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UMI Performance Suspension Parts
Give your classic musclecar modern handling with UMI Performance! Built using the very latest design and machining technology, UMI Performance also installs and tests...
Give your classic musclecar modern handling with UMI Performance! Built using the very latest design and machining technology, UMI Performance also installs and tests every chassis and suspension component it makes to ensure that they perform as designed. UMI focuses on musclecars from the 1960s to today—A-bodies, F-bodies, B-bodies, G-bodies, and Mustangs. Choose from components like crossmembers, panhard bars, control arms, K-members, subframe connectors, and more. Many components fit like stock replacements, so they’re easy to install, but you’ll immediately notice tighter handling that’s easy to tune to your needs.
Give your classic musclecar modern handling with UMI Performance! Built using the very latest design and machining technology, UMI Performance also installs and tests every chassis and suspension component it makes to ensure that they perform as designed. UMI focuses on musclecars from the 1960s to today—A-bodies, F-bodies, B-bodies, G-bodies, and Mustangs. Choose from components like crossmembers, panhard bars, control arms, K-members, subframe connectors, and more. Many components fit like stock replacements, so they’re easy to install, but you’ll immediately notice tighter handling that’s easy to tune to your needs.
UMI Performance Adjustable Sway Bar End Links
UMI Performance adjustable front-end links directly replace the factory non-adjustable front sway bar end links. Adjustable end links allow you to adjust front sway bar preload and tune the front suspension. The sway bar end links are CNC-machined from 6061 T-6 aluminum for the utmost in strength and anodized black for long-lasting corrosion protection. Adjustments are made using the QA1 XM Series spherical rod end bearings, which prevent bind and allow the suspension to articulate correctly. The QA1 rod ends feature oil-impregnated PTFE lining which keeps the ball bearing lubricated at all times—allowing for quiet longevity. The adjustment of the sway bar end links are easily made on the car using right and left hand threads, and using the hex body as a turnbuckle.
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$39.99
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$199.99
UMI Performance Complete Front End Kit
UMI Performance complete front-end kits offer improved handling and great value. These non-adjustable upper and lower A-arm kits not only save you dollars, but weight on your front-end, while adding strength, better ride quality, and reduced bushing deflection. Built from strong DOM tubing, the fully assembled and ready-to-install A-arms have CNC-machined upper and lower ball joint holders and 4140 chromoly cross shafts. UMI upper A-arms feature greaseable Delrin® bushings, and the lower A-arms are supplied with new lower ball joints installed, polyurethane bushings, and sway bar mounting provisions. These UMI kits are designed to work with factory springs and lowering springs mounted in the factory location. The A-arms are given a durable and brilliant powdercoat finish. Order the complete front-end kit designed to fit your vehicle.
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$1,283.83
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$1,619.99
UMI Performance Competition Front End Kits
Tremendous front grip and a host of features can be yours with UMI Performance Competition front-end kits. The included A-arm kit enables 10 degrees caster while maintaining standard track width and wheelbase. Lower A-arms are assembled with tall lower ball joints to optimize roll center, camber gain, and center of gravity. Lower A-arms feature Delrin bushings for smooth travel and bind-free performance. The new lower A-arm works in conjunction with the included adjustable upper arm—which features minimum shim adjustability, Pro Forged ball joints, and super-smooth PTFE lined rod ends. The front sway bar attaches using UMI's swivel-style end link design and double shear mounting system. The included Viking Crusader coilover shocks mount to the lower A-arm in double shear quick-change brackets. The lower shock mount is removable to allow spring and shock changes at the track. UMI's kit features Viking Crusader shocks with AT pro-touring valving (high rebound tie-down for road race and autocross) and a true 2.5 in. racing coilover. The upper stud mount fits in the factory location, while the lower is optimized to fit UMI's 3057-1 coilover lower A-arm. Some grinding is required for installation in the upper frame spring bucket. Other spring rates and valve codes are available. The Competition kits have been battle-tested on the iconic UMI Green Machine. Kits are available in red or black powdercoat; and are 100 percent designed, manufactured, and raced with pride in the USA.
