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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.
( 13 )
$169.99
UMI Performance Lowering Springs
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.
( 140 )
$319.99
UMI Performance Bolt-In Viking Front Coilover Kits
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
( 6 )
$764.99
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.
( 65 )
$49.99
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.
( 8 )
$169.99
UMI Performance Rear Axle Flip Kits
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 Front Sway Bars
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.
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$259.99
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$289.99
UMI Performance Heavy-Duty Engine Mounts
Decrease engine movement by replacing your factory rubber motor mounts with a set of these heavy-duty engine mounts from UMI Performance. These solid motor mounts bolt to the frame of various GM F-Body, GM G-Body and several 1974 and up GM V8 vehicles. Each steel plate mount is CNC laser cut for exact tolerances, then is fully MIG-welded and given a black powdercoat finish for long-lasting service. These mounts include Grade 8 mounting hardware.
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$49.99
UMI Performance Tie Rod Adjusting Sleeves
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 Coilover Bracket Kits
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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$199.99
UMI Performance Frame C-Notch Kits
UMI Performance bolt-in frame C-notch kits improve axle clearance on lowered trucks, and are essential when lowering more than 6 in. Each kit features strong 3/16 in. laser-cut steel construction, quality hardware, and poly bump stops. Although notching of the factory frame is required, the kits do not require any cutting of your valuable bed reinforcement rails. UMI includes hardware and their exclusive inner support plate that doubles as an easy-to-use template. The C-notch kits are given a durable gloss black powdercoat for added protection and lasting good looks.
Not Yet Reviewed
$229.99
UMI Performance A/C Heater Delete Panels
Eliminate weight and clean up unwanted bay clutter with a UMI Performance A/C heater delete panel. They are designed to eliminate both the heater box and air conditioning unit from the engine bay of your vehicle. UMI manufactures these panels from CNC-machined aluminum. They use factory mounting holes and hardware.
( 23 )
$49.99
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$69.99
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.
( 3 )
$39.99
UMI Performance Shock Relocation Kits
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.
( 2 )
$79.99
UMI Performance Shock Installation Hardware Kits
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
UMI Performance GM G-Body LSX Engine Mounts
Offering bolt-on convenience with the ability to upgrade your power plant, UMI Performance GM G-body LSX engine mounts allow you to install a LSX engine or reinforce an existing swapped engine. These mounts are machined from 1/4 in. steel and are MIG-welded for ultimate strength. They will mount the LSX engine to the G-body but, depending on your accessory applications, the crossmember may need alteration to properly fit with your A/C and certain oil pans.
( 3 )
$149.99
UMI Performance Sway Bar Brackets
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
$99.99
UMI Performance Stage 2.5 Handling Kits
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
$4,369.99
UMI Performance Transmission Crossmembers
UMI Performance transmission crossmembers are designed for late model F-bodies. These crossmembers are built using 0.120 in. rectangular tubing, 0.188 in. mild steel mounting plates, and a 0.375 in. thick transmission mount. These crossmembers are powdercoated bright red or gloss black and include new mounting hardware.
( 5 )
$349.99
UMI Performance Replacement Control Arm Bolts
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.
( 102 )
$15.99
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$27.99
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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$2,289.99
UMI Performance Front Non-Adjustable Upper A-Arms
UMI Performance front non-adjustable upper A-arms are designed to add front-end rigidity, increase strength, and eliminate the flex found with stock A-arms. UMI Performance front non-adjustable upper A-arms are built using strong DOM steel tubing and 0.188 in. thick CNC-machined ball joint mounts and are supplied with greasable polyurethane bushings. These upper A-arms also feature a -3 degree improved ball joint angle for lowered vehicles. Additional features include: * 1.250 in. x 0.120 in. mild steel tubing * Adjustment for cast and camber * Brilliant durable powdercoated finish * Use OEM hardware
( 1 )
$599.99
UMI Performance Shock Mounts
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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$299.99
UMI Performance Front Adjustable Upper A-Arms
UMI Performance front adjustable upper A-arms were designed to outperform the stock setup. Whether you use them at the race track or as added improvements to your daily driver, they've been tested and improved to handle both applications. UMI Performance front adjustable upper A-arms are designed to add front-end rigidity, improved handling and strength, and to eliminate the flex found with stock A-arms. UMI Performance A-arms are built using strong DOM steel tubing and 0.188 in. CNC-machined ball joint mounts and are supplied with XM Endura series rod ends. These A-arms are supplied with high-quality spherical bearing rod ends. These rod ends replace the stock rubber bushings found in the OEM arms. Additional features include: * 1.250 in. x 0.120 in. mild steel tubing * TIG-welded 4130 chromoly threaded tube adapters * 3/4 in. hard chrome plated PTFE/KEVLAR® self-lubricating race rod ends * CNC-machined 0.188 in. ball joint mounts * Adjustment for cast and camber * -3 degree improved ball joint angle for lowered vehicles * Durable powdercoated finish * Use OEM hardware
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$699.99
