null
QA1

QA1 Front Pro Coil Shock System GM 10" Spring 550LB./IN. - Single Adjustable

Part Number:
GS401-10550B
MPN:
GS401-10550B
Availability:
Ships from Manufacturer ( 1-2 Week Lead Time )
Shipping:
Free over $98 in U.S. 48
Type:
Front Suspension Systems
Shock Valving:
Single Adjustable
Spring Rate:
550lb/in.
Springs Included:
Yes
Quantity:
Sold as a System
Notes:
Spanner wrench: P/N T114W or T115W (required) Thrust Bearing Kits (optional): P/N 7888-109
  • QA1 Front Pro Coil Shock System GM 10" Spring 550LB./IN. - Single Adjustable (GS401-10550B)
  • QA1 Front Pro Coil Shock System GM 10" Spring 550LB./IN. - Single Adjustable (GS401-10550B)
  • QA1 Front Pro Coil Shock System GM 10" Spring 550LB./IN. - Single Adjustable (GS401-10550B)
  • QA1 Front Pro Coil Shock System GM 10" Spring 550LB./IN. - Single Adjustable (GS401-10550B)
  • QA1 Front Pro Coil Shock System GM 10" Spring 550LB./IN. - Single Adjustable (GS401-10550B)
  • QA1 Front Pro Coil Shock System GM 10" Spring 550LB./IN. - Single Adjustable (GS401-10550B)
$749.95

Description

QA1 Front Pro Coil Shock System GM 10" Spring 550LB./IN. - Single Adjustable

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.

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, Monte Carlo, 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. 

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. 

MADE IN THE USA

QA1 shocks are proudly made in Lakeville, Minnesota. 

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 eligible 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

YEARMODELSMALL BLOCK SPRINGSBIG 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
View AllClose

Warranty Information

QA1 warrants that the products will be free from defects in material and workmanship for one year from date of sale to the original purchaser. A limited lifetime warranty is offered on select shock absorbers. For registration and more information on the limited lifetime warranty, please visit www.QA1.net/Warranty. QA1 makes no other warranty of any kind, express or implied. QA1 shall have no obligation under the foregoing warranty where the defect is the result of improper or abnormal use, your negligence, vehicle accident, improper or incorrect installation or maintenance, nor when the product has been repaired or altered in any way. QA1's liability in the case of defective products subject to the foregoing warranty shall be limited to the repair or replacement, at QA1's option, of the defective products. Consequential or incidental damages are not recoverable under this warranty. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary from state to state. QA1, in its sole discretion, shall determine whether or not any Eligible Product is defective or otherwise covered by this warranty. If the Eligible Product fails to perform properly due to defective materials or workmanship, QA1 will at its option either (i) repair the Eligible Product without charge, or (ii) replace the Eligible Product. If the Eligible Product is no longer available, QA1 will replace the Eligible Product with an equivalent product. No refunds will be provided. The warranty provided by QA1 does NOT apply if the Eligible Product fails to perform: due to cosmetic wear and tear from normal use; due to improper or abnormal use, abuse, neglect, negligence, vehicle accident, insufficient travel, improper or incorrect installation or maintenance; or when the Eligible Product has been repaired, replaced, substituted or altered in any way, or if used with parts other than genuine parts of QA1. QA1 is not responsible for installation or removal labor, or for any other repair charges associated with the Eligible Product. Customer pays shipping to QA1 for final determination on eligibility. Any repaired or replaced Eligible Product will be returned to customer excluding freight cost. QA1 shall not be liable for the loss of use of the Eligible Product, loss of time, inconvenience, commercial loss or any other indirect, consequential, special or incidental damages due to breach of the above limited lifetime warranty. QA1 makes no warranties of any kind, express or implied, other than as herein expressly provided, and specifically disclaims the implied warranties of merchantability and fitness for a particular purpose. Notwithstanding anything set forth herein to the contrary, QA1’s liability hereunder shall be limited to the purchase price of the Eligible Product.
View AllClose