Collection: QA1

Performance Suspension. Since 1993.
QA1
QA1 started in 1993 building rod ends, spherical bearings and custom linkages for racers, then moved into shock manufacturing with the purchase of Hal Shocks in 1998 and Carrera Shocks in 2004. Today the company designs and builds shocks, struts, suspension components and carbon composite driveshafts in more than 100,000 square feet of its own manufacturing space in Lakeville, Minnesota, under an ISO 9001 certified quality system.
Single & Double Adjustable DampingBuilt in Lakeville, MinnesotaISO 9001 Certified
What We Carry from QA1
Pro Coil, Proma Star & Stocker Star coil-over shocks
Full-vehicle suspension kits for GM A/B/G/F/X-body, Mopar & Mustang
Tubular control arms, K-members, sway bars & crossmembers
Rod ends, spherical bearings, jam nuts & linkages
REV Series carbon fiber driveshafts
Big Wheel suspension kits & C10 conversion systems
QA1 builds for street performance, drag racing, circle track and street rods — most shocks are single or double adjustable, so ride and rebound can be dialed in after the car is on the ground.
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Vendor:QA1
QA1 Jam Nut - 10-32 Right Hand - 3/8in Hex 1/8in Wide - Steel
✓ In Stock • Ready to ShipRegular price $ 15.47Regular price$ 17.02Sale price $ 15.47Sale -
Vendor:QA1
QA1 Jam Nut - 3/4-16 Right Hand - 1-1/8in Hex 7/16in Wide - Steel
✓ In Stock • Ready to ShipRegular price $ 16.18Regular price$ 17.80Sale price $ 16.18Sale -
Vendor:QA1
QA1 Jam Nut - 5/16-24 Left Hand - 1/2in Hex 3/16in Wide - Steel
✓ In Stock • Ready to ShipRegular price $ 15.52Regular price$ 17.08Sale price $ 15.52Sale -
Vendor:QA1
QA1 Jam Nut - 1/4-28 Left Hand - 7/16in Hex 5/32in Wide - Steel
✓ In Stock • Ready to ShipRegular price $ 15.49Regular price$ 17.04Sale price $ 15.49Sale -
Vendor:QA1
QA1 Jam Nut - 5/8-18 Left Hand - 15/16 Hex 3/8in Wide - Steel
✓ In Stock • Ready to ShipRegular price $ 16.27Regular price$ 17.90Sale price $ 16.27Sale -
Vendor:QA1
QA1 15-18 Dodge Challenger RT/392/Scat Pack AT 3.3in REV Series Carbon Fiber Driveshaft
✓ In Stock • Ready to ShipRegular price $ 2,377.14Regular price$ 2,614.86Sale price $ 2,377.14Sale -
Vendor:QA1
QA1 Driveshaft - SP - GM 55.00in - 3.2 - 1310 U-JOINT - GM 27 SPL 5.5in
✓ In Stock • Ready to ShipRegular price $ 2,377.14Regular price$ 2,614.86Sale price $ 2,377.14Sale -
Vendor:QA1
QA1 11-14 Ford Mustang GT 3.3in REV Series Carbon Fiber Driveshaft
✓ In Stock • Ready to ShipRegular price $ 2,141.77Regular price$ 2,355.95Sale price $ 2,141.77Sale -
Vendor:QA1
QA1 11-14 Ford Mustang GT (SFI) 3.3in REV Series Carbon Fiber Driveshaft
✓ In Stock • Ready to ShipRegular price $ 2,141.77Regular price$ 2,355.95Sale price $ 2,141.77Sale -
Vendor:QA1
QA1 05-10 Ford Mustang GT (SFI) 3.3in REV Series Carbon Fiber Driveshaft
✓ In Stock • Ready to ShipRegular price $ 2,141.77Regular price$ 2,355.95Sale price $ 2,141.77Sale -
Vendor:QA1
QA1 15-17 Ford Mustang GT MT (SFI) 3.3in REV Series Carbon Fiber Driveshaft
✓ In Stock • Ready to ShipRegular price $ 2,141.77Regular price$ 2,355.95Sale price $ 2,141.77Sale -
Vendor:QA1
QA1 94-04 Ford Mustang Proma Star Coilover Strut Kit Double Adjust 200lb/in.
✓ In Stock • Ready to ShipRegular price $ 1,767.95Regular price$ 1,944.75Sale price $ 1,767.95Sale -
Vendor:QA1
QA1 99-06 Chevrolet Silverado 1500 2WD Front Coil-Over Kit - Single Adjustable
✓ In Stock • Ready to ShipRegular price $ 713.95Regular price$ 785.35Sale price $ 713.95Sale -
Vendor:QA1
QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 500lbs/in - Pigtail - Aluminum
✓ In Stock • Ready to ShipRegular price $ 749.95Regular price$ 824.95Sale price $ 749.95Sale -
Vendor:QA1QA1 GM Pro Front Coil-Over Shock Absorber - Single Adj. - Stock Mount - 10.125in/15in - Aluminum
✓ In Stock • Ready to ShipRegular price $ 274.95Regular price$ 302.45Sale price $ 274.95Sale -
Vendor:QA1
QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 400lbs/in - Flat Large - Aluminum
✓ In Stock • Ready to ShipRegular price $ 749.95Regular price$ 824.95Sale price $ 749.95Sale