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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 bolt-in Viking rear coilover kits allow full ride height, spring rate, and damping adjustability. The double shear upper mount is a direct bolt-in and holds a true 2.5 in. diameter coilover spring. The FEA designed lower bracket bolts in using the standard shock mounting hole as well as an additional reinforcement hole. Drilling one 3/8 in. hole per side is required to complete installation. The coilover kits utilize Viking shocks that are 19-way adjustable in both compression and rebound to ensure the perfect setting for every application. Viking shocks are fully rebuildable. The 2.5 in. diameter coilover springs are available in 14 in. long, 110 lb. spring rate for drag use; 14 in. long, 125 lb. spring rate for street use; and 12 in. long, 150 lb. spring rate for autocross and road race applications. The coilover kits have been tested with 1.5 in. diameter UMI trailing arms, as well as UMI's 22mm sway bar and 32mm drag anti-roll bar. Fitment with other brand sway bars and larger diameter control arms is not guaranteed. Please contact UMI for additional information regarding fitment. Key features: * Brackets manufactured entirely from 3/16 in. mild steel * Laser-cut brackets for consistency and a precise fit * TIG-welded for superior strength and clean looks * Powdercoated brackets for a long lasting finish * Viking double-adjustable shocks offer 19 compression and 19 rebound adjustments * 3 spring rate options, depending upon application * Bolt-in design * No welding required * Spacers included for use with control arm relocation brackets
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$909.99
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$1,805.99
UMI Performance bolt-in Viking front coilover kits offer a true 2 1/2 in. racing coilover setup for your ride. UMI's Viking Worrier shocks are double adjustable and easily change from street use to high rebound force for race use. By increasing the rebound force, you can eliminate pitch and roll while making the car stay flat during transitions. Viking Worrier shocks offer a wide range of compression dampening and can be dialed in from a comfortable cruise setting all the way up to full race settings. The kits are available with different spring rates; order the kit designed to fit your vehicle. Additional details: * Viking shocks use upper/lower bearings, eliminating polyurethane and rubber, for crisp response and great reliability * Adjustable compression * Adjustable high rebound Worrier AT valving * CNC laser-cut brackets with black powdercoat finish offer precision fit * Direct bolt-in with no welding, minor trimming required
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$764.99
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$959.99
For easier adjustments, add UMI Performance thrust bearing kits. Designed for Viking coilovers and UMI coilovers that use Viking shocks, these kits offer the ability to make height adjustments effortlessly. The thrust bearing kits are designed to be placed between the spring and the spring seat attached to the coilover shock. Tune-up your coilovers with UMI Performance thrust bearing kits.
( 17 )
$25.00
UMI Performance coilover conversion brackets are used to provide a double shear upper attachment point for a true 2 1/2 in. racing coilover shock and spring. Most applications will use an industry standard 7 in. stroke double rod end shock and 12 in. x 2 1/2 in. diameter coilover spring. The bracket bolts to the upper A-arm mount in order to properly locate the unit for welding. Prototyping was completed using Afco Pro-Tour Elite shocks; your brand may require additional modification. Heavy fabrication is required, as the 4054 kit is intended for use on high-end, high performance Pro-Touring builds. Order the conversion brackets recommended for your vehicle.
