Availability
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.
( 97 )
$259.99
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$299.99
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.
( 134 )
$149.99
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$619.99
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
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.
( 7 )
$169.99
UMI Performance rear axle flip kits provide a cost effective way to drop the rear of your square-body truck 6 in. by relocating axle above the leaf springs. Designed for trucks equipped with 8.5 in 10-bolt axles, they include everything needed to do the job, including polyurethane bump stops. Constructed from steel and black powdercoated, the saddle brackets move the axle towards the back to keep the wheel centered in the wheel well, and the lower leaf plates feature laser-cut 1/4 in. steel clamped by heavy-duty U-bolts. Kit components include: * Two axle flip brackets * Two lower leaf mounting plates * Four 5/8 in. zinc plated U-bolts * Eight 5/8 in. hardened washers * Eight 5/8 in.-18 in. tall hex nuts * Two pancake bump stops * Two 3/8 in.-16 in. hex nuts * Two 3/8 in. lock washers
( 5 )
$149.99
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.
( 64 )
$49.99
UMI Performance tie rod adjusting sleeves have heavy-duty tie rod adjusters to eliminate the factory clamp-style design, making adjustments easy and hassle-free, while enhancing steering. UMI Performance tie rod adjusting sleeves are CNC-machined from 6061 aluminum hex, feature left and right hand threads for easy on-car adjustments, and are finished in a durable black anodized coating. These tie rod adjusters work with the factory tie rod ends with no modifications.
( 25 )
$59.99
UMI Performance replacement control arm bolt kits include all-new hardware for installing upper or lower rear control arms on your vehicle. UMI Performance replacement control arm bolts are Grade 8 bolts and are zinc plated.
( 99 )
$14.99
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$31.99
UMI Performance GM F-Body leaf spring traction bars work to improve forward traction and reduce or eliminate wheel hop. These traction bars bolt to UMI leafs or factory leafs with no modification. Dramatically improve performance without cutting, welding. or back-halfing your car. The kits are paired with UMI 2624 front mount to further enhance performance and traction. The 2624 mount includes the popular "Herb Adams mod" to improve instant center location. The traction bars are available in a red or black powdercoat. Features and benefits: * Enhanced forward traction and less leaf spring wrap * Reduce or eliminate wheel hop * Delrin bushings provide low friction movement * Includes fabricated front mount with "Herb Adams mod" relocation * Heavy-duty fabricated mount replaces factory leaf spring plate that are commonly bent * Traction bar mount welded directly to plate versus bolt-on * Adjustable bar length to tune ride quality vs. response * Works great for road race, autocross, and drag racing * Race-proven performance
Not Yet Reviewed
$779.99
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
Achieve the perfect stance with UMI Performance leaf spring lowering blocks for 2nd Gen Camaros and Firebirds (1970s and '80s). Lower your car an additional 3/4 in. or 1 in. to fine-tune the ride height. These suspension blocks are machined from 6061 T6 aluminum with a satin black finish. They include a factory compatible locating pin and heavy-duty U-bolts to facilitate installation. The lowering blocks are compatible with UMI 2620 leaf springs, as well as most other leaf springs with standard-style mounting. Sold in pairs.
( 1 )
$59.99
With modern high-grip tires, improved suspension, and big power, today's muscle car chassis need more help than ever. UMI Performance F-body frame rail braces improve chassis rigidity, reduce steering gear movement, and provide crisper handling. UMI pairs precision laser-cut brackets with strong tubing to reinforce the front frame sway bar mounting area. These direct bolt-in braces use existing hardware, require no cutting or welding, and are available in gloss black or UMI red. Features include: * 1.250 in. tubing * 3/16 in. laser-cut brackets * Race-proven * Requires no holes to be drilled. * Can be used with OEM sway bar bushings or aftermarket poly mounts * Installation time is approximately 20 minutes * Tested with factory sway bars and UMI sway bars * Check fitment for other aftermarket or custom sway bars
( 3 )
$159.99
Wondering how to retain factory shock absorbers on the lowered rear-end of your square-body truck? UMI Performance shock relocation kits provide the optimal solution. They include all the necessary hardware and feature a gloss black powdercoat finish. Go with a proven mounting solution for stock-length absorbers with the UMI shock relocation kit designed for your flip kit-lowered vehicle.
