UMI Performance Suspension Control Arm
UMI Performance 403133-B Front Upper & Lower Tubular Control Arm Kit, Powder Coated
UMI Performance 2656-1-B Adjustable Upper Control Arm A-Arm Set, 4140 CrMo Cross Shaft
UMI Performance 402719-B Double Adjustable Upper & Lower Rear Control Arms, Black
UMI Performance 402126-B Rear Control Arms, Boxed, Polyurethane Bushings
UMI Performance 401525-B Rear Lower and Upper Control Arm Kit, Adjustable, Polyurethane Bushings
UMI Performance 501619-B Adjustable Rear Control Arms, Teflon-Lined Rod Ends
UMI Performance 2033-R Tubular Lower Control Arms for 1982-2002 GM F-Body
UMI Performance 403233-1-R Front Upper & Lower Tubular A-Arm Control Arm Kit
UMI Performance 403233-1-B Front Upper & Lower Control Arm Kit A-Body
UMI Performance 303133-1-R Lower A-Arm Control Arm Package with Ball Joints
UMI Performance 303133-1-B Lower A-Arm Control Arm Package with Ball Joints
UMI Performance 4031-R Tubular Front Lower A-Arms Red Powder Coat with Polyurethane Bushings
UMI Performance 4032-R Tubular Front Lower Control Arms with Delrin Bushings
UMI Performance 4032-B Front Lower Tubular Control Arms with Ball Joints
Representative Photo, actual item may vary
UMI Performance 4056-2-B Adjustable Upper Front Control A-Arm Powder Coat - Black
UMI Performance 2309-R Lower A-Arm Control Arm Set for GM 4th Gen F-Body
UMI Performance 2309-B Heavy Duty Boxed Lower A-Arms with Dual Rod Ends
UMI Performance 4033-1-R Front Upper Control Arms with Tall Ball Joints
UMI Performance 4033-1-B Front Upper Control Arms with Taller Ball Joints
UMI Performance 3033-1-R Upper A-Arm Control Arm with Tall Ball Joints
UMI Performance 230011-R Tubular Front A-Arm Control Arm Set 4th Gen
UMI Performance 3033-1-B Upper A-Arm Control Arm with Upgraded Ball Joints
UMI Performance 4033-R Front Upper Control Arms Tubular A-Arms
UMI Performance 402717-R Rear Double Adjustable Upper and Lower Control Arm Kit - Red
UMI Performance 402717-B Double Adjustable Rear Control Arms Kit Black
UMI Performance 230511-R Tubular A-Arm Control Arm Set Gen F-Body - Front 4th
UMI Performance Rear Lower Control Arms Boxed Design with Polyurethane Bushings
UMI Performance 2311-R Tubular Front A-Arm Set, DOM Steel, Ball Joints Installed
UMI Performance 2018CM-R Lower Control Arms Chrome Moly Tubular Rear Suspension
UMI Performance 301517-R Rear Tubular Lower & Adjustable Upper Control Arm Kit Red 1978-88 GM G-Body
UMI Performance 3031-R Lower A-Arm Control Arm with Polyurethane Bushings
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.