Not Yet Reviewed
$199.99
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$349.99
Upgrade your 1978-96 GM B-Body with a UMI Performance bolt-on rear coilover kit, complete with both ride height and damping adjustability. The heavy-duty, laser-cut steel brackets are JIG-welded to ensure a great fit on factory GM B-body axles. No welding is required for installation. Choose 200 in.-lb. spring rate for sedans and 250 in.-lb. for wagons. Each kit as sold provides a sleek, lowered look. Additional product details: * Bolt-in double shear upper and lower mounting system (no welding required) * Upper mount requires simple drilling with a common 3/8 in. bit * Includes Viking double adjustable shocks (19 compression and 19 rebound settings) * Shock angle designed to clear most exhaust systems * Included take-up springs stabilize coilover when car is lifted * Allows proper ride height lowering from 1 in. lowered to 3 in. lowered
Not Yet Reviewed
$1,089.99
UMI Performance 1964-72 GM A-Body rear coilover kits allow for ride height adjustments ranging from a -2 in. to -3 in. drop, along with spring rate and damping modifications. Each kit includes a reinforced upper mount that bolts directly in place (requiring one additional hole to be drilled) and accommodates a true 2 1/2 in. racing coilover with a double-shear mount. It also features FEA-designed reinforced lower brackets that bolt directly over the stock rear lower control arm mounts and utilize the existing lower shock hole(s). The 2-hole trailing arm height adjustment enables fine-tuning of the instant center location for drag launches or autocross/road race rear steer tuning. Viking Performance shocks offer 19-way adjustments for both compression and rebound. The 2 1/2 in. coilover springs come in various rates suitable for drag use, street driving, and autocross/road racing. Please note that these kits are intended for a -2 to -3 in. Pro-Tour style lowering and are compatible only with factory GM axle housings. They may not fit aftermarket housings such as Quick Performance, Currie, or Moser. Optional add-ons like thrust bearings and a spanner wrench are recommended for easier adjustments. A shock tower brace for additional chassis reinforcement is also available separately. The kits are meant solely for lowering purposes, and welding may be necessary for drag use on vehicles running 10.50 or faster. Product features: * Ride height adjustment from -2 in. to -3 in. drop * Spring rate and damping adjustments * Trailing arm adjustment for fine-tuning of instant center * Reinforced upper mount with direct bolt-in installation * Holds a true 2 1/2 in. racing coilover with double-shear mount * FEA designed reinforced lower brackets bolt directly over stock rear lower control arm mounts * 2-hole trailing arm height adjustment for fine-tuning of instant center location * Viking Performance shock with 19-way adjustable compression and rebound * 2 1/2 in. coilover springs available in different rates * 100 percent designed, manufactured, and raced out of Philipsburg, PA * 3 spring ratings available * Viking Warrior shocks * 19 compression and rebound adjustments
Not Yet Reviewed
$1,069.99
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$1,805.99
UMI Performance Competition coilover kits are built and proven to perform. Developed in cooperation with Sam Strano, the 14-time national SCCA autocross champion, these packages feature an AFCO-built aluminum body, plus monotube dampers with Strano-tuned valving that offers race-winning performance, while still providing an awesome street ride. They are rebound-adjustable, with a 40-position digressive rebound curve designed for competition body and weight transfer control. UMI Competiton coilover kits are available in front, rear, or complete (front and rear) packages. The kits include coilover shocks, springs with proper rates, fabricated bolt-in mounting brackets, hardware, and thrust bearings for each shock. UMI Performance Competition coilover kits feature: * UMI/Strano specific competition valving * Front upper fabricated shock mount removes rust-prone GM rubber shock mount * Front shocks assembled with progressive rate bump stops * Double bearing shocks for crisp response, zero deflection, and high reliability * 125 psi monotube provides quick reaction and fade-free performance * Medium-firm fixed compression * Balanced for use with UMI or Strano 35mm/22mm sway bars * Ride height adjustment range from stock to 2 1/2 in. lowering
Not Yet Reviewed
$1,154.97
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$2,464.94
UMI Performance Viking complete coilover kits are now available for a wide range of GM G-Body cars and trucks from the 1970s and '80s. Selection is made easy! UMI has combined its most popular front and rear kits into one convenient package suitable for lowering your vehicle up to 2 in. The Viking hybrid front coilover kit (with 450 lbs.-in. spring rate), combined with UMI's race-proven rear bracket system (125 lbs.-in. spring rate) covers street, strip, and handling applications with ease. Add thrust bearings and spanner wrench to complete your purchase. Kits are available with a standard or relocation rear bracket.
Not Yet Reviewed
$1,499.99
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$1,699.99
UMI Performance coilover bracket kits are a complete mounting solution for your factory GM G-body axle. They bolt in using the standard trailing arm mounting hole, plus an additional reinforcement hole normally used by the standard rear shock. These race-proven lower brackets feature a multi-position design to allow further fine-tuning of ride height and shock location (3/4 in. intervals). Each kit also features upper reinforcement tabs to distribute the load from the T-bar, as well as complete upper and lower hardware. UMI coilover brackets require no cutting, and optionally allow returning your car to stock at any time. Order the kit designed to fit your vehicle. Features, items, and specs: * 1/2 in. x 1 1/4 in. mount fits most standard racing shocks * 3/16 in. mild steel construction * Laser-cut for consistency and a precise fit * Powdercoated black for added durability and a lasting finish
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$149.99
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$289.99
UMI Performance extended coilover mounts are used to mount a true racing coilover. These weld-in upper coilover mounts locate a 2 1/2 in. racing coilover in the proper spot for use with UMI's adjustable lower arm or most aftermarket coilover compatible arms. The kits feature strong 3/16 in. laser-cut construction, quick-align mounting bolt, a 5 1/2 in. reinforcement ring, and templates for trimming the frame. UMI offers their Afco and Viking specific shocks and springs as direct bolt-in options. Cutting and welding is required, and installation by an experienced fabricator is recommended. This competition-specific kit is designed, manufactured, and raced out of Philipsburg, PA. Features include: * Weld-in upper extended coilover mount * Strong laser-cut 3/16 in. construction * Quick-align bolt system includes sleeves for 1 in. and 1 1/4 in. width shocks (1/2 in. bolt diameter) * 5 1/2 in. reinforcement and trim ring included * Cutting template included * Professional installation recommended; heavy fabrication is required * Intended for competition use
Not Yet Reviewed
$229.99
UMI Performance suspension lowering kits are designed to give your ride a lowered stance, with improved handling and control. Packaged with shocks and/or struts and springs, UMI utilizes premium CrSi wire wound into different spring rates to fit various applications for daily driving, street cruising, carving corners, and even light racing use. You can provide your vehicle with a different attitude and performance using a UMI suspension lowering kit.
