Summit Racing SpeedCard - learn how to get 15% back up to $150

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156 Results Found For "Performance"

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Results 1 - 24 of 156

On Sale

UMI Performance Stock Height Springs

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

4.29 out of 5 stars ( 35 )

$349.99


$314.99

On Sale

Belltech Street Performance Shock Kits

Belltech Street Performance shock kits provide performance handling all around. Their engineers have focused their attention on tuning the low-speed compression characteristics of these shock absorbers, which are responsible for controlling pitch and roll, to help keep you confident and in control. Their progressive rebound tuning allows you to use large aftermarket wheels and still have a smooth, firm ride. These twin-tube shocks feature oversized construction with PTFE coated bushings and piston seals to provide the lowest possible friction and long-lasting performance. So, what's the ultimate in street performance? The increased comfort and maximum comfort of Belltech Street Performance shock kits.

4.65 out of 5 stars ( 55 )

$319.80

$457.90


$287.82

$412.11

On Sale

UMI Performance Front and Rear Sway Bar Kits

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.

4.62 out of 5 stars ( 71 )

$419.99

$579.99


$377.99

$521.99

On Sale

UMI Performance Rear Adjustable Upper and Lower Control Arm Kits

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

5.0 out of 5 stars ( 18 )

$429.99

$519.99


$386.99

$467.99

On Sale

UMI Performance Rear Non-Adjustable Lower Control Arms

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.

4.84 out of 5 stars ( 146 )

$329.99

$479.99


$296.99

$431.99

On Sale

UMI Performance Transmission Mounted Torque Arms

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

4.84 out of 5 stars ( 19 )

$329.99

$339.99


$296.99

$305.99

On Sale

ARB On-Board High Performance Air Compressors

Fully assembled and bench-tested ARB on-board high performance air compressors install into your vehicle and include a full, snap-together, fuse-protected wiring loom with solenoid plug-in contacts, mounting hardware with reinforcing bracket, and an OEM-quality compressor isolating switch. With the addition of an ARB-171302 pump-up kit (sold separately), they can be used to activate ARB Air Lockers, and perform other functions such as inflating camping gear. So what makes these compressors special? They're small enough to fit into even the tightest space and quiet enough to mount in the cab. They have enough output to air up four 35 in. to 37 in. tires in a single duty cycle and typically air up a 35 in. tire in just over two minutes. And, they work. ARB has tested these units in ovens, freezers, underwater, and in the silty dust of the Simpson Desert and they continue to perform. Features of ARB on-board high performance air compressors include: * Constructed of lightweight, high-strength, engineering-grade materials, including military and aerospace-grade components * Relocatable, splash-resistant air filter with washable high-flow sintered bronze filter cartridge for cleaner, cooler air supply * Fully sealed components for moisture and dust protection * Over-pressure safety valve-equipped * Pressure switch-controlled air manifold system specially designed for ARB Air Lockers * Hard-anodized cylinder bore and PTFE-impregnated carbon fiber piston seal for reduced friction and maximum life * Anti-vibration, sound-deadening, anodized mount dissipates motor heat and allows compressor to be repositioned 180 degrees * Ball bearing-equipped motor (no bushings) with unique, linear brush, pre-load system for long life, low heat, and quiet operation * Compressor piston equipped with a German-made, high shock-rated, cylindrical roller bearing * Motor is internally thermal-protected against extreme temperature damage * Comprehensive-photo illustrated installation guide * Range of accessories available

4.89 out of 5 stars ( 9 )

$359.95

$551.70


$323.96

$496.53

On Sale

UMI Performance Boxed Weld-In Subframe Connectors

UMI Performance boxed weld-in subframe connectors are necessary chassis upgrades when racing and hard driving habits are present. UMI Performance boxed weld-in subframe connectors greatly improve your car's handling ability, while reducing T-top squeaks, dash rattles, and quarter-panel flexing. Subframe connectors essentially tie the front and rear steel subframes together, resulting in a stiffened and strengthened chassis, allowing for better weight transfer and improved traction when launching. When strength is a concern, square tubing has greater torsion resistance over tubular designs. They will work with all aftermarket exhaust systems and will not affect ground clearance. Their weld-in style requires no bolts to tighten and offer less chance of flex when compared with bolt-in types.

4.91 out of 5 stars ( 23 )

$449.99


$404.99

On Sale

UMI Performance Rear Non-Adjustable Upper and Lower Control Arm Kits

UMI Performance rear non-adjustable upper and lower control arms are designed to give you the best of both worlds. Whether you're a weekend cruiser or a weekend track addict, we've got you covered. While adding ride improvements, they also work great for reducing traction loss. These control arms are direct bolt-on replacements designed to minimize wheel hop, improve cornering, and help with track consistency. The lower control arms are supplied with sway bar mounting holes designed for your stock sway bar and most aftermarket bars. Additional features include: * Built using 1.625 in. o.d. x 0.120 in. mild steel tubing * CNC-machined for precision tolerances and accuracy * Fully TIG and MIG-welded construction * Durable powdercoated finish

4.87 out of 5 stars ( 106 )

$329.99

$519.99


$296.99

$467.99

On Sale

UMI Performance Tunnel Mounted Torque Arms

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.

4.69 out of 5 stars ( 39 )

$329.99

$569.99


$296.99

$512.99

On Sale

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.

4.51 out of 5 stars ( 138 )

$299.99

$449.99


$269.99

$404.99

On Sale

UMI Performance Front Reinforcement Braces

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.

