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
✕ Out of StockRegular price $ 4.74Regular price$ 5.22Sale price $ 4.74Sold out -
Vendor:QA1
QA1 Jam Nut - 3/4-16 Right Hand - 1-1/8in Hex 7/16in Wide - Steel
✕ Out of StockRegular price $ 5.65Regular price$ 6.22Sale price $ 5.65Sold out -
Vendor:QA1
QA1 Jam Nut - 5/16-24 Left Hand - 1/2in Hex 3/16in Wide - Steel
✕ Out of StockRegular price $ 4.83Regular price$ 5.32Sale price $ 4.83Sold out -
Vendor:QA1
QA1 Jam Nut - 1/4-28 Left Hand - 7/16in Hex 5/32in Wide - Steel
✕ Out of StockRegular price $ 4.79Regular price$ 5.27Sale price $ 4.79Sold out -
Vendor:QA1
QA1 Jam Nut - 5/8-18 Left Hand - 15/16 Hex 3/8in Wide - Steel
✕ Out of StockRegular price $ 5.68Regular price$ 6.25Sale price $ 5.68Sold out -
Vendor:QA1
QA1 15-18 Dodge Challenger RT/392/Scat Pack AT 3.3in REV Series Carbon Fiber Driveshaft
✓ In Stock • Only 3 leftRegular price $ 2,410.78Regular price$ 2,651.86Sale price $ 2,410.78Sale -
Vendor:QA1
QA1 Driveshaft - SP - GM 55.00in - 3.2 - 1310 U-JOINT - GM 27 SPL 5.5in
✓ In Stock • Only 1 leftRegular price $ 2,434.98Regular price$ 2,678.48Sale price $ 2,434.98Sale -
Vendor:QA1
QA1 11-14 Ford Mustang GT 3.3in REV Series Carbon Fiber Driveshaft
✓ In Stock • Only 3 leftRegular price $ 2,173.62Regular price$ 2,390.99Sale price $ 2,173.62Sale -
Vendor:QA1
QA1 11-14 Ford Mustang GT (SFI) 3.3in REV Series Carbon Fiber Driveshaft
✓ In Stock • Only 1 leftRegular price $ 2,173.84Regular price$ 2,391.23Sale price $ 2,173.84Sale -
Vendor:QA1
QA1 05-10 Ford Mustang GT (SFI) 3.3in REV Series Carbon Fiber Driveshaft
✓ In Stock • Only 1 leftRegular price $ 2,173.84Regular price$ 2,391.23Sale price $ 2,173.84Sale -
Vendor:QA1
QA1 15-17 Ford Mustang GT MT (SFI) 3.3in REV Series Carbon Fiber Driveshaft
✕ Out of StockRegular price $ 2,217.49Regular price$ 2,439.24Sale price $ 2,217.49Sold out -
Vendor:QA1
QA1 94-04 Ford Mustang Proma Star Coilover Strut Kit Double Adjust 200lb/in.
✓ In Stock • Only 1 leftRegular price $ 1,772.58Regular price$ 1,949.84Sale price $ 1,772.58Sale -
Vendor:QA1
QA1 99-06 Chevrolet Silverado 1500 2WD Front Coil-Over Kit - Single Adjustable
✓ In Stock • Only 2 leftRegular price $ 724.84Regular price$ 797.33Sale price $ 724.84Sale -
Vendor:QA1
QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 500lbs/in - Pigtail - Aluminum - Coil Shock Adjustable, 10in. Spring, 500lb./in. (GS501-10500A)
✓ In Stock • Only 1 leftRegular price $ 760.63Regular price$ 836.70Sale price $ 760.63Sale -
Vendor:QA1QA1 GM Pro Front Coil-Over Shock Absorber - Single Adj. - Stock Mount - 10.125in/15in - Aluminum
✓ In Stock • Only 4 leftRegular price $ 288.44Regular price$ 317.29Sale price $ 288.44Sale -
Vendor:QA1
QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 400lbs/in - Flat Large - Aluminum
✕ Out of StockRegular price $ 760.63Regular price$ 836.70Sale price $ 760.63Sold out