- APEX Suspensions Systems
 - Manufacturers of springs and shocks for a wide range of vehicles worldwide. - Calmini Products Manufacturing Inc.
- Specialising in performance, suspension, and exterior upgrades for Suzuki and Isuzu built sport utility vehicles.
- Dynamic Suspensions
- Provides low volume damper and suspension component manufacturing and damper test equipment.
- Eibach Springs
- Manufactures suspension components including Pro-Kit, Sportline, and Competition Pro-Kit Springs. Use our interactive application guide to see which products fit your vehicle.
- Gabriel
- Manufacturer and worldwide distributor of ride control products including struts and shock absorbers.
- H&R
- Manufactures a range of special springs, stocks, cup kits, and coilovers for lowering and improving automotive handling and ride quality.
- Heidt's Hot Rod Shop, Inc.
- Providing custom-engineered suspensions and other parts and accessories for your 1930-1970 vehicle.
- Hotchkis Performance
- Manufacturer of suspension components designed to improve the performance of street vehicles.
- IPD
- Catalogue mail order company specialising in parts and accessories for Volvo automobiles.
- Koni
- Manufacturer of adjustable shock absorbers.
- KYB Corporation of America
- Manufacturer of shock absorbers, struts and hydraulic components.
- LiquidSpring Technologies, Inc.
- Manufacturer of the Compressible Liquid Adaptive Suspension System (CLASS) that replaces or eliminates springs, shock absorbers, and stabilizer bars.
- Monroe
- Maker of shocks.
- MTC Suspension
- Automotive leaf spring manufacturer.
- Pro-formance Shocks
- Racing and street rod shocks, springs and coil-overs.
- Progress Group
- Manaufacturers of vehicle handling upgrades including lowering springs, anti-roll bars, camber kits, and more.
- Reyco Industries, Inc
- Manufacturer of heavy duty tractor/trailer, bus, and Caravan suspensions.
- Skyjacker Suspensions
- Makers of suspension kits, shocks, steering items, and more.
 SPAX
- Suspension kits from the company who were the first to produce and patent on-car adjustable dampers.- Superlift Suspension Systems
- Manufacturer of truck suspension lift kits, body lift kits, accessories for lifted vehicles, and more.
- Sway-A-Way
- Truck Suspension Lift Kits
- Manufactures and distributes 4x4 lift kits and truck suspension accessories.
- Truk-Align, Inc.
- Maker of the Nu-Tech polymer bushing system that allows for restoration of marginally loose front end parts.
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