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UMI Performance Stage 2 handling kits will make any classic cruiser feel like a modern day muscle car! They are designed to bring you superior ride quality and improved handling, while giving you the lowered, aggressive stance you're looking for. These kits include everything you need to rebuild the suspension on your classic ride, such as upper and lower front A-arms, heavy-duty UMI sway bars with new end links, greaseable bushings, Bilstein HD shocks, UMI lowering springs, rear tubular upper and lower control arms, replacement rear end housing bushings, and heavy-duty tubular frame braces. UMI Performance Stage 2 handling kits are made of superior-quality materials to ensure long-lasting durability and performance. These UMI Performance Stage 2 handling kits are perfect for the weekend warrior looking to go for a back road cruise, perhaps hit the drag strip, or even an Auto-x.
( 4 )
$3,059.99
UMI Performance stock height springs are designed to add modern handling and a crisp ride while maintaining the factory muscle car appearance. Wound from premium chrome silicon wire, they feature linear rates for consistent handling characteristics with an increase in stiffness to reduce body roll and eliminate the floating feeling so common with factory suspension. Their ride height is engineered to be level on cars equipped with standard small block Chevrolet, Pontiac, aluminum head/intake big block Chevy, or LS engines (lightened cars may require spring trimming). Full-weight big block applications will have a 1/4 in. nose-down rake. Features include: * Designed to maintain the factory muscle car appearance with today's modern feel * Consistent rates and the best materials so your car sits properly for years to come * Linear spring rates provide a firm, yet comfortable, ride and incredible handling * No more floating feeling * Suitable for Pro-Tour, autocross, corner carving, and general cruising * Manufactured in the USA
( 36 )
$169.99
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$349.99
UMI Performance front sway bars are designed to reduce body roll and under-steer and increase corning capabilities, resulting in a more balanced suspension. These front sway bars are more rigid than the factory originals and will bolt directly in place with no modifications. Each kit includes new Energy Suspension end links and greaseable sway bar bushings with new zinc plated clamshells. Nearly two dozen models are available for vehicles from 1963 and up; order the sway bar recommended for your application.
( 100 )
$242.99
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$299.99
UMI Performance sway bars are designed to reduce body roll and understeer and increase cornering capabilities, resulting in a more balanced suspension. The front sway bar is more rigid than the factory model and comes complete with new polyurethane end links and greaseable sway bar bushings. The rear sway bar is supplied with new Grade 8 mounting hardware and locknuts. UMI Performance sway bars are manufactured from 4140 chromoly steel—and formed as one piece to ensure maximum strength and performance. Each rear sway bar is heat-treated and heat-formed to maintain longer memory than a cold bent bar, while the front sway bar is CNC-bent for a precise and accurate fit every time. Order the kit recommended for your vehicle.
( 72 )
$356.82
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$370.62
Lower your car properly with UMI Performance lowering springs. The front springs are wound from 5160 chrome silicon wire, while the rear springs are made from 9254 chrome silicon. The linear spring rates of each provide a firm but comfortable ride with exceptional handling. Suitable for Pro-Tour, Autocross, and general cruising, these lowering springs are finished with a tough black powdercoat and are available for the front, rear, or in kits with both. Order the parts designed for fitment with your vehicle's suspension. Not all springs are alike—the proof is UMI Performance lowering springs.
( 139 )
$149.99
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$619.99
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
$4,649.99
UMI Performance solid rear sway bars are designed to reduce body roll and under-steer and increase corning capabilities, resulting in a more balanced suspension. UMI Performance solid rear sway bars also are excellent at keeping your vehicle level and straight during those hard launches. These sway bars are manufactured from 1 in. solid high-carbon steel that's heat-treated and formed as one piece to ensure maximum strength and performance.
( 114 )
$159.98
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$429.99
UMI Performance shock tower braces make a great beginning for modifying your favorite ride. These braces positively connect your front right and left shock towers together for firmer handling and improved steering response. Constructed in the USA, UMI shock tower braces are available in DOM mild steel tubing with CNC-machined mounting plates. Or, if you're worried about adding front end weight, choose UMI's just as strong but lighter weight 4130 chromoly steel tubing braces. Both choices are given a brilliant and durable powdercoat finish in several colors. Beef up your chassis and get ready to hit the winding roads with UMI Performance shock tower braces.
