Car & Truck Chassis & Suspension Parts

Welcome to the home of great handling and ride quality! We stock a huge assortment of car and truck chassis and suspension parts like shocks, struts, and coil and leaf...

Welcome to the home of great handling and ride quality! We stock a huge assortment of car and truck chassis and suspension parts like shocks, struts, and coil and leaf springs, so whether you want a smooth street ride, responsive race handling, or rugged off-road control, you can find all the parts you need for your suspension upgrades here. We have complete lowering kits for a road-hugging sport stance, and lift kits to accommodate massive tires and greater suspension travel. Summit also has steering components, sway bars, frame rails and connectors, tie rods, wheelie bars, and wheel tubs, plus engine, transmission, and...

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Helix Triangulated 4-Link Kits

Helix triangulated 4-link kits bring your rear axle under control! Helix knows that putting power to the ground is essential, whether your car is stock or hot rodded; so they built a 4-link kit that will remain straight and perfectly aligned under even the most demanding applications. Heavy-duty only begins to describe these kits, with each bracket custom-cut from 3/16 in. steel plate and bars made from 0.156 in. wall tubing. Topping off each bar are special, infinitely adjustable rod ends that are thicker than usual—and thread over 2.5 in. into the 4-link bars, giving you added strength and adjustability. Nearly 200 kits are available; order the model recommended for your vehicle.

2.25 out of 5 stars ( 4 )

$699.95

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$949.50

RideTech Triangulated 4-Link Systems

RideTech triangulated 4-link systems are designed for the the professional builder who wants a straightforward, no-compromise rear air ride suspension. They do not require a panhard bar, and feature round, 0.219 in. thick 4-link tubing. The systems include the 4-link mounting brackets for the front and rear, as well as the installation hardware. Welding is required to mount one of these kits to your vehicle.

4.8 out of 5 stars ( 5 )

$765.00

Top Street Performance Triangulated 4-Link Rear-End Suspension Kits

Top Street Performance's popular triangulated 4-link rear-end suspension kits are designed to work with a 3 in. axle tube and have 3-position shock mounts to make it easy to set the desired ride height. They mount the forward brackets to the inside of your frame and eliminate the need of a panhard bar. The link bars are fully adjustable 1 in. diameter by 0.156 in. wall tubing with 3/4 in. rod ends and nylon bushings. They're available with steel or stainless steel tube material. These all-in-one kits are a simple solution for great looks and handling. Order the model recommended for your vehicle.

4.8 out of 5 stars ( 5 )

$283.96

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$349.44

Heidts Street Rod Triangulated 4-Link Kits

GM has used triangulated 4-links in many of their installations for quite some time. Heidts offers these popular, no-panhard rod triangulated 4-link kits for your street rod. You'll gain better handling and performance from the "triangle" that keeps your rear axle centered. The bars of these street rod triangulated 4-link kits are fully adjustable. The total inventory on these kits includes a 1 in. x .156 tube with 3/4 in. stainless adjusters and urethane bushings, angled and straight chassis brackets, multi-position coilover axle brackets, tabs, and hardware. You choose either plain steel or polished stainless steel tubes. Heidts street rod triangulated 4-link kits are a favored way to gain great handling. Order the kit recommended for your vintage application.

Not Yet Reviewed

$691.00

Aldan American Triangulated 4-Link Kits

Aldan American triangulated 4-link kits can upgrade your vehicle's performance and ride quality. 4-link kits maintain proper axle position front to back and prevent rotation of the axle, keep pinion angle constant. Built to their high standards, Aldan American universal parallel 4-link kits include poly bushings, .156 in. wall DOM tubing, and hardware, as well as rod ends and laser-cut, TIG-welded brackets.

Not Yet Reviewed

$879.95

Heidts Triangular 4-Link Kits

The triangle is one of the strongest shapes, and Heidts triangular 4-link kits are built strong to keep your axle properly centered. Designed for your American muscle Chevy, these popular triangulated 4-link kits do not require a panhard rod, and the bars are fully adjustable for suspension tuning. These 4-link base kits include a 1 1/4 in. x .156 tube with 3/4 in. stainless adjusters and urethane bushings, angled and straight chassis brackets, tabs, hardware and a top crossmember. Get added strength and better handling performance when you bolt-on Heidts triangular 4-link kits.

Not Yet Reviewed

$954.00

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$2,125.00

Artec Industries Easy 4-Link Bracket Sets

Artec Industries Easy 4-Link bracket sets provide one of the simplest ways to get your links done. The kits are based off popular parts for a single-or dual-triangulated 4-link suspension with angled upper control arms and straight or very slightly angled lowers, depending on your application. A-kit brackets allow for separate upper and lower mounts on the frame side for customizable 4-link setups. The B-kit brackets are combined for easy setup and upper mounts allow for adjustability. The C-kit brackets allow for lowers that can attach to a crossmember under the transfer case and uppers that attach on inside of frame rails. Order the Artec Easy 4-Link bracket kit that best fits your suspension application.

