Availability
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
( 37 )
$349.99
UMI Performance transmission mounted torque arms eliminate unwanted traction problems and transfer your power to the wheels. UMI Performance transmission mounted torque arms bolt on directly in place of the factory unit using existing mounting holes and require no drilling or welding. These torque arms are designed to eliminate wheel hop under hard acceleration and reduce 60 ft. times instantly. UMI Performance transmission mounted torque arms are supplied with a low-deflection front bushing designed to replace the stock rubber bushing and bolt in the existing clamshell. The rear torque arm mount is constructed entirely of 0.375 in. thick, CNC-machined mild steel and is fully MIG-welded. These torque arms feature on-car adjustability for easy pinion angle adjustments using a 4140 heat-treated adjuster and 3/4 in. rod ends. Additional features include: * Constructed from 1.250 in. x 0.120 in. DOM seamless steel tubing * TIG-welded 4140 chromoly tube adapters * On-car adjuster built using 4140 chromoly steel and heat-treated for maximum strength * All mounting plates are CNC-machined to ensure hole-to-hole accuracy * Rear mounting plates use 0.375 in. thick mild steel and are designed to fit stock as well as 12-bolt and 9 in. rear-end housings * Rear mounts feature solid 3/4 in. rod ends and are attached using Grade 8 hardware * Durable powdercoated finish
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$339.99
UMI Performance tunnel mounted torque arms are a proven fourth-generation setup designed to remove the front mounting point of the torque arm off of the transmission, protecting the tailshaft from damage. They also work great for transmission swaps when a clamshell torque arm is not feasible. These torque arms include instant center adjustment brackets and can be purchased with or without a front driveshaft loop. They bolt into existing floor pan holes with no drilling or welding required.
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$329.99
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$499.99
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.
( 139 )
$299.99
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$319.99
These UMI Performance F-body spherical caster camber plates are designed to allow you to make changes that are not permitted with the factory strut mounts. They are fully TIG-welded using CNC-machined 1/4 in. thick steel and feature a chromoly PTFE-lined spherical bearing. This bearing replaces the factory rubber strut mount bushing. UMI Performance F-body spherical caster camber plates include new 3/16 in. thick zinc plated strut retainers and high-grade mounting hardware.
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$259.99
UMI Performance torque arm relocation kits are designed to remove the front mounting point of the torque arm off of the transmission and protect the tailshaft from damage. General Motors' tailshaft mounted design works great for a stock-driven vehicle; however, it is not designed to take abuse and hard launches. UMI Performance torque arm relocation kits replace your transmission crossmember with a new, stronger setup with a built-in torque arm mount. Each relocation kit is designed to fit a specific transmission and will work with virtually any stock-style aftermarket torque arm, as well as with the factory torque arm. These units are built using rectangular mild steel tubing and 0.188 in. mild steel mounting plates and they include all hardware needed for installation. The torque arm mount is machined from 0.250 in. thick mild steel and features a new clamshell for appropriately attaching the torque arm to the new crossmember.
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$269.99
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.
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$289.99
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$319.99
UMI Performance front reinforcement braces reduce squeaks and rattles common with the GM G-body platform. This welded steel tubing will stiffen the front frame horns and front crossmember area, and no drilling is required for installation. Grade 8 hardware is included to easily bolt the triangular brace onto your chassis. UMI front reinforcement braces are designed and manufactured with pride, and are available in your choice of powdercoat colors.
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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.
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$419.99
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.
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$349.99
UMI Performance lift bars replace your stock rear control arms, adding tremendous track gains, while not affecting ride height and keeping ride quality at its best. These lift bars are designed to work with axle torque to load the chassis of the car, forcing the rear wheels downward, while pushing the tires into the ground for harder launches and improved 60 ft. times. These bars are designed to greatly improve traction and reduce unwanted wheel hop. Constructed from boxed mild steel tubing, they feature a 0.120 in. wall and 0.188 in. thick mounting plates and are completely CNC-machined for exact tolerances and a superb fit. These lift bars feature greasable Energy Suspension bushings that reduce bushing deflection but still make these arms 100 percent streetable. Each lift bar features the correct provisions for adding a stock or aftermarket sway bar. Sway bar holes are placed in the correct pattern to maintain the sway bar level with the rear-end. All sway bar holes are reinforced with a 0.120 in. thick steel sleeve wall, TIG-welded, and then sanded into place. The rear mounting brackets feature two settings that allow the lift bar to be lowered 2 in. or 3 in., depending upon user preference and the vehicle's suspension setup. These lift bars also correct lost geometry and instant center on a lowered vehicle. Add a set of our adjustable upper control arms for maximum rear suspension setup!