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$1,029.99
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$2,239.99
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
Whether you're servicing coilovers or Roto-Joints, UMI Performance has the specific spanner wrenches to assist you in your work. Their offerings include quality-made tools for adjustment and disassembly of large and small Roto-Joints, as well as, designs that will make on-car height adjustments of Viking and UMI rear coilovers easier. Choose tools defined for your job from the selection of UMI Performance spanner wrenches.
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$19.99
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$50.00
UMI Corner Max front lower A-arms are designed from the ground up to be the best performing stock mount A-arm upgrade on the market. Strong yet lightweight, they feature a removable lower mounting system to permit spring or shock changes at the track without separating the ball joints. The ball joint cup is moved forward the proper amount to add up to 4 degrees caster potential—and is loaded with either high-quality Howe standard height or premium Howe +1/2 or +3/4 in. tall ball joints. The double shear coilover mount accepts race industry standard 1/2 in. rod end shocks, and comes with spacers for all popular models. Also included is a double shear sway bar mount and corresponding end link. Order the pair recommended for your vehicle. Product features: * Camber curve and roll center height are improved to yield incredible front-end grip * Coilover-only design saves weight over spring bucket versions * A-arms enhance steering feel and straight line stability * 1.500 in. DOM steel tubing construction * Includes Delrin® bushings for smooth suspension travel and decreased deflection
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$799.99
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$999.99
UMI Performance shock mounts prevent the common issue of lower rear shock mount binding. They're a bolt-in shock relocator kit that rotates each shock 90 degrees, while leaving them in the same location. The TIG-welded lower bracket holds the shock in double-shear so that it's able to pivot freely about the lower bolt. UMI Performance shock mount kits provide your vehicle with improved structural integrity and unrestricted movement. Refer to application tab for fitment.
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$259.99
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$299.99
UMI Performance competition shock mounts are upper double shear brackets intended for use with 1/2 in. bearing, racing-style shocks. These powdercoated steel brackets allow for removal of the rust-prone upper mount unit (and associated rubber biscuit), converting it to racing-style double shear. UMI recommends using these mounts with UMI Afco shocks, Viking shocks, and with most other standard-style racing shocks.
Not Yet Reviewed
$119.99
UMI Performance control arm relocation brackets reposition your instant center by changing your lower control arm angle for improved traction. UMI Performance control arm relocation brackets lower the rear of the control arm by up to 3 in. and are a must for all lowered vehicles to correct lost suspension geometry. These relocation brackets have two settings to allow the lower control arm to be lowered either 2 in. or 3 in., depending on your preference. Settings are placed in a correct pattern that will allow for the use of all OEM control arms or any aftermarket control arm (brackets do not require a longer control arm).
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$229.99
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$259.99
UMI Performance Stage 2.5 handling kits bring you the best of both worlds—combining UMI's Stage 2 handling kit with four-corner Viking coilover ride height adjustability. These Stage 2.5 handling kits feature UMI's most popular combination of front and rear springs, along with all the necessary components and hardware needed to transform your GM vehicle for improved handling, ride quality, and an impressive stance. Ride height is adjustable from stock to 2 in. below stock ride height, and the Viking shocks feature 19 settings in both compression and rebound. More than a dozen kits are available, with numerous options. Select the model recommended for your vehicle. Stage 2.5 handling kits include: * Tubular lower front A-arms with polyurethane bushings * Upper front A-arms with Delrin© bushings * Viking coilover kit * Heavy-duty front sway bar with new bushings and end-links * Front upper and lower race-quality hardware kit * Solid heat-treated rear sway bar * Tubular rear lower control arms with polyurethane bushings * Tubular rear upper control arms with polyurethane bushings * Tubular frame braces with hardware * Replacement rear-end housing bushings * Rear control arm race-quality hardware kit * UMI bolt-on rear coilover kit * Thrust bearing kit (x 2) * Spanner wrench kit Note: Rear coilover kit fits GM axle housing only. Aftermarket axle housing fitment is not guaranteed.
