QA1 GS401-10550C Pro Coil Front Coilover System Single Adjustable 550 lb/in Spring

(Chevrolet Silverado 1500 1999-2006, S10 1982-2004, Malibu 1973-83, C1500 1990-98, Chevelle 1973-83, El Camino 1973-87, Monte Carlo 1973-88 + 21 more models)

Manufacturer

Part Number

GS401-10550C

9 reviews

Sale Price

$789.95

In Stock (6)

Usually delivered within 2 days

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Show details for QA1 GS401-10550C Pro Coil Front Coilover System Single Adjustable 550 lb/in Spring

Picture of QA1 GS401-10550C Pro Coil Front Coilover System Single Adjustable 550 lb/in Spring

QA1 GS401-10550C Pro Coil Front Coilover System Single Adjustable 550 lb/in Spring — image 1

QA1 GS401-10550C Pro Coil Front Coilover System Single Adjustable 550 lb/in Spring — image 2

QA1 GS401-10550C Pro Coil Front Coilover System Single Adjustable 550 lb/in Spring — image 3

QA1 GS401-10550C Pro Coil Front Coilover System Single Adjustable 550 lb/in Spring — image 4

Product Details

The QA1 GS401-10550C Pro Coil System is a complete front coilover conversion kit designed for muscle car enthusiasts seeking improved stance, ride quality, and performance. This bolt-in system features single-adjustable shocks with high-travel coil springs, providing both ride height and damping adjustability for street or track use.

Key Features:

Single adjustable valving with simultaneous rebound and compression adjustment for optimal ride and handling balance
Up to 2 inches of ride height adjustability via threaded spring seat for perfect stance control
Lightweight billet aluminum shock bodies with clear anodized finish
10-inch high-travel tapered springs with 550 lb/in rate, featuring smaller wire diameter for reduced unsprung weight
Shock travel: 9 inches compressed / 12.8 inches extended
100% dyno tested and serialized for quality assurance
Compatible with factory stamped steel control arms or QA1 tubular control arms
Made in the USA (Lakeville, Minnesota)
Includes all mounting hardware for easy bolt-in installation

This complete kit includes two single-adjustable shocks, two specially designed 10HTBF550 springs with silver powder-coated finish, and all necessary mounting hardware. The high-travel spring design features fewer coils than conventional springs, allowing greater usable stroke and more efficient damper operation. Adjustments are easily made with a simple turn of the spring seat nut for ride height or the valving adjuster for fine-tuning suspension response. Eligible for QA1's Limited Lifetime Warranty when registered.

Products specifications

Fits

Chevrolet Silverado 1500 1999-2006, S10 1982-2004, Malibu 1973-83, C1500 1990-98, Chevelle 1973-83, El Camino 1973-87, Monte Carlo 1973-88, Nova 1975-79; Pontiac Grand Prix 1973-87, Grand Am 1973-75, 1978-80, Bonneville 1978-87 + 17 more models

Adjustable Mounting Bracket Included

Adjustable Valving

Yes

Coil-Over Kit Position

Front

Coil-Over Springs Included

Yes

Compressed Height

Crossmember Included

Extended Height

12.8

Gas Charged

Internal Design

Twin-tube

Notes

Designed to fit Big Block engines. Shocks are remote ready, they can be used with the QA1 two or four channel remote adjustable system.

Number of Valving Selections

Quantity

Sold as a kit.

Recommended Front-End Weight

2,101-2,300 lbs.

Ref No

Shock Body Finish

Clear anodized

Shock Body Material

Aluminum

Shocks Included

Yes

Spring Finish

Silver powdercoated

Spring Rate (lbs/in)

550 lbs./in.

Suspension Height Adjustment

Stock

Welding Required

Prop 65

WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov

Title

QA1 Coilover Spring and Shock Assembly GS401-10550C

Great customer service and support. a live person answered the phone and was able to reccomend the correct product for my vehicle. Best price online too........i woould most absolutely use them again! Great company!

get3

Right item, right price !

Rosales

Lowest prices of what I was looking for and super fast shipping!!

Nursepink

Great prices, great service, fast shipping!

socaldmax

Fast service

Josh

Autoplicity best price on the web,FAST delivery, ordered wed. afternoon and received friday. AAAA++ RATING Will be ording from in the near future.

rambunctious

SO far, so good. We ordered a new Weathertech Trunk Liner from Autoplicity for our new VW SportWagen. We were pleased to find exactly what we were looking for for $50 less than other locations.

LRubado

Great merchant! I would most certainly would do business with them again. Customer Service was extremely helpful and my order shipped quickly.

Hippeechic

Oh my god, my car rips now. Scary improvement. Will buy again, and aeromotive will have my lifetime support. Much love!!!

sc300fivespd

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