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$79.99
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.
Not Yet Reviewed
$9.99
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$39.99
UMI Performance single adjustable lower control arms are direct bolt-on replacements designed to minimize wheel hop and improve cornering, while lowering ETs. UMI Performance single adjustable lower control arms are constructed from a DOM mild steel tubing 1.500 in. o.d. x 0.120 in. wall and a 4130 chromoly threaded tube adapter. They are completely CNC-machined and fully TIG-welded for outstanding strength. UMI Performance single adjustable lower control arms feature reinforced spring perches and heavy-duty sway bar mounting points. Their high-quality, PTFE-lined spherical rod end allows for quiet, "bind-free" performance, making them great upgrades for both your track and autocross driven cars. The polyurethane bushings are designed to be bolted to the car chassis for quiet, comfortable operation. The control arms feature polyurethane bushings, zinc plated steel sleeves, and "on-car" greasable Zerk fittings. Additional features include: * QA1 3/4 in. hard chrome plated PTFE/KEVLAR® self-lubricating race rod end * CNC-machined 6061 aluminum step bushings with zinc plated steel sleeves * Powdercoated finish * Use OEM hardware
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$209.99
Good vehicle handling starts with proper shock absorber installation. UMI Performance shock installation hardware kits include all the parts you need for correct fitting of your Viking or AFCO shocks. Order the UMI Performance shock installation hardware kit designed to fit your vehicle.
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$11.99
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$15.99
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
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
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$399.99
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
UMI Performance solid motor mounts replace the factory rubber motor mounts, decreasing engine movement for maximal vehicle performance. These solid mounts bolt directly to the frame of the 1982-92 GM F-body and 1978-88 GM G-body, as well as many other 1974 and later GM V8 applications. Solid mounts are required to be used in conjunction with the factory clamshell. The centerline is 1 in. from the crossmember surface to the center of the hole; check your original part's dimensions before ordering. Solid mounts may not work with Oldsmobile V8-style clamshells. Additional features include: * 0.188 in. thick mild steel base plate * 1.000 in. o.d. x 0.250 in. wall thickness steel tubing * Fully MIG-welded * Durable powdercoated finish
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$109.99
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
$1,329.99
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$1,489.99
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's sway bar brackets are used to mount a sway bar on trucks not normally equipped with a front bar. These brackets are designed for stock ride height trucks, as well as those using drop spindles. The sturdy steel brackets are powdercoated to resist corrosion. Order the pair recommended for your vehicle application.
Not Yet Reviewed
$19.99
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$99.99
UMI 2nd Gen F-body adjustable upper A-arms are race-worthy components equally at home on the street. They add 5 to 6 degrees of caster to improve steering feel and reduce wandering. Their single adjustable rod end design allows for caster and camber adjustment with zero or minimal shimming, while the strong 1.250 in. DOM steel tubular construction and 4140 chromoly cross shafts give peace of mind when road racing, drag racing, or simply corner carving in the mountains. UMI Performance 1970-81 GM F-body front upper adjustable A-arm kits are offered with stock or 1/2 in. taller-than-stock ball joints for improved camber gain and enhanced cornering traction. They are available in UMI red or gloss black powdercoat. Choose the preferred kit for your vehicle. Features: * Combine with UMI lower A-arms to gain 8 to 10 degrees of positive caster * Shorter than stock to reduce need for shims when using racing alignment settings * Thick laser-cut ball joint plate * Rod ends reduce stiction and allow easy movement for drag race reaction and consistent times * Camber range from negative 1/2 degree to negative 2 1/2 or 3 degrees (depending on kit) * Taller ball joint kit is a top choice for Pro-Tour style cars requiring excellent stability and great cornering performance
Not Yet Reviewed
$629.99
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$699.99
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