Not Yet Reviewed
$2,579.99
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$4,649.99
UMI Performance Stage 5 front suspension packages provide a solid foundation for your strip car with occasional street duty. UMI's dual tube K-member is known as the strongest in its class—and can withstand wheel stand landings and street abuse while still shaving weight, as well as protecting the oil pan. The rod end upper and lower A-arms reduce friction and unsprung weight while ensuring super-quick weight transfer. These K-members and A-arms are built from strong DOM tubing, precision-bent, CNC-notched and welded in a jig to form a solid base. Upper and lower A-arms are assembled with PTFE-lined race quality rod ends and premium ball joints. The included adjustable A-arms offer strength, weight reduction, reduced friction, and alignment adjustments when needed. Increased caster for straight-line stability can be achieved very easily with this bolt-in system. Stage 5 includes Viking A226 bearing-mounted front coilovers with double adjustable shocks that allow ride height, compression, and rebound adjustment. The A226s feature bearing ends in place of polyurethane for friction reduction, improved response, and longer lasting performance. Ride height adjustment is accomplished with the included spanner wrenches and thrust washers; while the compression and rebound adjusters are clicked by hand—and feature a total of 361 possible valving combinations. The included springs are 300 lbs./in. and work perfectly on drag race applications and vehicles with front-end weight reduction. The UMI Performance Stage 5 front suspension package is found under many F-body drag cars with single-digit ETs. Package features include: * Heavy-duty D-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 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 1.5 lbs. * Works with factory steering rack * Direct bolt-in replacement, no welding
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$2,749.99
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
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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$599.99
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$799.99
UMI Performance tubular K-members instantly remove 25 lbs. from the front of your vehicle, while maintaining strength for streetability and daily use. UMI Performance tubular K-members have been designed to handle everything from drag racing to daily driving and even autocross. Their dual tube center section adds increased strength over the competitors' designs, making them far superior and able to handle everyday stress and abuse. Additional front-end adjustment can also be achieved with these K-members. The lower A-arm slots feature a 1/2 in. adjustment built in and will work with the stock and any aftermarket A-arm setup. The front and rear A-arm slots also feature additional bracing to withstand hard side loads and extreme pressure. These tubular K-members also feature integrated motor mounts, eliminating the stock cast iron mounts for maximum weight savings. Additional features include: * Main center tube constructed from 1.500 in. x 0.120 in. seamless steel tubing * Additional cross braces use 1.250 in. x 0.120 in. seamless steel tubing * TIG and MIG-welded construction for superior strength * Front and rear A-arm mounts CNC-machined and fabricated from 0.188 in. thick steel * Rear A-arm mounts gusseted to withstand extreme side loads and pressure * Dual tube center section adds increased strength over any competitor's design * All mounting plates are CNC-machined to ensure hole-to-hole accuracy * Factory locator pins included for easy installation and exact fit * Completely fixture-welded to ensure factory fitment with no grinding or cutting
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$669.99
UMI Performance Stage 3 handling kits are designed to help you achieve a high level of performance pro-touring handling capabilities, while not compromising the comfort of your everyday commute. They deliver precision steering, as well as excellent handling and balance, with superior-quality parts components you won't find in other handling kits. Kits include the following features: * Increased spindle height by 1/2 in. via tall upper ball joints for improved camber gain and a better contact patch. Works nicely in conjunction with lowering springs * Upper A-arms add caster for improved steering feel and straight line stability * Lower A-arms feature UMI-built Delrin bushings and accept standard springs or coilovers * 1.25 in. front sway bar for flat cornering, CNC-bent from 4140 balanced with 1 in. solid heat-formed rear sway bar * Shocks feature monotube construction and are designed and tuned for optimum ride quality, combined with responsive handling * UMI springs feature ultra premium CrSi material with linear rates front and rear for consistent handling * Rear trailing arms feature poly and roto-joints, as well as adjustable uppers for setting pinion angle and rear lateral location * Roto-Joints allow for smooth articulation for improved handling and less bind
( 1 )
$3,369.99
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$3,628.99
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
Not Yet Reviewed
$749.99
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