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$2,259.99
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$2,309.99
UMI Performance Panhard Bar Adjustable Bushing Ends
UMI Performance panhard bar adjustable bushing ends are designed to replace spherical rod ends on UMI panhard bars for the 1982-2002 Camaro/Firebird and 2005-09 Ford Mustang. They will also work on many other brand panhard bars that utilize a 3/4 in.-16 threaded right-hand rod end. These bushing ends replace 3/4 in.-16 threaded right-hand rod ends by simply removing the rod end and screwing in the polyurethane bushing assembly. The replacements are ideal for swapping out worn rod ends or rod ends making unbearable noise. The bushing holders are an easy replacement and are supplied fully assembled with Energy Suspension fluted bushings, grease fitting, new jam nut, and durable powdercoat. Bushing width is 1.875 in. with 3/4 in.-16 right-hand thread, 0.560 hole diameter and 1.750 in. of thread adjustment. UMI Performance bushing ends feature threads fabricated from 4140 chromoly steel, DOM tubing and TIG-welded for superior strength and thread durability. They're available in black or red.
Not Yet Reviewed
$39.99
UMI Performance Control Arm Adjustable Bushing Ends
UMI Performance control arm adjustable bushing ends are designed to replace spherical rod ends on UMI control arms for the 1964-72 GM A-Body, 1978-88 GM G-Body, and the 1982-2002 Camaro/Firebird. They will also work on many other brand control arms for the above listed vehicles that utilize a 3/4 in.-16 right-hand threaded rod end. These bushing end replacements install simply by removing the rod end and screwing in the polyurethane bushing assembly. The new bushing ends are an ideal upgrade for worn-out rod ends or rod ends making unbearable noise. Bushing holders come supplied fully assembled with Energy Suspension fluted bushings, grease fitting, new jam nut, and durable powdercoat. Bushing width is 2.400 in. with 3/4 in.-16 right-hand thread, 0.500 in. bolt hole diameter, and 1.750 in. of thread adjustment. UMI Performance bushing ends feature threads fabricated from 4140 chromoly steel, DOM tubing and TIG-welded for superior strength and thread durability. They're available in black or red.
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$39.99
UMI Performance Rear-End Housing Replacement Bushings
UMI Performance rear-end housing bushings will allow for the replacement of your rubber OEM bushings. UMI Performance rear-end housing polyurethane bushings replace the two upper control arm rear-end differential bushings (the bushings that stay attached to the rear-end). This will eliminate the dry rot and cracked and hardened bushings that will decrease your ride quality and performance. They are excellent upgrades for your street or track-driven vehicle.
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$34.99
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$59.99
UMI Performance Roto-Joint Rear-End Housing Bushings
The GM 4-link suspension has many things going for it, but modern ingenuity and materials have made for some exceptional replacement parts—such as UMI Performance Roto-Joint rear-end housing bushings. These bushings allow full articulation of GM's rear 4-link suspension when they're used in conjunction with rod ends or Roto-Joints in the other six locations. A gentle press fit is all that's needed for installation, and a spiral retaining ring keeps them in place. Pre-greased 6061 T-6 aluminum housings use Synco Super Lube to deliver smooth action for many years. Whether you use your vehicle for road racing, corner hugging, or Sunday driving, you'll feel safe in knowing your rear suspension will fully articulate with UMI Performance Roto-Joint rear-end housing bushings.
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$169.99
UMI Performance Rear-End Sway Bar Installation Kits
Do you have an aftermarket rear-end and no way to install a rear sway? You can solve the problem by using a rear-end sway bar installation kit from UMI Performance. These kits include bolt-on CNC-machined bushing mounts, heavy-duty zinc plated chromoly U-bolts, and longer polyurethane end links. These kits place the sway bar below the larger center section on aftermarket rear-ends and provide proper clearance. The supplied longer end links provide the proper geometry of the rear sway in its new mounting location. And, believe it or not, these kits will also work to adapt a rear sway bar to vehicles that were not supplied with a sway bar from the factory.