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$479.99
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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$299.99
UMI Performance rear adjustable upper and non-adjustable lower control arms are direct replacements for the OEM setup. They add strength, ride improvement, and most importantly, rear-end adjustment. UMI Performance rear adjustable upper control arms are constructed from aircraft-quality 4140 chromoly steel and feature TIG-welded construction. The upper control arm mounting points feature CNC-machined 0.250 in. mild steel, 4140 chromoly tube adapters, and a high-strength, 4140 chromoly, heat-treated, 1.000 in. solid adjuster. UMI Performance rear lower control arms feature CNC-machined 0.120 in. wall thickness mild steel tubing, fully TIG-welded construction, greasable polyurethane bushings, and Zerk grease fittings. Additional features include: * On-car adjustability * 4140 chromoly threaded tube adapters * 3/4 in. hard chrome plated PTFE/KEVLAR® self-lubricating race rod ends * CNC-machined 6061 aluminum step bushings * Durable powdercoated finish
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$469.99
UMI Performance 2004-07 Cadillac CTS V motor mounts are designed to resist engine rotation while still offering moderate damping. They are manufactured from a durable, 1/4 in. thick double-shear steel bracket and a polyurethane loaded sleeve designed to withstand the high horsepower of the CTS V engine. The motor mounts are available in black or red powdercoated finishes, use Grade 10.9 mounting hardware, and are direct bolt-in replacements for the factory mounts.
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$279.99
UMI Performance Rear control arms and panhard bars are direct bolt-on replacements designed to minimize wheel hop and improve cornering and track consistency, while lowering ETs. The control arms are constructed from a DOM mild steel tubing 1.375 in. o.d. x 0.095 in. wall and are completely CNC-machined and fully TIG-welded for outstanding strength. The adjustable models feature spherical rod ends that allow for "bind-free" operation, making them great upgrades for both your track and autocross-driven vehicles. The Roto-Joint equipped models are designed to work like a spherical rod end while maintaining the qualities of a softer bushing. Roto-Joints feature a 4140 chromoly ball that rotates in a Delrin race. Additional features include: * Control arms are 1.375 in. x 0.095 in. mild steel tubing * 4130 chromoly threaded tube adapter (adjustable models only) * 3/4 in. hard chrome plated PTFE/KEVLAR® self-lubricating race rod end * TIG-welded construction * CNC-machined 6061 aluminum step bushings with zinc plated steel sleeves (where applicable) * Polyurethane greasable bushings * On car grease fittings (except rod ends) * Use OEM hardware
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$379.99
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
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$259.99
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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$279.99
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$299.99
UMI Performance offers double adjustable rear shocks for applications such as the 2015+ Ford F-150. They feature 19 compression and 19 rebound adjustments to ensure a quality ride and performance feel. Each shock comes complete with four machined spacers and proper hardware for installation. Street and race proven, these shocks are sold individually—and two are required per truck.
Not Yet Reviewed
$279.99
UMI Performance adjustable upper and lower control arms include tubular single adjustable lower and on-car adjustable upper control arms. These control arms are direct replacements for the OEM setup. They add strength, ride improvement, and most importantly, rear-end adjustment. Additional features include: * 1.500 in. x 0.120 in. mild steel tubing * TIG-welded 4140 chromoly tube adapters * Complete arm features TIG-welded construction * Polyurethane greasable bushings * Durable, long-lasting powdercoated finish * 3/4 in. hard chrome plated PTFE/KEVLAR® self-lubricating race rod end
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$429.99
UMI Performance non-adjustable lower control arms are designed to replace the factory setup. In doing so, they minimize wheel hop and improve cornering, while lowering track ETs and helping track consistency. UMI Performance non-adjustable lower control arms eliminate the flex and bushing deflection found in the factory lower control arms. Their tubular setup is built using 1.500 in. drawn-over mandrel tubing and features TIG-welded construction for the utmost in strength and durability. The rubber OEM bushings are replaced with greasable polyurethane bushings.