Not Yet Reviewed

$428.99

Chassis Engineering 4-Link Kits

Chassis Engineering 4-link kits are designed for your classic hot rod. Their selection of rear, rear for coilovers, and triangulated rear 4-link kits will keep the rear axle in place and improve handling, as well as traction. The kits include brackets, bars, stainless steel ends, urethane bushings, bolts, and instructions. They're available for fitment on a variety of vehicles from the 1920s and '30s. No matter your kit preference, adding a Chassis Engineering 4-link kit to your Ford will deliver the performance you desire.

Not Yet Reviewed

$496.00

QA1 Four Link Conversion Kits

Ditch those clunky leaf springs and take control of your rear suspension with QA1's coilovers and triangulated 4-link conversion kits. This upgrade improves ride quality, enhances handling performance, and enables you to dial in the perfect stance. With the added benefit of accommodating wider wheels and tires, this kit is the ideal solution for your car. QA1's 4-link conversion kits deliver handling control without compromising your daily comfort. Perfect for both street and track use, adjustable shocks are famous for their tunability, giving you exceptional handling and control and finer control over your suspension. Available with single adjustable, double adjustable, or MOD series shocks. Thoughtful design meets effortless installation requiring minimal welding. You'll experience a painless installation and setup process, where adjusting ride height, pinion angle, or wheelbase is as simple as a few tweaks – no link removal required. No modifications to floor pan required.

5.0 out of 5 stars ( 3 )

$2,383.95

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$3,687.95

QA1 Four Link Conversion and Narrowed Ford 9 in. Axle Kits

QA1's 4-link conversion and narrowed Ford 9 in. axle kits are an all-in-one solution that gives you everything you need to get your First-Gen Camaro or Firebird project on the road—fast. QA1 paired their 4-link suspension kit with a custom narrowed 9 in. rear housing for enthusiasts seeking top-tier performance and hassle-free installation. Your time is valuable, so say goodbye to hunting for junkyard rear ends or struggling with endless measurements and mismatched components—every component in this package is tested by QA1 to fit the first time. These QA1 upgrade kits have been engineered to deliver the performance, ride quality, and adjustability you need to handle serious power and aggressive driving—without the hassle of having to outsource each part. Ultimate shock performance: Ditch your leaf springs for QA1 MOD Series coilovers, triangulated 4-link suspension and an all-new narrowed 9 in. rear end. QA1's MOD shocks are designed to provide the ultimate in tunability and performance. With their four-way adjustable valving, remote nitrogen canisters, and huge dampening forces, QA1 MOD shocks deliver in any driving scenario. QA1 4-link kits are fully engineered to provide ride height, ride quality and instant center adjustability. Whether you're after a lowered, aggressive look or need clearance for wider wheels and tires, QA1 systems deliver. Easy installation: QA1 is committed to delivering products that make upgrading your car as simple as possible, and their 4-link kits with 9 in. housing are designed for a bolt-on installation, eliminating the need for custom fabrication. Key Features: * Narrowed housing to accommodate wide wheel and tire packages in mini tubbed cars * Fabricated center section engineered for maximum strength and durability * Formed trailing arm brackets reduce flex under high loads, ensuring your suspension remains rigid * Heavy-duty 3 in. OD, 1/4 in. wall axle tubes provide the durability needed for high-performance applications * 31-spline 1541H alloy axles support up to 650 hp, with the housing handling up to 800 hp * Durable semi-gloss powder coat finish offers long-lasting protection and a clean, sleek look * Drain plug, fill plug, and Jack Pad come standard to make service a breeze * Includes T-bolts and housing studs for assembling axle shafts and installing third members * High-quality roller bearings for smooth operation and long-lasting reliability

Not Yet Reviewed

$4,435.95

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$5,525.95

Artec Industries Large 4-Link Crossmember Brackets

Artec Industries large 4-link crossmember brackets allow for triangulated lower links that meet at a 1.75 in. O.D. round tube or 2.00 in. square tube crossmember between frame rails (depending on model). They're made for use with large joints that have a 2.625 in. mounting width. The hole size is 9/16 in., but can be drilled for larger sizes. Angles are set at 22 degrees each (44 degrees total) to allow use with Artec's angled lower link axle brackets. These large 4-link crossmember brackets are made from 1/4 in. thick steel and come in six unwelded pieces that jig together for easy assembly.