( 52 )
$149.91
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$159.99
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
( 68 )
$149.99
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$249.99
The more power your ride makes, the better the chance of bending or breaking your rear control arm mounts. Beef up the upper and lower front control arm mounts on your classic with UMI Performance control arm reinforcement brace kits. These tubular reinforcements tie the upper and lower control arm mounts together for added strength and driving performance. Manufactured from DOM steel and TIG-welded, these trailing arm mount braces are adjustable for a perfect fit. Grade 8 hardware, nuts, and washers are included for a hassle-free install. Buy quality for your American-made muscle--UMI Performance control arm reinforcement brace kits.
( 28 )
$143.36
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$159.99
UMI Performance 1970-81 GM F-body front upper/lower A-arm kits are perfect for the F-body enthusiast seeking to improve the performance and appearance of their front suspension. These direct bolt-in kits feature caster relocation of both the upper and lower ball joints to enhance steering feel and improve high-speed stability. Features and benefits: * Spindle pin location remains unchanged, so fender clearance is like stock * Laser-cut UMI reinforcement plates add a great appearance and excellent strength * Chromoly offset cross shaft upper to reduce number of shims required * 5 to 7 degrees of total positive caster. 0 to 2 1/2 degrees of negative camber * Upper ball joint moved rearward to add 3 to 4 degrees caster potential * Lower ball joint relocated forward to increase caster 2 degrees which improves steering feel and straight line stability * Upper a-arm assembled with UMI-built Delrin® bushings for crisp steering response * Upper and lower a-arms built from USA-made DOM steel tubing * Heavy-duty spring bucket accepts factory and aftermarket coil springs * Spring bucket is compatible with popular hybrid coils, such as Viking and QA1 * High-quality polyurethane bushings and bump stops provide a crisp yet comfortable ride * Double shear swivel sway bar mounts and hardware work with UMI sway bars and most other factory eyelet-style sway bars * Available in red or gloss black powdercoat
Not Yet Reviewed
$1,196.99
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$1,329.99
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
( 10 )
$1,069.99
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$1,805.99
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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$699.97
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$729.99
Say goodbye to leaving the line sideways with UMI's rear drag sway bars. These kits are designed to get your vehicle consistently leaving the line straight, eliminate torque steer, and drastically improve 60 ft. times. The included adjustable end links allow vehicle preload to be set for straight launches. UMI's end links feature heavy-duty chromoly rod ends, which have a hard chrome plating and a PTFE self-lubricating race. The end links attach to the drag bars using 5/8 in. Grade 8 bolts and locknuts. These heavy-duty rear drag bars attach to the axle tubes using high-strength 4140 chromoly U-bolts, 3/16 in. thick fabricated mounts, and Energy Suspension bushings. The fabricated bushing mounts feature CNC-machined teeth to prevent sliding on the axle. Unlike some competitors' designs, UMI's sway bar mounts also feature gussets welded on each end to prevent the brackets from spreading while tightening.
( 5 )
$529.99
UMI Performance coil spring spacers are designed to allow you to achieve that perfect stance or prevent tire rub. They offer an easy way to fine tune the height of your vehicle with no cutting, welding, or drilling required. UMI Performance coil spring spacers are manufactured from zinc coated steel, are available in different thicknesses, and may be safely stacked to suit your specific vehicle application.