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$129.99
UMI Performance 1998-2002 F-Body LS1 Front End Kits (Drag, Stage 1)
UMI Performance 1998-2002 F-Body LS1 Stage 1 front-end kits are the ideal starting point for reducing front-end weight and enhancing weight transfer in your 4th Gen vehicle. The dual tube K-member is renowned for its strength and durability, capable of withstanding wheel stand landings and street abuse while also decreasing weight and protecting the oil pan. The rod end lower A-arms minimize friction, allowing the car to respond quickly off the line, and reduce weight by 8 lbs. UMI's K-member and A-arms are made from robust DOM tubing, precision-bent, CNC-notched, and welded in a jig for a solid foundation. The included K-member is compatible with factory motor mounts, polyurethane motor mounts, or UMI's solid billet aluminum motor mounts (P/N 2323). Whether you want to decrease front-end weight, improve engine clearance, or enhance your street/strip car, the Stage 1 package is a great starting point. UMI's Stage 1 kit includes the following: * Tubular dual tube K-member * Tubular lower A-arms with race quality rod ends * Grade 10.9 hardware with Ny-lock nuts Product features: * Heavy-duty K-member with dual tube construction * Tubular lower A-arms with race quality rod ends * Premium ball joints installed * 33 lbs. of front-end weight savings * Chromoly A-arms save an additional 1 1/2 lbs. * Works with factory steering rack * Direct bolt in replacement, no welding * Includes new grade 10.9 A-arm mounting hardware
Not Yet Reviewed
$1,449.99
UMI Performance 1993-1997 F-Body LT1 Front End Kits (Drag, Stage 5)
UMI Performance 1993-97 F-Body LT1 Stage 5 front-end kits provide a strong foundation for your strip car with occasional street use. The dual tube K-member is well-known for its durability, able to handle wheel stand landings and street wear while also reducing weight and protecting the oil pan. The rod end upper and lower A-arms minimize friction and unsprung weight, ensuring quick weight transfer. Made from DOM tubing, the K-member and A-arms are robust and precision-engineered for a solid base. Each kit also includes adjustable A-arms for added strength, weight reduction, lower friction, and alignment adjustments. Stage 5 kits come with Viking A226 bearing-mounted front coilovers featuring double adjustable shocks, allowing for ride height, compression, and rebound adjustments. They include everything necessary for installation and are a popular choice for many high-performance F-body cars. UMI's Stage 5 includes: * Tubular dual tube K-member * Tubular adjustable race lower A-arms with rod ends * Tubular adjustable race upper A-arms with rod ends * Grade 10.9 hardware with Ny-lock nuts * Viking front coilover kit, double adjustable, bearing mounted * Thrust bearing and spanner wrench Product features: * Heavy-duty K-member with dual tube construction * Tubular upper and lower A-arms with race quality rod ends * Wide flanged aluminum step bushings in a-arms * Premium upper and lower ball joints installed * Double adjustable race style bearing end Viking shocks * Height adjustment from 0 in. to 3 in. lowering * 300 lbs./in. front springs, for drag racing * 43 lbs. of front-end weight savings * Chromoly A-arms save an additional 1 1/2 lbs. * Works with factory steering rack * Direct bolt-in replacement, no welding
Not Yet Reviewed
$2,749.99
UMI Performance 1993-1997 F-Body LT1 Front End Kits (Drag, Stage 3)
UMI Performance 1993-97 F-Body LT1 Stage 3 front-end kits are designed for serious performance enthusiasts. The rod end upper and lower A-arms reduce friction and unsprung weight, enabling quick weight transfer. The dual tube K-member is the strongest in its class, able to withstand wheel stand landings and street abuse while also protecting the oil pan. Made from high-quality DOM tubing, the K-member and A-arms are precision-bent, CNC-notched, and welded in a jig for a solid base. PTFE-lined, race-quality rod ends and premium ball joints ensure durability and performance. The adjustable A-arms offer strength, weight reduction, reduced friction, and alignment adjustments. These bolt-in systems allow for easy caster adjustments for straight-line stability. The Stage 3 kit is the perfect starting point for achieving top performance in drag F-Body cars, often used in single-digit vehicles. UMI's Stage 3 Includes: * Tubular dual tube K-member * Tubular adjustable race lower A-arms with rod ends * Tubular adjustable race upper A-arms with rod ends * Grade 10.9 hardware with Ny-lock nuts Product features: * Heavy-duty K-member with dual tube construction * Tubular upper and lower A-arms with race-quality rod ends * Wide flanged aluminum step bushings assembled in A-arms * Premium upper and lower ball joints installed * 33 lbs. of front-end weight savings * Chromoly A-arms save an additional 1 1/2 lbs. * Works with factory steering rack * Direct bolt-in replacement, no welding