5.0 out of 5 stars ( 1 )

$114.99

QA1 Four Link Conversion and Standard Ford 9 in. Axle Kits

QA1's 4-link conversion and standard Ford 9 in. axle kits give you everything you need to get your 2nd Gen Camaro or Firebird project on the road—fast. QA1 paired their 4-link suspension kit with a custom 9 in. rear housing for enthusiasts seeking top-tier performance and hassle-free installation. Your time is valuable, so say goodbye to hunting for junkyard rear ends or struggling with endless measurements and mismatched components—every component in this package is tested by QA1 to fit the first time. Each kit is engineered to deliver the performance, ride quality, and adjustability you need to handle serious power and aggressive driving—without the hassle of having to source each part. Ultimate shock performance: Ditch your leaf springs for QA1 MOD Series coilovers, triangulated 4-link suspension and an all-new narrowed 9 in. rear end. QA1's MOD shocks are designed to provide the ultimate in tunability and performance. With their four-way adjustable valving, remote nitrogen canisters, and huge dampening forces, QA1 MOD shocks deliver in any driving scenario. QA1 4-link kits are fully engineered to provide ride height, ride quality and instant center adjustability. Whether you're after a lowered, aggressive look or need clearance for wider wheels and tires, QA1 systems deliver. Easy installation: QA1 is committed to delivering products that make upgrading your vehicle as simple as possible, and their 4-link kits with 9 in. housing are designed for a bolt-on installation, eliminating the need for custom fabrication. Performance housing features: * Fabricated center section engineered for maximum strength and durability * Formed trailing arm brackets reduce flex under high loads, ensuring your suspension remains rigid * Heavy-duty 3 in. OD, 1/4 in. wall axle tubes provide the durability needed for high-performance applications * 31-spline 1541H alloy axles support up to 650 hp, with the housing handling up to 800 hp * Durable semi-gloss powder coat finish offers long-lasting protection and a clean, sleek look * Drain plug, fill plug, and Jack Pad come standard to make service a breeze * Includes T-bolts and housing studs for assembling axle shafts and installing third members * High-quality roller bearings for smooth operation and long-lasting reliability

Not Yet Reviewed

$4,435.95

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$5,525.95

Clearance

Scott's Hot Rods 4-Bar Rear Suspension Kits

Scott's Hot Rods 4-bar rear suspension kits have a simple design, but will greatly improve the ride quality and handling of your hot rod or custom. These truly equal length parallel 4-bars use a very long, perpendicular panhard bar to maximize efficiency and reduce lateral movement. Both user-friendly and fully adjustable, the kits also use their CNC-machined and tapped stainless steel rod ends with right-hand or left-hand thread, allowing you to adjust the pinion angle and setup without unbolting the link bars. And unlike a Triangulated 4-link system, the pinon angle does not change throughout the travel of the suspension. The kits are offered with coilovers or airbags. Your rear suspension is just as important as the front to the ride and handling of your car; install a Scott's Hot Rods 4-bar rear suspension kit and increase your driving pleasure. Additional notes and what's included: * CNC-machined 1 1/8 in. x 1/4 in. wall DOM tubing link and panhard bars (adjustable RH- and LH-thread) * Scott's utilize a bar as long as possible per vehicle application to ensure the least amount of lateral movement * CNC-machined stainless steel rod ends--RH- and LH-thread * FK Bearing heim joints--RH- and LH-thread * Aldan American single-adjustable coilovers or Firestone 9000 tapered air springs * Coilovers are the most popular for everyday cruisers * Airbag kits are for those who want to lay their vehicle on the ground * Upper shock crossmember is standard on all kits allowing you to determine final ride height when installing * Rear-end housing brackets * Front frame brackets * 5/8 in. Grade 8 hardware * Lifetime guarantee

3.25 out of 5 stars ( 4 )

$2,764.99

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$3,857.99

$1,522.50

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$2,935.50

QA1 Mopar Rear Coilover Conversion Systems

Upgrade your classic Mopar A, B or E body car to a triangulated four-link design with QA1's Mopar rear coilover conversion systems. These QA1 conversion systems will transform the way your classic Mopar launches, handles, and cruises down the road! The great-looking powdercoated components improve performance and save weight—plus, you'll enjoy a much more modern driving feel and improved handling in any setting. Order QA1's Mopar rear coilover conversion system for your application. Additional features: * Proven triangulated 4-link design is popular with street/strip machines, pro-touring/road racers and autocross drivers * Available for Mopar 8 3/4 in., Ford 9 in. and Dana 60 rear axles * Improved traction during launch * Easy installation that requires minimal welding * Supports both standard and inboard spring locations * Gain greater anti-squat and pinion angle adjustability * Correct your wheelbase to fit larger wheels and tires * Has clearance for 3 in. over the axle exhaust * Single- and double-adjustable shocks eligible for limited lifetime warranty by the manufacturer * You can add the optional rear sway bar to further reduce body roll during hard launches and cornering * Made in the USA

4.5 out of 5 stars ( 2 )

$2,383.95

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$3,660.95

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

$4,703.99

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