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$309.99
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$479.99
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 bolt-on 3-point subframe connectors increase chassis stiffness, performance capabilities, and overall drivability. Their setup is designed to tie the front and rear subframes together, adding additional cross-bracing throughout the center of the vehicle and protecting it to its fullest, while keeping ground clearance issues to a minimum. This spider web effect greatly improves your car's handling ability, while reducing T-top squeaks, dash rattles, and quarter panel flexing. They are designed for autocross, road racing, and drag racing setups. Connecting the front and rear subframes together allows for better weight transfer, improved traction, and straighter launches. Additional features include: * Constructed from 1.750 in. x 0.120 in. DOM mild steel tubing * 3-point brace uses 1.250 in. x 0.095 in. DOM mild steel tubing * Front mounting points feature 0.250 in. thick mild steel mounting plates * Mounting plates feature precision CNC-machining to ensure tolerances * MIG-welded construction * Durable powdercoated finish
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$499.99
UMI Performance panhard bar lowering/leveling kits are designed to increase over-the-axle exhaust pipe clearance, as well as to lower and level the panhard bar. These competition-proven setups include weld-in reinforcement plates for the factory panhard bar mount, and adjustable struts to prevent lateral movement of the bracket system. Laser-cut adjustment slots permit lowering and leveling the panhard bar for roll center height and performance tuning. UMI Performance panhard bar lowering/leveling kits give much of the performance of a Watts Link with easier installation and adjustment. They're available in red or gloss black powdercoat finishes. Additional notes and features: * For use with factory axle only * Lowers rear roll center height 1 3/4 in. to 4 in. in 7/16 in. increments * 100 percent bolt-in for street use; welding required for competition use * Upper panhard bar brace built using 1.250 in. USA DOM tubing * CNC laser-cut bracketry throughout * Exclusive weld-in reinforcement plate (required for competition use) * Adjustable panhard bar height and leveling
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$399.99
UMI Performance GM F-body C5/C6 brake conversion brackets are designed to mount 1997-2013 C5 or C6 front calipers and rotors to the 1993-2002 GM F-body spindle. These brackets are CNC laser cut from 3/8 in. thick mild steel. The CNC turned stand-offs are fully welded to the laser cut base for strength and a precision fit. The conversion brackets are supplied in a heavy duty black powder coat finish and each kit includes Grade 10.9 mounting hardware and complete detailed installation instructions. Benefits: * Larger rotors absorb and radiate more heat, the C5 rotor is 1 in. larger than the LS1 rotor and 2 in. larger than the LT1 rotor. The C6 rotor is 1/2 in. larger than C5 rotors. * Corvette rotors are directional, unlike the OEM LT1 and LS1 F-body rotors. Corvette rotors feature fins designed to advance air flow, allowing better cooling. * Many aftermarket brake pad and rotor options are available for all types of driving. Installation Requirements and Warnings: * C5 brakes require a minimum 17 in. wheel for clearance, while C6 brakes require 18 in. wheels. All 1996 and newer F-body 17 in. wheels will work with the C5 brakes. If you are running a different wheel set up please research fitment before purchasing. * Please note these are the adapter brackets only and to complete installation you must purchase rotors, calipers, abutment brackets, and pads separately. * To install these brackets both LT1 and LS1 spindles require modifications. This simple modification can be done while the spindles are on the car and require a small amount of cutting and grinding. LS1 models require less cutting than LT1 models. Instructions are included. The following wheels will not clear with this conversion kit, they may however clear with proper wheel spacers: * Enkei Win wheels 17 in. x 9.5 in. * 1993-94 SLP Firehawk wheels 17 in. x 9 in. * Borbet Type T wheels 17 in. x 9.5 in. * Forgeline RS reverse rim wheels * Torque Thrust II wheels * Konig Monsoon 17 in.
Not Yet Reviewed
$259.99
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