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

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16 Results Found For "Performance"

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Results 1 - 16 of 16

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QA1 1963-72 C10 Coilover Conversion Systems

Upgrade your classic truck to a modern driving feel and performance with QA1's 1963-1972 C10 coilover conversion systems. The kits come with everything you need to convert your C10's front end to coilovers and a tubular crossmember with rack-and-pinion steering. These systems are a great way to overhaul your suspension in one go, giving you adjustable ride height to achieve the perfect stance with up to 8 in. of drop—all while dialing in the ideal ride quality and performance for your application while reducing weight 140 lbs. over stock. Order the QA1 1963-72 C10 coilover conversion system recommended for your year/make and model vehicle. Product features and details: * Powered rack-and-pinion offers quicker steering and a tighter feel. Plus, increase steering angle when fitting larger wheels and tires, and improve geometry for enhanced drivability * Increased Ground Clearance: The crossmember and control arms make your undercab rails the truck's lowest point—new upper shock mounts increase travel for a great ride and performance, even at low ride heights * Adjustable Shock Valving: Double-adjustable shocks offer independent rebound and compression tunability—great for trucks that will see track time or drivers who really want to dial in ride quality on the street * Easy, Bolt-In Installation: The crossmember comes powder coated and ready to install—no need to cut or weld your frame—it easily locates the steering rack, and you can choose mounts (sold separately) for common engines * Modular Engine Mounts: Choose from modular engine mounts (sold separately) that allow you to reuse your existing transmission mount and driveshaft (kits are available for small block Chevy, big block Chevy and LS applications—DIY mounts are also available if you want to customize the location of your engine * Front Sway Bar: The optional front sway bar (sold separately) adds even more cornering capabilities—it reduces body roll and keeps your tires planted to give you more grip in the turns Fitment Notes: * If you already have QA1's coil-over system, you can find retrofit kits to use your existing components * Total drop range depends on wheel/tire fitment * Will require you to trim inner fenders * Engine mounts are year-range specific to maintain OE bellhousing location * Optimized bump steer settings require at least 18 in. wheels -- 18 in. wheels can run up to 6 in. of backspacing -- 20 in. wheels can run up to 7 in. of backspacing * Requires use of C10 spindles * May require different headers and oil pan (Stock SBC and BBC pans fit) * Steering shaft is not included * May require new power steering hoses depending on fittings, pump, and engine placement

5.0 out of 5 stars ( 4 )

$4,005.86

$5,198.36

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QA1 1973-87 C10 Coilover Conversion Systems

Upgrade your square body Chevy C10's driving feel and performance while getting the perfect stance with QA1's 1973-1987 C10 coilover conversion systems. The kits come with everything you need to convert your C10's front end to coilovers and a tubular crossmember with rack-and-pinion steering. These coilover conversion systems are a great way to overhaul your suspension in one go, giving you adjustable ride height to achieve the perfect stance with up to 8 in. of drop—all while dialing in the ideal ride quality and performance for your application while also reducing weight 140 lbs. over stock. Order the QA1 1973-87 C10 coilover conversion system recommended for your year/make and model vehicle. Product features and details: * Powered rack-and-pinion offers quicker steering and a tighter feel. Plus, increase steering angle when fitting larger wheels and tires, and improve geometry for enhanced drivability * Increased Ground Clearance: The crossmember and control arms make your undercab rails the truck's lowest point—new upper shock mounts increase travel for a great ride and performance, even at low ride heights * Single or double-adjustable shock valving offers independent rebound and compression tunability—great for trucks that will see track time or drivers who really want to dial in ride quality on the street * Easy, Bolt-In Installation: The crossmember comes powder coated and ready to install—no need to cut or weld your frame—it easily locates the steering rack, and you can choose mounts (sold separately) for common engines * Modular Engine Mounts: Choose from modular engine mounts (sold separately) that allow you to reuse your existing transmission mount and driveshaft (kits are available for small block Chevy, big block Chevy and LS applications—DIY mounts are also available if you want to customize the location of your engine * Front Sway Bar: The optional front sway bar (sold separately) adds even more cornering capabilities—it reduces body roll and keeps your tires planted to give you more grip in the turns Fitment Notes: * If you already have QA1's coil-over system, you can find retrofit kits to use your existing components * Total drop range depends on wheel/tire fitment * Will require you to trim inner fenders * Engine mounts are year-range specific to maintain OE bellhousing location * Optimized bump steer settings require at least 18 in. wheels -- 18 in. wheels can run up to 6 in. of backspacing -- 20 in. wheels can run up to 7 in. of backspacing * Requires use of 1973-1987 C10 spindles * May require different headers and oil pan (Stock SBC and BBC pans fit) * Steering shaft is not included * May require new power steering hoses depending on fittings, pump, and engine placement

5.0 out of 5 stars ( 1 )

$4,005.86

$5,198.36

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QA1 1963-87 C10 Front Coilover Conversion Systems

QA1 1963-87 C10 front coilover conversion systems are a great upgrade to your C10 front suspension. Each kit comes with QA1's proven single or double adjustable coilover shocks—so you can change the valving to meet your specific needs—along with a variety of spring rate options. These shocks allow for ride height adjustability and are 100 percent dyno-tested and serialized. The QA1 C10 upper and lower control arms are manufactured from 12-gauge HSLA steel tubing for increased strength and are powdercoated for long-lasting durability; they're topped off with performance ball joints and low-friction, maintenance-free bushings. These kits will add up to 7 degrees of caster for more stability, and allow for optimum camber adjustment in a lowered truck. For those on a budget, QA1 also offers kits without the upper control arm—which will add 3-4 degrees of caster, while still providing ride height adjustability with coilover shocks. Order the model designed for your vehicle application.

4.86 out of 5 stars ( 28 )

$2,015.06

$2,456.06

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QA1 Rear Suspension Conversion Systems

QA1 rear suspension conversion systems provide easy, bolt-in options to replace your coil springs on factory truck arms—without any cutting, welding, or other fabricating. Each kit contains frame brackets, axle brackets, linkage assemblies, a crossmember assembly, and necessary hardware. The conversions are available with coilovers or available for use with the factory springs. Order the model designed for fitment on your specific vehicle, and enjoy the stance, handling, and suspension performance of a revolutionary QA1 system.

4.71 out of 5 stars ( 17 )

$2,599.16

$2,791.76

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QA1 C10 Crossmember Retrofit Kits

Already have a QA1 coil-over conversion system on your C10? QA1 C10 crossmember retrofit kits add powered rack and pinion steering, offers 2 in. of additional drop range (up to 8 in. total), and saves an additional 70 lbs. of weight. These bolt-in upgrades improved drivability and steering feel while achieving the perfect stance. Choose the kit for your model year. Features and benefits: * Powered rack and pinion steering -- Provides quicker and tighter steering, plus increased steering angle when fitting larger wheels and tires and improve geometry for enhanced drivability. * Improved ground clearance -- The tubular design makes your under cab rails the truck's lowest point. Updated lower shock mounts add clearance and new upper shock mounts increase travel for a great ride and performance, even at lower ride heights * Compatible with existing QA1 coilover systems -- Easily swap out a few components on your existing QA1 shocks and control arms, allowing you to upgrade your truck in stages, starting with coilovers and control arms * Easy, bolt-in installation -- The crossmember comes powder coated and ready to install, no cutting or welding your frame. It easily locates the steering rack, and you can choose mounts (sold separately) for common engines.

5.0 out of 5 stars ( 1 )

$2,205.86

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QA1 1965-79 F-100 Coilover Conversion Systems

QA1 1965-79 F-100 coilover conversion systems are suspension kits built with a purpose—just like your truck! With these all-new, engineered-from-scratch systems, you can stop using junkyard parts to modernize your pickup, and instead bolt in the handling and performance you've always wanted. The front systems are 3.75 in. narrower than a Crown Vic, providing ideal handling and allowing fitment of larger wheels and tires. They also save 150 lbs. of weight and provide 3 in. to 5 in. of drop with standard spindles and 5 in. to 7 in. with drop spindles. QA1 1965-79 F-100 coilover conversion systems are available in single and double adjustable styles with everything you need included, except engine mounts. Included in the systems: * Adjustable shocks * High-travel springs * Coil-over hardware * Upper and lower control arms * Upper and lower crossmembers * Rack and pinion steering * Stock or drop spindles * All required nuts, bolts, etc.

