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QA1 Kit GM Pro Coil Alum S-Adj 10-400 Tapered Pigtail GS501-10400A

QA1 Kit GM Pro Coil Alum S-Adj 10-400 Tapered Pigtail GS501-10400A
QA1 Kit GM Pro Coil Alum S-Adj 10-400 Tapered Pigtail GS501-10400AQA1 Kit GM Pro Coil Alum S-Adj 10-400 Tapered Pigtail GS501-10400AQA1 Kit GM Pro Coil Alum S-Adj 10-400 Tapered Pigtail GS501-10400AQA1 Kit GM Pro Coil Alum S-Adj 10-400 Tapered Pigtail GS501-10400A
$1,196.99 ea
NEWARRIVING SOONEstimated Ship Date 08/25/2025 (If Ordered Today)
Model: 3195144
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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QA1 Single Adjustable Pro-Coil kits are an excellent choice for any GM muscle car owner looking for a better stance, ride quality and performance. These easy-to-install bolt-in kits are a great solution for adjustable ride height, and the single-adjustable valving provides ample range of tunability for comfort and performance.

QA1 coil over benefits: easily adjust your stance, performance, and comfort; USA-made quality

DIAL IN THE PERFECT STANCE 

Achieving the perfect, level stance is critical for the overall look and appearance of your car. GM Pro-Coil kits offer 0 to –2 inches of ride height adjustability, allowing you to dial in the perfect stance for your Chevelle, GTO, Cutlass, El Camino among many others. Adjustments within this range can be made with a simple turn of the spring seat nut. For an additional drop beyond 2 inches, consider adding drop spindles to your car. 

TUNE YOUR RIDE COMFORT & PERFORMANCE

QA1 single adjustable coilovers deliver exceptional ride quality and performance for your vehicle. With the simple turn of a dial, you can effortlessly switch between a comfortable cruise and a more aggressive feel, making them ideal for daily driving or twisty backroads. Accessing the 18-position knob is easy, and by turning the steering wheel to full lock, you can reach in and make your tuning adjustments at the base of the shock.  

QA1 Pro-Coil kits feature high-travel, USA-made coil springs built to deliver optimal performance. Spring rates are tailored to your vehicle's weight and driving style. Need help choosing the correct spring rate? Watch this video

EASY, BOLT-IN INSTALLATION

GM Pro-Coil Kits seamlessly bolt-in with both Original Equipment (OE) stamped steel control arms or QA1 tubular control arms. This gives you the flexibility to use the kit with your existing setup or upgrade your control arms for additional performance gains. 

Chock out the install video

MADE IN THE USA

QA1 shocks are proudly made in Lakeville, Minnesota. See a complete video on the manufacturing process. 

FEATURES AND BENEFITS

  • Up to 2” of ride height adjustment allows you to dial in the perfect stance. 
  • Achieve the ultimate balance of ride quality and performance with simultaneous adjustment of rebound and compression valving. 
  • Easy bolt-in installation that works with your factory or upgraded QA1 tubular control arms. 
  • Limited Lifetime Warranty for peace of mind. 
  • Proudly made in the USA

BEST-IN-CLASS WARRANTY

QA1 Single Adjustable Pro-Coil Kits are eligable for a Limited Lifetime Warranty. For peace of mind, simply register your shocks at QA1.net/Warranty to ensure coverage for as long as you own your vehicle. 

FITMENT NOTES

Spanner wrench: P/N T114W or T115W (required) Thrust Bearing Kits (optional): P/N 7888-109 

RECOMMENDED FRONT SPRING RATE CHART

YEAR MODEL SMALL BLOCK SPRINGS BIG BLOCK SPRINGS
1964-1972 GM A-Body 400 500
1973-1977 GM A-Body 550 650
1978-1988 GM A/G-Body 400 500
1967-1969 GM F-Body 400 500
1970-1981 GM F-Body 400 500
1968-1974 GM X-Body 400 500
1982-2004 S-Series Pickup 400 500
1955-1957 Chevrolet Sedan 400 500
1958-1970 Chevrolet B-Body 450 550
1971-1976 GM B-Body 500 600
1977-1990 GM B-Body 500 600
1991-1996 GM B-Body 500 600
1963-1987 C10 750 750
1988-1998 C1500 550 600
1963-1965 Buick Riviera 600 600
About Qa1 Precision Products

From bolt-on products that get you behind the wheel faster, to experienced technicians available to help increase your 60’ times or handle curves with confidence, everything we do is designed to get you out on the road.

Whether your goal is a Saturday night sprint across the checkered flag or a slow, easy cruise down main street, we have the suspension and driveline products you need for the experience you want.

No matter what you drive, we want you to #goDRIVEit!

Downloads:

Download Name File Size
9919-173_REV_Pro Coil.pdf567.96KB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years
Buick Gran Sport 1965 - 1967
Buick Skylark 1964 - 1967
Buick Special 1964 - 1967
Chevrolet Bel Air 1956 - 1957
Chevrolet Chevelle 1964 - 1967
Chevrolet El Camino 1964 - 1967
Chevrolet Malibu 1964 - 1967
Chevrolet Truck 1955 - 1957
Chevrolet Two-Ten Series 1955 - 1957
Oldsmobile 442 1964 - 1967
Oldsmobile Cutlass 1964 - 1967
Oldsmobile Vista Cruiser 1964 - 1967
Pontiac GTO 1964 - 1967
Pontiac LeMans 1964 - 1967
Pontiac Tempest 1964 - 1967

Specifications:

Part Type Coilover Spring and Shock Assembly
Proposition 65 www.P65Warnings.ca.gov
Warranty Time 1 YR

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QA1 Kit GM Pro Coil Alum S-Adj 10-400 Tapered Pigtail GS501-10400A: