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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Ford Performance Parts Rear Upper Axle Bushing Kits

Ford Performance Parts rear upper axle bushing kits include bushings, C-locks, and friction modifier. These kits are the same kits included with every Ford Performance Parts 8.8 axle assembly and are necessary for installation.

4.8 out of 5 stars ( 10 )

$42.99

Steeda S550 Mustang MagneRide Dual Rate Lowering Springs

Are you looking for competition-proven handling performance for your 2015+ S550 Ford Mustang or Shelby GT350, while still maintaining street drivability? Steeda Dual Rate Ultimate Handling lowering springs are available for your MagneRide-equipped S550 Mustang! Steeda's experience and expertise in high performance street and racing suspension systems is second-to-none, and the team at Steeda has put that experience to work for you. Designed for ALL street and road racing applications, Steeda's Competition springs have the highest rates on the market but still maintain a comfortable and enjoyable ride when put on the street. Competition-proven in both NASA and SCCA events, these springs greatly reduce nosedive and keep body roll to a minimum for the ultimate in performance handling. By lowering your S550 Mustang .750 in. all around, the springs provide an optimized center of gravity and aggressive stance. At a recent HDPE event, Steeda clocked a 4-second lap time improvement with just their springs and adjustable camber plates. They're a tremendous handling upgrade for GT350s, as well as any MagneRide-equipped S550 Mustang. Professional race car driver Billy Johnson borrowed a Q500 for some laps at Palm Beach International Raceway and this is what he has to say about them: "The Steeda Q500 was a blast to drive on track... The adjustable suspension was far from harsh and had a wide range of adjustability to dial the car in at the track. Overall it was a nice dual-purpose street and track package that raised the limits of the Mustang GT." Product benefits: * Lowers the non-PP Mustang .750 in. front and rear * Lowers GT350, PP1, and PP2 Mustangs .500 in. front and rear * Designed for competition racing but maintains outstanding street-able ride * Highest spring rate for dramatic improvement in handling and reduction of nosedive * Steeda collaborates with the best motorsport spring engineers in the industry to provide you the best products possible * Steeda springs are developed using advanced proprietary CAD data

Not Yet Reviewed

$479.95

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$494.95

ReadyLift Suspension Coil Spring Lift Kits (4.5 in.)

The all-new 4.5 in. coil spring lift kits allow for even more ground clearance while going to a 37 in. tire. Springing up to the new 4.5 in. lift yields all the bells and whistles of a big 6 in. kit but at a slightly lower, garage-able stance. These kits come with: heavy-duty steel radius arm drop brackets, heavy-duty fabricated steel front, and rear (2500 only) track bar brackets, forged dropped pitman arm, sway bar relocation brackets—and bump stop extensions, preventing over-compression of the included Falcon 1.1 monotube front and rear shocks. Both 4.5 in. Ram HD kits include ReadyLift Suspension's unique CNC-machined 6061-T6 billet aluminum Driveline Indexing System (DIS) that re-clocks the transfer case to properly align the front output shaft for improved driveline angles. The Ram 2500 HD comes with the standard output diesel engine DIS system. Kit 49-19420 includes everything in ReadyLift's popular 6 in. lift kit, as well as these new DIS re-positioning components. Heavy-duty and great riding 4.5 in. lift front springs, 3 in. lift rear coil spring spacers, heavy-duty radius arm drop brackets, heavy-duty fabricated steel front, and rear track bar brackets, dropped cast iron pitman arm, front/rear sway bar relocation brackets, and bump stop extensions preventing over-compression of the new Falcon 1.1 monotube shocks front/rear shocks are all included in this premium kit. Details at a glance: * For use on diesel engine Ram 2500 4WD HD trucks only * All-new 2019-2022 Ram 2500 4WD HD 4.5 in. lift kit * 4.5 in. front/3 in. rear spring lift kit * Includes all-new transfer case clocking ring and new heavy-duty transmission crossmember * Includes four Falcon 1.1 monotube shocks tuned specifically for the Ram 2500 HD * Allows for up to 37x13.50 tires on 20 in. x 9 in. wide wheels with -18 offset. * Note: Does not work with Factory Air suspension or Auto Level system (factory helper bags)

Not Yet Reviewed

$2,449.95

Rock Jock Coil Spring Shims

Fine tune your Jeep's height per model, engine combination, and added weight load with Rock Jock coil spring shims. They are offered in two thicknesses for the front or rear, and feature steel construction with a semi-gloss black powdercoat finish. They mount between the welded-on coil spring axle pad and the coil spring isolator. Front shims are pre-drilled with a hole that the indexing pin in the coil spring isolator fits through for proper clocking. Choose the position and thickness needed for your Jeep.