( 1 )
$9.99
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$39.99
UMI Performance double adjustable lower control arms feature 100 percent TIG-welded fabrication using drawn-over mandrel tubing. UMI Performance double adjustable lower control arms also have spherical bearing rod ends, which offer "bind-free" operation by letting the suspension articulate correctly when high handling is a concern. These control arms also work great as solid bushing drag race control arms with easy, built-in adjustment. Quick and easy on-car adjustments can be made, if needed, with a simple turn of the wrench. When you are looking for maximum performance from your vehicle, you can't go wrong with this setup. Additional features include: * 1.250 in. x 0.120 in. steel or chromoly tubing * 4140 chromoly threaded tube adapters * 3/4 in. hard chrome plated, PTFE/KEVLAR® self-lubricating race rod ends * CNC-machined 6061 aluminum step bushings * On-car adjustability using right and left hand threads * Durable powdercoated finish
( 13 )
$399.99
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
( 9 )
$519.99
UMI Performance Road Race K-Members are designed for serious racers who expose their vehicles to more stress than any street cars will ever experience. Using an additional 1.000 in. of tubing, UMI Performance Road Race K-Members tie together crucial areas. They weigh in at 3 lbs., more than UMI's standard version, but still maintain a much-needed weight savings.
( 3 )
$819.99
UMI's 2nd Generation F-body lower A-arms are perfect for the F-body enthusiast seeking to improve the performance and appearance of their front suspension. They feature caster relocation of the ball joint to enhance steering feel and improve high-speed stability. UMI Performance 1970-81 GM F-body front lower A-arm kits are built with heavy-duty spring buckets, premium ball joints, laser-cut reinforcement plates, double-shear sway bar end links, and either polyurethane or Delrin® bushings. Available with a red or black powdercoating, choose the color and bushings preferred. Additional features: * Ball joint relocation increases caster by 2 degrees for enhanced performance * 1.500 in. DOM steel tubing construction * Heavy-duty spring bucket accepts factory and aftermarket coil springs * Spring bucket is compatible with popular hybrid coils, such as Viking and QA1 * Laser-cut UMI reinforcement plates add a great appearance and excellent strength * High-quality greaseable polyurethane bushings and bump stops provide a crisp yet comfortable ride * Delrin® bushings enhance steering precision and reduce friction for all racing applications * Double shear, swivel-style sway bar mounts and hardware work with UMI's front sway bar and most other factory eyelet-style sway bars
Not Yet Reviewed
$729.99
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$789.99
UMI 2nd Gen F-body upper A-arms are key components of a great handling muscle car, adding 4 degrees of caster to improve steering feel and reduce wandering. Strong 1.250 in. DOM steel tubular construction and UMI-built greaseable Delrin® bushings ensure precision performance along with an enhance steering response, while the 4140 chromoly offset cross shaft enhances strength and permits camber adjustment to minimize shims required. Great for street and race use, UMI Performance 1970-81 GM F-body front upper A-arm kits are offered with stock or 1/2 in. taller-than-stock ball joints for improved cornering performance and lateral grip. They are also equipped with a polyurethane pancake-style bump stop for smooth rebound control and available in UMI red or gloss black powdercoat. Choose the preferred kit for your vehicle.
Not Yet Reviewed
$599.99
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$679.99
UMI Performance offers Street performance control arms for a wide range of vehicles—including many Chevrolet and GMC trucks from the 1970s and '80s. These replacement tubular control arms feature heavy-duty cross shafts, Delrin® bushings, and a host of other features. Product details: * Power Tour and daily driver proven * Accepts UMI lowering spring, factory springs and most other aftermarket springs * Heavy-duty tubular construction, yet still strong and light * Delrin® bushings ensure smooth suspension action and precise steering * Adjustable steering stops to fine-tune turning radius * Direct bolt-in * Increased caster improves steering feel and reduces wandering
( 1 )
$599.99
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$899.99
On Sale
UMI Performance Stage 1 handling kits are designed to bring you great ride quality and improved handling, while giving your musclecar the lowered, aggressive stance you want at an inexpensive price. These kits include heavy-duty UMI sway bars with new end links and greasable bushings, four Bilstein HD shocks, and a set of UMI 1 in. lowering springs. If you're looking to change the stance of your ride and get some added performance, look no further than these UMI Performance Stage 1 handling kits.
( 1 )
$1,499.99
$1,349.99
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.
Not Yet Reviewed
$39.99
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
( 1 )
$849.99
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$999.99
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