-9%
Sold out
QA1 QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 500lbs/in - Pigtail - Aluminum
QA1 QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 500lbs/in - Pigtail - Aluminum
QA1 QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 500lbs/in - Pigtail - Aluminum
QA1 QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 500lbs/in - Pigtail - Aluminum
Click to zoom in

QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 500lbs/in - Pigtail - Aluminum

QA1
QAPGS401-10500A
806990062031
Coilovers
Out of stock
$ 830.83 $ 749.95

SKU: GS401-10500A | UPC: 806990062031

QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 500lbs/in - Pigtail - Aluminum for 1955-1957 Chevrolet

Upgrade your 1955-1957 Chevrolet passenger car with the QA1 GS401-10500A Pro Front Coil-Over System sold as a pair. This single adjustable setup delivers precise valving control and ride height tuning via fully threaded aluminum bodies. High travel springs and lightweight design improve handling in drag racing, street performance, autocross and road racing.

Key Features

  • Single Adjustable Valving: Tune compression and rebound simultaneously to match your driving style from street to track.
  • Lightweight Aluminum Body: Reduces unsprung weight for quicker response and better suspension performance, 20.63in extended, 10.63in compressed, 10in travel.
  • High Travel Springs: 10in tall 500lbs/in chrome silicon steel pigtail springs with fewer coils for increased travel and faster reaction.
  • Ride Height Adjustable: Fully threaded body allows precise stance and weight balance adjustments without disassembly.
  • Bolt-In Design: Direct fit for 55-57 Chevy factory control arms, 100% dyno tested, serialized, serviceable by QA1 centers, made in USA.

Product Notes

  • Sold as a pair for complete front suspension upgrade.
  • Rebuildable at QA1 authorized service centers for long-term durability.
  • Package weight 20 lbs, ships in protective box measuring 26in x 14in x 14in.

Installation Notes

  • Professional installation recommended.
  • Bolts directly to OEM upper and lower control arms, no welding required.
  • Stud upper mount and pigtail lower end, verify shock length matches factory geometry.

This Part Fits

Year Make Model Submodel
1955 Chevrolet 150 Series All
1955 Chevrolet 210 Series All
1955 Chevrolet Bel Air All
1956 Chevrolet 150 Series All
1956 Chevrolet 210 Series All
1956 Chevrolet Bel Air All
1957 Chevrolet 150 Series All
1957 Chevrolet 210 Series All
1957 Chevrolet Bel Air All

Why Choose QA1?

  • Proven in drag racing, road racing and street rod applications nationwide.
  • Every shock dyno tested and serialized for consistent quality.
  • Engineered in USA with rebuildable design for racing reliability.

Frequently Asked Questions

  • Q: Does this fit 1955-1957 Chevrolet trucks?
    A: Designed for passenger cars including 150, 210 and Bel Air series, confirm suspension geometry for trucks.
  • Q: What material are the shocks and springs?
    A: Billet aluminum shock bodies with chrome silicon high travel springs for lightweight strength.
  • Q: What warranty coverage applies?
    A: QA1 offers limited lifetime warranty on valving, full details on qa1.net.

Shipping & Handling

  • Method: UPS Ground or FedEx
  • Availability: In stock - ships same or next business day
  • Packaging: Secure pair box 26in x 14in x 14in
  • Weight: 20 lbs

Request For Information

Have questions about QA1 GM Pro Front Coil-Over System - Single Adj. - 10in x 500lbs/in - Pigtail - Aluminum? Fill out the form below and we'll get back to you by the next business day.
Coilovers

Coilovers

Coilovers from KW Suspension, Bilstein, FOX, ICON Vehicle Dynamics, Ohlins, Silver's NEOMAX, BC Racing, Fortune Auto, Ridetech, QA1, H&R, and Eibach are stocked at Black Ops Auto Works for street cars, track cars, off-road trucks, lift-application SUVs, and classic muscle car conversions. Every product is filterable by year, make, model, trim, and drivetrain so the correct coilover kit ships the first time. Black Ops Auto Works carries 1,646 coilover SKUs across non-adjustable, single-adjustable, double-adjustable, and remote-reservoir categories. What This Collection Covers A coilover combines a shock absorber and coil spring into a single adjustable unit with a threaded body for ride height adjustment. Coilovers offer purpose matched spring rates and damper valving that a lowering spring on a factory shock cannot replicate. Product Categories Non-adjustable coilovers, single-adjustable coilovers, double-adjustable coilovers, remote-reservoir coilovers, off-road lift coilov...

View Coilovers Products
Coilovers & Components

Coilovers & Components

Coilovers and coilover components are stocked at Black Ops Auto Works for trucks, SUVs, muscle cars, and street performance builds. Shop complete coilover kits, coilover springs, lowering springs, shock boots, dampening adjustment extenders, and suspension hardware for Ford, Toyota, Chevrolet, Jeep, Dodge, and Porsche platforms. Every product is filterable by year, make, model, trim, and drivetrain so the correct coilover setup ships the first time. Black Ops Auto Works carries 2,259 coilover and component SKUs across street, off-road, and track categories. What This Collection Covers Coilovers combine a coil spring and a shock absorber into a single adjustable unit, giving control over ride height and, on many models, damping stiffness. This collection also includes the individual components used to service, upgrade, or protect an existing coilover system. Product Categories Complete coilover kits, individual coilover shocks, coilover springs, lowering springs, protective shock...

View Coilovers & Components Products
QA1

QA1

QA1 suspension parts are stocked at Black Ops Auto Works for American muscle cars and classic trucks. Shop coilover kits, shock absorbers, springs, handling kits, four link systems, sway bars, strut kits, rod ends, and suspension hardware for the Mustang, Camaro, Corvette, Challenger, Charger, and GM B-Body, F-Body, and G-Body platforms. Every product is filterable by year, make, model, trim, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 536 QA1 SKUs across coilovers, shocks, springs, and handling kit categories. What This Brand Covers QA1 is a suspension manufacturer known for adjustable coilover systems, shock absorbers, and complete handling kits built for muscle cars, classic trucks, drag cars, and pro touring builds. The lineup covers everything from single component shock replacement to full vehicle handling packages. Brand Focus QA1 concentrates on American muscle car and classic truck platforms, with deep coverage of GM, Ford, and ...

View QA1 Products
Suspension

Suspension

Suspension parts and complete kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, chassis bracing, alignment hardware, air suspension, and complete stage kits from Bilstein, KW, Ohlins, Fox, KING, ICON, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Start with a matched shock and spring package or a full coilover kit, then layer in sway bars, chassis bracing, and camber adjustment hardware. Every part is filterable by year, make, model, trim, and drivetrain to confirm fitment before ordering. What This Category Covers Suspension is the highest-leverage handling upgrade on any vehicle. A properly matched shock, spring, and sway bar package produces measurable i...

View Suspension Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×