4.29 out of 5 stars ( 7 )

$3,746.66

$4,259.66

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QA1 1965-72 F-100 Rear Coilover Conversion Systems

QA1 1965-72 F-100 rear coilover conversion systems offer unprecedented adjustability and maximum performance without any binding issues, and the ability to achieve a 4 in. to 7 in. drop. These bolt-in systems can be installed without removing the bed and everything you need is included, right down to the hardware. Kits are available with single or double adjustable shocks, and some specific kits include QA1 MOD Series coilovers. Included in the systems: * Adjustable shocks * High-travel springs * Coil-over hardware * Adjustable trailing arms * Adjustable panhard bar * Panhard bar brace * Adjustable torque arm * Torque arm axle mount * Torque arm crossmember * All required nuts, bolts, etc.

4.5 out of 5 stars ( 4 )

$2,599.16

$2,791.76

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QA1 MOD Series Pro Coilover Systems

Don't be limited to adjustments! Completely re-valve in minutes with the QA1 MOD Series Pro coilover systems. Designed specifically to meet the demands required by today's high performance drag race and handling/pro-touring cars, QA1's multi-patent-pending MOD Series shocks will transform the way racers respond to changing track conditions and configurations. The key element to this tunability is QuickTune Technology: dry modular valve packs that can easily be swapped out, all while the shocks remain on the car. An industry first, MOD Series shocks can easily be re-valved without interrupting the oil path or opening up the shock for debris and air contamination. Medium compression and rebound valve packs come standard; soft or firm compression and rebound valve packs are also available. Once the desired valving is in place, the unique double-adjustable design (with adjustable low-speed bleed) allows for fully independent control over the compression and rebound characteristics. With all these adjustability options, MOD Series shocks achieve an expansive force curve capability and an unprecedented level of tunability. The shocks also feature mounting adjustability to accommodate a variety of vehicles and mounting configurations. The nitrogen-charged canister is available in a piggyback or remote configuration for ease of installation in tight areas, and the base eyelet is indexable, so you can unbolt and reattach it at the angle you need for the best shock and canister placement. Like all QA1 shocks, MOD Series coilovers are 100 percent dyno-tested and serialized. Order the kit recommended for your vehicle.

Not Yet Reviewed

$2,050.16

$2,130.26

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TeraFlex Pro LCG Long Arm Suspension Systems

TeraFlex Pro LCG long arm suspension systems are an advanced high performance upgrade kit for applications such as the Jeep TJ Wrangler, designed to provide a low center of gravity (LCG) for enhanced off-road articulation and on-road handling. They feature longer, adjustable control arms to optimize suspension angles, replace the stock rear suspension with a 4-link system, and are intended for use with a coilover setup (sold separately). Additional details: * The system uses adjustable, long control arms made of durable DOM steel tubing that mount further back on the frame. This design relaxes the suspension link angles, restoring near-factory geometry, which results in a smoother ride, improved stability, and less stress on components, especially during extreme suspension droop. * Low center-of-gravity design provides excellent ground clearance without raising the vehicle's center of gravity excessively, which enhances stability on varied terrain. * The stock rear suspension and track bar are replaced with a triangulated 4-link system, which eliminates the need for a rear track bar and allows for adjustable anti-squat tunability to fine-tune performance. * Adjustable control arms allow for precise tuning of front caster and pinion angles, as well as optimizing rear pinion angles and anti-squat geometry. * Superior performance: Kit is engineered for aggressive off-road enthusiasts and is ideal for rock crawling and challenging trails, while maintaining on-road capability. * Durable construction: Components are made from CNC laser-cut, precision-bent 1/4 in. thick steel and feature a black powdercoat finish for strength and corrosion resistance.