Not Yet Reviewed

$23.60

ReadyLift Suspension MAX3.3 Ram Diesel Lift Kits

ReadyLift Suspension MAX3.3 Ram diesel lift kits provide plenty of clearance for aggressive tires with no rubbing, delivering a beefy, tough look. Featuring Falcon 3.3 adjustable shocks, these kits supply numerous other components to give your truck the perfect lifted stance, plus performance. ReadyLift Suspension MAX3.3 Ram diesel lift kits are designed with proprietary front single rate and rear dual rate coil springs, heavy-duty fabricated steel front and rear track bar brackets, forged dropped pitman arm, front/rear sway bar relocation brackets, bump stop extensions preventing over-compression of the Falcon 3.3 adjustable front and rear shocks, and ReadyLift's tubular radius arms that are built to handle use and abuse, as well as serve as critical alignment components. Some Ram HD trucks can experience a slight vibration after lifting due to driveline angle sensitivity. These ReadyLift kits address this by including a unique CNC-machined 6061 T-6 billet aluminum Driveline Indexing System (DIS) that re-clocks the transfer case, aligning the front output shaft for improved driveline angles. They also provide a stout heavy-duty steel crossmember that accommodates the new T-case position, resulting in a smooth driving experience on or off-road. Features, specs, notes: * 6 in. front lift with a coil spring rear lift for the perfect lifted stance * Heavy-duty tubular radius arms correct the caster angle * Maintains factory turning radius without rubbing (using the recommended wheel and tire size) * Maintains factory suspension geometry and articulation * Allows for up to 37 in. x 12.50 in. tires on 9 in. wide wheels with +01 to +18 offset. * Falcon 3.3 fast adjust dampers offer a wide range of adjustability for specific terrain and/or handling characteristics with two separate knobs to tune to your preference * 3-position fast adjust knob for soft, custom, and firm compression -- Soft mode allows a partial bypass of the main piston for a softer ride * 8-position micro adjust dial offers refined damping adjustments * Reservoir design increases nitrogen-to-oil ratio for consistent damping over wide temperature ranges * Hard anodized large bore 6061 T-6 aluminum shock body for impact and corrosion resistance, as well as increased oil volume for consistent performance * VOD (Volume Optimized Damping) features a digressive linear piston for quicker ramp-up for reduced body roll and an overall increase in damping to reduce bottom out when pushed to the limit * Red Line High VI shock oil for consistent performance across all temperatures from 50 degrees F to 450 degrees F with anti-wear and lubricity agents

Not Yet Reviewed

$3,889.95

Rough Country N3 Suspension Lift Kits

Rough Country offers N3 Series suspension lift kits for thousands of trucks from the late 1960s and up—including models from Chevrolet, GMC, Cadillac, Dodge, RAM, Ford, Jeep, Toyota, Nissan, and Mazda. Depending on the application, these kits enable you to raise the front and/or rear of your vehicle anywhere from 1.5 in. to 7.5 in. This is accomplished via a variety of lift component options, such as steering knuckles, torsion bar keys, spacers, strut kits, A-arm brackets, coil springs, leaf springs/blocks, upper control arms, Add-a-Leaf, and shackles. Suspension lift kits provide many benefits, including an aggressive stance, a clean level look, increased ground clearance, and plenty of ride height to accommodate larger tires. Rough Country kits feature front and/or rear N3 nitrogen-charged shocks for incredible ride quality on- and off-road. Most kits are 100 percent bolt-on, requiring no cutting, drilling, or welding. Enhance your rig with all-new stature; order the lift kit recommended for your truck!

3.53 out of 5 stars ( 15 )

$1,419.95

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$1,819.95

Rough Country V2 Suspension Lift Kits

Rough Country V2 suspension lift kits offer your vehicle a more commanding presence with a more aggressive stance and a smooth factory-like ride. These suspension kits provide everything needed to lift your vehicle, giving you increased ground clearance to run larger tires while reducing the nose-down factory look. The kits feature Rough Country's V2 monotube shocks delivering incredible ride quality and performance. Choose the lift kit designed for your vehicle. V2 shock features: * Monotube design * Internal floating piston * Nitrogen-charged * 46mm high-flow piston * Fast heat dissipation * 36kN tensile strength * Mounts inverted * T6061 brushed aluminum body * 3-year Manufacturer's Warranty

5.0 out of 5 stars ( 1 )

$1,619.95

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$2,069.95

Rough Country M1 Suspension Lift Kits

Whether it's to turn heads, sling mud on a path less traveled, or simply to get extra clearance for those bigger tires, Rough Country M1 suspension lift kits offer amazing off-road performance at an incredible value. They are easy to install, and each kit includes the specific heavy-duty components and hardware needed for your truck's lift, plus Rough Country M1 shocks. Select the kit designed for your truck with the lift desired. M1 shock features: * 2 in. seamless extruded tube * 46mm digressive piston * Self-adjusting, deflective-disc independent rebound and compression * 18mm centerless-ground, case-hardened, chromed, and super-polished rod * 46mm monotube design ensures consistent, fade-free performance in all conditions * Digressive valving instantly reacts to changing surface conditions * Zinc plated for resistance against harsh elements * Durable vulcanized natural rubber bushings

5.0 out of 5 stars ( 1 )

$1,689.95

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$1,889.95

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