMI Performance 3033-R Upper A-Arm Tubular Control Arm for GM G-Body
UMI Performance 4043-R Double Adjustable Lower Control Arms with Roto-Joints - Rear
UMI Performance 4020-R Rear Lower Control Arms Lift Bars Weld-In
UMI Performance 3027-B Double Adjustable Lower Rear Control Arms GM G-Body Black
UMI Performance 4022-R Rear Lower Control Arms Lift Bars with Adjustable Mounting
UMI Performance 201621-B Lower Control Arms Tubular Adjustable Kit
UMI Performance 4020-B Rear Lift Bar Control Arms - Weld-In, Adjustable 3-Position
UMI Performance 3040-R Rear Lower Control Arms with Roto-Joint Spherical Bushings
UMI Performance 2034-R Tubular Rear Lower Control Arms GM F-Body 1982-2002
UMI Performance 3033-B Tubular Front Upper A-Arms Black Powder Coat | GM G-Body S10 S15
UMI Performance 4040-R Rear Lower Control Arms with Roto-Joint Technology
UMI Performance 401526-R Tubular Rear Control Arm Kit with Adjustable Uppers - Red
UMI Performance 401526-B Rear Upper & Lower Tubular Control Arm Kit A-Body
UMI Performance 4040-B Rear Tubular Lower Control Arms with Roto-Joints
UMI Performance 4041-R Rear Lower Control Arms with Roto-Joint Technology
UMI Performance 4041-B Rear Lower Control Arms with Roto-Joint Technology
UMI Performance 2035CM-R Double Adjustable Rear Lower Control Arms Chromoly Red Pair
UMI Performance 3619-B Upper Control Arms Extended Length Adjustable Rear
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.