5.0 out of 5 stars ( 12 )

$299.99


$269.99

On Sale

Scott Drake Performance Strut Rods

Improve your suspension with Scott Drake performance strut rods. Finished in a durable black and silver powdercoat, these fully adjustable rods make setting the caster a breeze on the front suspension. In addition, they are designed with the mounting clevis attached directly to the strut rod bracket, eliminating lower control arm movement during acceleration, corning, and braking. So, if your classic isn't handling as well as you like, count on Scott Drake performance strut rods to up your Mustang's behavior. Features include: * Solid billet aluminum mounting clevis * Grease-able carbon steel heim joints with sintered bronze races * Standard and reverse threaded rods make for easy adjustment after installation and jam nuts maintain settings * Grade 8 hardware and nylon-insert lock nuts

4.17 out of 5 stars ( 6 )

$434.95


$390.95

On Sale

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.

4.7 out of 5 stars ( 99 )

$289.99

$329.99


$260.99

$296.99

On Sale

UMI Performance Rear Adjustable Lower and Double Adjustable Upper Control Arm Kits

UMI Performance adjustable lower and double adjustable upper control arms are direct bolt-on replacements designed to minimize wheel hop. UMI Performance double adjustable upper control arms feature on-car adjustability, allowing for quick and easy pinion angle adjustment, and yes, it's as simple as loosening two nuts! The spherical rod end allows for a "bind-free" operation, making them great upgrades for both your track and autocross-driven vehicles. The polyurethane bushings are designed to be bolted to the chassis for quiet, comfortable operation. UMI Performance adjustable lower control arms are constructed from DOM mild steel tubing with a 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. The lower control arms also feature reinforced spring perches and heavy-duty sway bar mounting points. The upper control arms feature 0.250 in. mild steel mounting points, a 4130 chromoly tube adapter, and a 4140 chromoly heat-treated 1.120 in. solid adjuster--truly overkill. These control arms feature polyurethane bushings, zinc plated steel sleeves, and "on-car" greasable Zerk fittings. Adjustments can be made using the high-quality, PTFE-lined spherical rod ends for quiet, bind-free performance. 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

5.0 out of 5 stars ( 3 )

$499.99


$449.99

On Sale

Belltech Street Performance OEM Shock Kits

The Belltech Street Performance OEM shock lineup has been engineered to provide a premium ride quality for today's trucks and SUVs. Company engineers focused their attention on tuning the low speed compression characteristics of these shock absorbers, which is responsible for controlling your sport truck or SUV's pitch and roll, dive and squat—to help keep you confident and in control. The "progressive" rebound tuning will complement large aftermarket wheels, keeping the ride smooth but firm and in control. Order the Street Performance OEM replacement shocks recommended for your vehicle. Additional features include: * Clear coat added over the powdercoated finish * Hardened chrome 15mm piston rod * Reinforced OEM-quality outer rubber bushings * Progressive-rate, polymer bump stop and triple-lip NBR rod seal (application dependent) * PTFE-coated piston and tuned, high-durometer, vulcanized rubber guide bushing to help reduce noise, vibration, and harshness (NVH) * Large 35mm piston and valves allow greater hydraulic control during quick wheel movements and long shock travel * Steel dust cover adds protection for the piston rod, sealing system, and does not deteriorate from UV exposure or chemicals * Large body diameters (50mm to 55mm) and twin tube design allow for larger oil volume and better heat dissipation, leading to increased shock life * Low-friction sealing and guide system creates a quick-reacting damper that is sensitive to the smallest of motions, with little to no temperature increase during extreme damper conditions

5.0 out of 5 stars ( 6 )

$319.80

$457.90


$287.82

$412.11

On Sale

UMI Performance Rear Adjustable Upper and Non-Adjustable Lower Control Arm Kits

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

5.0 out of 5 stars ( 17 )

$469.99


$422.99

On Sale

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.

4.8 out of 5 stars ( 5 )

$349.99


$314.99

On Sale

UMI Performance 1964-72 GM A-Body Rear Lift Bars

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!

5.0 out of 5 stars ( 3 )

$479.99


$431.99

On Sale

UMI Performance Rear Drag Sway Bars

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.

4.6 out of 5 stars ( 5 )

$449.99

$529.99


$404.99

$476.99

On Sale

UMI Performance Adjustable Extended Length Lower Control Arms

UMI adjustable extended length lower control arms are designed to properly center the rear wheels in your Impala SS wheelwells. Here's how they work--the control arms extend 5/8 in., but the adjustment allows you to lengthen or shorten them an additional 1/4 in. to perfectly center your car's rear-end. Built from 0.120 in. thick DOM steel tubing, these adjustable lower control arms are CNC-machined and contoured for exact tolerances and accuracy. The control arms attach to the rear-end using chromoly PTFE-lined spherical bearing rod ends, which operate bind-free when high handling is a concern and feature the correct provisions for adding stock or aftermarket sway bars. Get traction and control without road noise by installing UMI Performance adjustable extended length lower control arms.

3.67 out of 5 stars ( 3 )

$349.99


$314.99

On Sale

UMI Performance Solid Rear Sway Bars

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.

4.71 out of 5 stars ( 114 )

$429.99

$459.99


$386.99

$413.99

On Sale

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.

4.85 out of 5 stars ( 13 )

$299.99


$269.99

On Sale

UMI Performance Tubular Rear Sway Bars

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

5.0 out of 5 stars ( 9 )

$319.99

$519.99


$287.99

$467.99

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