Not Yet Reviewed

$3,634.59

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QA1 Rear MOD Coilover Conversion Systems

QA1 MOD Series coilover conversion systems put the ability to re-valve your shocks—on your car—into the palm of your hand. These innovative shocks feature QuickTune Technology, an industry-first that provides the ability to adapt to any track, any conditions, any time. The technology consists of interchangeable, dry modular valve pack assemblies, that can be thought of as dozens of finely tuned shocks you can hold in the palm of your hand. They define the valving curve of the shocks, and can be changed without interrupting the oil pathways. Simply unscrew from the shock, bolt-in another one with a new pre-determined valving range—and you're ready to go. There's no mess, no contamination, no air intrusion, and no downtime waiting on someone to re-valve your shocks. Ideal for Circle Track and Street/Strip applications, the shocks are available in a variety of extended and collapsed length models to best fit your vehicle. You get everything you need with these QA1 Rear MOD systems, from shocks to nuts and bolts, complete installation instructions, and even decals! Additional benefits and features of QA1 MOD Series shocks: * All new design delivers force, control, and unmatched tenability * Hard anodized aluminum bodies with PTFE—durable, non-galling surface * Double-adjustable shocks with low-speed bleed adjustments * Large solid piston (with blow-off valve)—improved driver feel and control with up to 1,600 lb. force * High-speed valving adjustment (coarse adjustment)—relates to shock operation during impact events, like hitting a pothole or curb * 24 clicks/settings—wider range of adjustment than comparable shocks * Indexable base eyelet—multiple mounting position to optimize knob access and provide more mounting flexibility * Low-speed valving (fine-tune adjustments)—adjusts ride quality and weight transfer on corner entry/exit; more bleed for softer feel and less bleed for stiffer feel * Piggyback or remote canister options * Unique spring adjuster nut and tool * Thrust bearings included * Superior thermal performance, as oil is in constant contact with outer body * One base shock can be upgraded over time to keep up with increased performance levels of your vehicle

Not Yet Reviewed

$2,096.06

$2,130.26

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TeraFlex Alpine IR Control Arms

TeraFlex Alpine IR control arms offer widespread alignment adjustability for all-out performance on your Jeep. They include advanced independent rotation bushings, make use of factory brackets, and can be added to an existing suspension lift. Reach for your Jeep's maximum potential with TeraFlex Alpine IR control arms. Features and benefits: * Available as full or partial kits (front upper or lower; rear upper or lower) * Durable drawn-over-mandrel tube (42mm diameter x 4mm wall) provides maximum strength * Optimizes caster angle and tunes anti-squat geometry for proper suspension alignment * Re-centers axles in the wheel well for proper suspension movement and/or increased wheelbase * Full range of movement—will not restrict articulation or off-road flex * IR (Independent Rotation) bushings are maintenance-free and provide unrestricted rotation and flex—plus outstanding NVH damping to improve ride quality * Zero-maintenance, forged, threaded joints for smooth and quiet flex * Premium black e-dipped coating provides superb durability and resists corrosion * Anodized 6061 T-6 aluminum clamp collar to secure rod end after length is set * TeraFlex Lifetime Warranty against defects

5.0 out of 5 stars ( 1 )

$2,012.78

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Heidts Mustang II Front Suspension Kits

Get your street rod up and rolling and improve your vehicle's suspension, handling, and performance with one of these Heidts Mustang II front suspension kits. Kits include: * Crossmember * Tubular upper and lower full A-frame style control arms * 11 in. diameter brake rotors * Bearings * Seals * Shocks * Springs * Stock-type spindles * Manual rack and pinion mounted to the front of the crossmember for additional engine clearance * Outer tie rod ends * Rubber spring cushions * Spindle nuts * All necessary mounting hardware

5.0 out of 5 stars ( 5 )

$2,250.00

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TeraFlex Falcon Sport Leveling Systems

TeraFlex Falcon Sport leveling systems are available for daily drivers and tow/haul packages. The first delivers increased stability and control, as well as improved ride quality and comfort both on and off-road. The second features adjustable piggyback rear shocks that allow you to select from three settings for towing and hauling capabilities. Both Falcon Sport leveling systems have shocks engineered with Zone Rate Tuning (ZRT) and Volume Optimized Damping (VOD). Order the kit recommended for your vehicle. TeraFlex Falcon Sport systems include: Front components: * Leveling monotube shock absorbers with fixed rate damping optimized for on and off-road driving * Progressive microcellular "foam" bump stops * Billet coil spring carrier * Injection molded squeak-free spring isolator * All necessary hardware Rear components: * Piggyback shock absorbers with fixed rate damping optimized for on and off-road driving * Tow/Hauling system has adjustable piggyback shocks with fast adjust knob with three compression settings for large damping adjustments--comfort and control, moderate tow/haul, and heavy tow/haul * Progressive microcellular "foam" bump stops * Bump stop cups * Roost guards * All necessary hardware All Falcon shocks feature: * Optimized fitment for clearance during full suspension travel * 2.25 in. shock body provides optimal performance * 6061-T6 aluminum alloy shock body resists wear and protects internal components, while providing superior heat dissipation * Smooth honed internal shock body surface for long-term performance * 3/4 in. induction hardened chrome plated shaft resists rock damage and corrosion, as well as prevents shaft buckling * Maximum shaft diameter allows for more precise tuning * Hard anodized billet piston * One-piece PTFE bronze piston wear band with O-ring * Inline OGS (Oil/Gas Separator) prevents cavitation * Red Line full synthetic shock oil with high viscosity index of 519 for consistent performance across all temperatures and reduced shock fade * 1,000 hour salt spray corrosion resistance test on all hardware * Serviceable and rebuildable (factory serviced) * 3-year warranty