Not Yet Reviewed
$1,929.99
UMI Performance 1998-2002 F-Body LS1 Front End Kits (Street, Stage 2)
UMI Performance 1998-2002 F-Body LS1 Stage 2 front-end kits provide a solid foundation for your street car, making it ideal for drag strip use. They effectively combine weight reduction and strength with performance and comfort. The dual tube K-member is known for its durability, handling rough landings and street abuse while also protecting the oil pan. The lower arms feature poly bushings to absorb road noise, and the non-adjustable uppers guide the suspension on greaseable poly bushings. The A-arms are equipped with premium ball joints and help save an additional 8 lbs. of weight. UMI's K-member and A-arms are constructed from strong DOM tubing, precision-bent, CNC-notched, and welded in a jig for a robust base. Each kit is designed to work with factory motor mounts, polyurethane motor mounts, or UMI's solid billet aluminum motor mounts. They offer a direct bolt-in replacement, reducing front-end weight while maintaining street comfort and enhancing performance. UMI's Stage 2 kit includes: * Tubular dual tube K-member * Tubular street lower A-arms * Tubular street upper A-arms with polyurethane bushings * Grade 10.9 hardware with Ny-lock nuts Product features: * Heavy-duty dual tube construction K-member * Tubular upper and lower A-arms with greaseable polyurethane bushings * Premium upper and lower ball joints installed * 33 lbs. of front-end weight savings * Chromoly A-arms save an additional 1 1/2 lbs. * Compatible with factory steering rack * Includes new grade 10.9 A-arm mounting hardware * Direct bolt-in replacement, no welding required
Not Yet Reviewed
$1,789.99
UMI Performance 1993-1997 F-Body LT1 Front End Kits (Street, Stage 2)
UMI Performance 1993-97 F-Body LT1 Stage 2 front-end kits provide a strong foundation for your street car designed for drag strip use. They offer a balanced combination of weight reduction, strength, performance, and comfort. Known as the strongest in their class, the dual tube K-member can handle wheel stand landings and street abuse while minimizing weight and protecting the oil pan. The lower arms feature poly bushings in the straight strut portion to absorb road noise, while the non-adjustable uppers guide the suspension using greaseable poly bushings. Both upper and lower A-arms are assembled with premium ball joints, saving an additional 8 lbs. UMI's K-member and A-arms are constructed from durable DOM tubing, which is precisely bent, CNC-notched, and welded in a jig to create a solid base. The included K-member is compatible with factory motor mounts, polyurethane motor mounts, or UMI's popular solid billet aluminum motor mounts. Stage 2 kits are a direct bolt-in replacement that removes front-end weight while maintaining street comfort and enhancing performance. UMI's Stage 2 includes: * Tubular dual tube K-member * Tubular street lower A-arms * Tubular street upper A-arms with polyurethane bushings * Grade 10.9 hardware with Ny-lock nuts Product features: * Heavy-duty K-member with dual tube construction * Tubular upper and lower A-arms with greaseable polyurethane bushings * Premium upper and lower ball joints installed * 33 lbs. of front-end weight savings * Chromoly A-arms save an additional 1 1/2 lbs. * Works with factory steering rack * Includes new grade 10.9 A-arm mounting hardware * Direct bolt-in replacement, no welding
Not Yet Reviewed
$1,789.99
UMI Performance Front Bump Steer Adjuster Kits
The suspension's job is to ensure that your vehicle stays as level and smooth as possible. UMI Performance front bump steer adjuster kits are designed to improve handling and straight line stability by decreasing or eliminating toe change during suspension travel. These simple bolt-on kits allow you to relocate the outer tie rod end, with no spindle drilling required. The 6061 T-6 aluminum hex is hard black anodized for corrosion protection and lightweight strength. Included in the kits are race-quality rod ends, jam nuts, spacers, and locking hardware.