Not Yet Reviewed

$2,212.54

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TeraFlex Alpine RT Coilover Suspension Systems

TeraFlex Alpine RT coilover suspension systems are designed specifically for the JL Rubicon Wrangler, as well as for each of the Rubicon's powertrain options. For every Rubicon Wrangler powertrain, a corresponding TeraFlex suspension system has been meticulously crafted to accommodate the subtle differences among the available motor choices within the Rubicon Wrangler lineup. Alpine RT suspension systems cater to JL Rubicon factory width axles, as well as the Tera60 or other axles featuring a 3.25 in. axle tube diameter. They feature Falcon coilovers developed to meet the distinct demands of the JL Wrangler and that address the common shortcomings of coilover shocks prevalent in today's noisy coilover market. Falcon coilover shocks are meticulously designed for utterly silent operation with sealed gimble bearing shock mounts, ensuring solid and noiseless control when combined with the TeraFlex coilover mount solution and allowing full suspension cycling without any component contact. The sleek, hard-anodized bodies of Falcon shocks serve as the perfect bearing surface for the sealed and lubricated spring sliders. The sliders' roller-bearing spring seats guarantee noiseless spring movement during compression and extension, even during spring twisting. Choose the quiet performance of TeraFlex Alpine RT coilover suspension systems for your Jeep. Additional features and notes: * Race-inspired performance for increased vehicle stability * Improved dynamic roll control and low-speed damping * Dramatic improvement in on-road comfort and off-road performance * Optimized fitment for unobstructed suspension travel and articulation * 13 in. stroke, front and rear * Adjustable crossover for true dual rate * 4.5 in. lift, +/- 1.25 in. adjustability using quick-adjust snap rings * Coated, booted, and sealed oversized gimbal lock bearings mount and maintain shock orientation * JL-specific springs and shock tuning * Falcon 3.3 Series quick-adjust tuning * Designed for standard 3.0 in. springs * Refreshed speed bumps silently provide 4x the bottoming resistance * RT4 long arm suspension for control, flex, and stability * Bolt on 1/4 in. laser-cut reinforced coilover brackets

Not Yet Reviewed

$3,506.24

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Mahle Forged Diesel Race Piston and Ring Kits

Mahle forged diesel race piston and ring kits are designed to withstand the extreme cylinder pressures of your high-boost diesel engine. Forged from strong aluminum alloy, these race pistons are machined for less weight and low compression ratios; and to reduce drag, scuffing, and friction the piston skirts receive a Grafal coating to optimize performance. The kits include a set of high-quality piston rings to get you all sealed up. With almost 90 years of racing heritage and technology, Mahle knows what your high performance diesel needs to keep performing. Get a competitive edge for your diesel-powered race rig with Mahle race piston and ring kits.

Not Yet Reviewed

$2,334.35

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MaxTrac Suspension Lift Kits

MaxTrac Suspension lift kits allow your truck/SUV to tackle all-terrain conditions with a simple set that's easy to put together. Experience a considerable variety of lift heights, and return to stock height later if desired. These coil spacer components are easy to use and extremely efficient, allowing your ride to get spruced up before hitting the road. Whether aiming to enhance your vehicle's menacing look or heading off-road, rely on MaxTrac to deliver nothing but the best with high-end, quality parts that'll weather all conditions. Order the set designed to fit your specific model.

4.86 out of 5 stars ( 7 )

$2,037.16

$4,178.53

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