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$169.99
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$299.99
UMI Performance Extended Length Lower/Adjustable Upper Control Arm Kits
UMI Performance extended length lower/adjustable upper control arm kits tackles the factory wheelbase problem. The extended-length (5/8 in.) lowers reposition the wheel properly in the wheelhouse, while the extended length rod end-adjustable uppers control pinion angle and lateral location. The kits are available with a durable red or black powdercoat finish. Choose a set designed for your vehicle in the color you prefer.
Not Yet Reviewed
$619.99
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$669.99
UMI Performance Rear Toe Rods
These UMI Performance rear toe rods play a crucial role in controlling the camber alignment of the rear end, preventing the tire from moving inward or outward during suspension load. Factory toe rods are often made from flimsy stamped steel with soft rubber bushings that can cause deflection, leading to erratic handling, poor traction, and possible rear tire wear. Replacing these factory arms with heavy-duty toe rods can significantly improve the stability of the suspension, traction, and braking performance. UMI Performance rear toe rods are manufactured from 1" x 2" rectangular tubing and fully TIG welded for maximum strength. They are equipped with fluted, greaseable, and low deflection polyurethane bushings from . Installation is a breeze, with these toe rods being a direct bolt-on using OEM hardware. With a durable powder coat finish and made in the USA, these toe rods are sure to enhance the performance of your vehicle.
Not Yet Reviewed
$119.99
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$399.99
UMI Performance Adjustable Trailing Arms
UMI's adjustable trailing arms with Roto-Joints are a valuable addition to enhancing the handling of your application. The UMI Roto-Joint provides articulation similar to a rod end while also offering the comfort of a cushioned bushing. Constructed with strong 1-1/2 in. heavy wall tubing and a laser cut bracket, these trailing arms feature on-car adjustability with an easy and secure adjustment process. They are designed for street, road race, auto-x, and light drag race applications, making them versatile and performance-oriented. Features: * Heavy duty 1/4 in. CNC laser cut mounting brackets * UMI built chromoly on-car adjuster * Exclusive Roto-Joint for awesome performance * Race proven and track tested * 100% Made in Philipsburg, PA-USA
Not Yet Reviewed
$279.99
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$309.99
UMI Performance 1993-2002 GM F-Body Road Race Front Lower A-Arm Kits
UMI Performance 1993-2002 GM F-body road race front lower A-arms kits will provide a rock-solid foundation for your road race, autocross, or corner carving 4th Gen. The front lower A-arms fully gusseted box tubing construction, while appearing robust, affords a five pound weight savings per set over factory lower A-arms. The tube adapters for mounting rod ends are crafted from 4140 CrMo steel to enhance thread durability and guarantee years of trouble-free use. These A-arms have double shear sway bar mount tabs with end link set and are designed to work with factory K-members, UMI K-members, and most aftermarket K-members. Product features: * Construction 0.120 in. wall mild steel box tubing * Available in durable red or black powdercoat finishes * 1/2 in. diameter x 1 1/4 in. width racing coilover mount * 5 lbs. lighter than factory A-arms * Double shear sway bar mount with end link set included * Pedestal mount fits DeCarbon, Koni, Bilstein and aftermarket GM T-bars * Nominal 2 degree caster increase potential * Double gusset design for flex-free operation * TIG-welded 4140 CrMo threaded tube adapters * Premium ball joints installed * Race quality high misalignment rod end on vertical mount * CNC machined ball joint cups, tubing radiuses and mounting plates * Lower A-arms use OEM hardware or UMI hardware kit that includes Grade 10.9 bolts, washers, and lock nuts
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$749.99
UMI Performance Rear Adjustable Trailing Links
UMI Performance rear adjustable trailing links offer a high performance way to stiffen the flimsy factory rear suspension on your vehicle. These arms will be equipped with UMI's exclusive Roto-Joint or race quality rod ends, a chromoly on-car adjuster, heavy-duty tubing, and precision, laser-cut brackets. They are available with a durable gloss black or UMI red powdercoat finish for lasting good looks. Improve suspension stiffness and handling; select the rear adjustable trailing links with your preferred color designed for your vehicle.
Not Yet Reviewed
$239.99
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$289.99
UMI Performance Rear Adjustable Upper Control Arms
UMI Performance adjustable upper control arms feature CNC-machined 0.250 in. mild steel, 4140 chromoly threaded tube adapters, and a high-strength, 4140 chromoly, heat-treated, 1.000 in. solid adjuster. With UMI Performance adjustable upper control arms, you can easily make pinion angle adjustments in the garage or at the track--it's as simple as loosening two nuts! Simply turn UMI's unique chromoly on-car adjuster with the control arms on the car to quickly lengthen or shorten the control arms. Pinion angle adjustments are a must when wanting to lower your track 60 ft. times, increase traction, and reduce unwanted wheel hop. Their PTFE-lined spherical rod end design allows for "bind-free" operation, making them great upgrades for both your track and autocross-driven vehicle. Additional features include: * On-car adjustability * 3/4 in. hard chrome plated PTFE/KEVLAR® self-lubricating race rod ends * Precision CNC-machined and fully welded * CNC-machined 6061 aluminum step bushings * Durable powdercoated finish
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$149.99
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$319.99
UMI Performance Front Non-Adjustable Lower A-Arms
A lightweight setup capable of handling everyday street abuse! UMI Performance front non-adjustable lower A-arms remove 5 1/2 lbs. from of the front of your vehicle, while adding increased ride quality and reducing bushing deflection. These suspension control arms are supplied with new greaseable ball joints installed, polyurethane or Delrin® bushings, and sway bar mounting provisions. The A-arm replacements are fabricated using 1.250 in. drawn-over-mandrel tubing and CNC-machined ball joint holders. They feature both MIG and TIG welding for the utmost in product strength. Order the pair recommended for your vehicle. Additional features: * 1.250 in. x 0.120 in. mild steel tubing * Shock mounts are CNC-machined from 0.188 in. steel plate * Supplied fully assembled and ready to install * Durable black or red powdercoat finish * Use OEM hardware
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$669.99
UMI Performance Rear Upper Control Arm Mounts
These UMI Performance rear upper control arm mounts replace the stock control arm mount that attaches the rear upper control arm to the vehicle chassis. UMI Performance rear upper control arm mounts work great when the factory mount is too rusted to reuse or when you're installing a 12-bolt, 4-link setup into a 3-link equipped vehicle. These replacement brackets are CNC-machined from a 0.188 in. thick steel plate and are precision-bent.
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$79.99
UMI Performance Stage 4 Front Suspension Packages
UMI Performance Stage 4 front suspension packages are direct bolt-in replacements--no welding is needed. These kits will give your vehicle a sturdy understructure, while providing weight reduction, performance, and comfort. The dual tube K-member and tubular upper and lower race A-arms and rod ends can take any abuse you can dish out. Poly bushings on the straight strut portion absorb road noise, while the non-adjustable uppers guide the suspension on greasable poly bushings. Additional features: * Premium upper and lower ball joints installed * Double adjustable Viking shocks feature 361 possible valving combinations * Height adjustment from 0 to 2 in. lowering * 550 lbs./in. front springs * 33 lbs. of front-end weight savings * Chromoly A-arms save an additional 1.5 lbs. * Work with factory steering racks * Grade 10.9 hardware with Nyloc nuts * Thrust bearing and spanner wrench
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$2,569.99
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$2,749.99
UMI Performance Tubular Rear Sway Bars
UMI Performance lightweight, 1 in. diameter tubular rear sway bars are CNC-bent and feature a UMI tried and true CNC-machined clamping system that allows for differential housing mounting on different diameter housings. Their chassis and differential housing mounts reduce the bind normally associated with factory-style bars. They are bolt-on but may be welded for added security. Plus, the house-made hex adjuster allows for preloading of the bar when used for drag racing, so that you launch straight. Whether you're into street, auto-x, road racing, or drag racing, UMI Performance tubular rear sway bars offer the craftsmanship and performance you want for your vehicle. Features include: * Designed to clear all rear-ends--10-bolt, 12-bolt, 9 in., M9, S60, and others * Heavy-duty, race-style chromoly spherical rod ends with PTFE race * High-strength 4140 chromoly zinc plated U-bolts * CNC-machined sway bar mounts with grip teeth and reinforcement gussets * 1 in. billet steel hex adjuster for extreme strength * Premium greasable polyurethane bushings * Durable, long-lasting powdercoat
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$199.99
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$519.99
