Adjustable Coilover Kit, 13 to 13-1/2in. Ride Height

QA1

$649.95 - $849.95
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The QA1 Coilover Shock and Spring Packages offer a convenient, easy to order, pair of shocks and their corresponding springs.  These kits combine our best selling shocks and springs together as one package that makes ordering more convenient and streamlined.  Also included are a set of spanner wrenches and thrust bearings to make your ride height adjustments, and ensure you have everything you need to finish the job. Select from either single or double adjustable valving, along with your required spring rate, and you have a quick and easy way to equip your vehicle with coilovers!

What shock valving is best for me?

Adjustability is a key differentiator between single and double adjustable shocks. Single adjustable shocks adjust compression and rebound damping simultaneously, from one adjustment knob. So every click of compression is also a click of rebound. In contrast, double adjustable shocks allow for independent adjustment of both compression and rebound damping from separate adjustment knobs. This provides greater overall adjustability and customization potential.  

SINGLE ADJUSTABLE SHOCKS AT A GLANCE:

  • Ease of Use: Simple shock tuning.  Simply firm or soften the ride quality with the turn of the 18 click adjustment knob
  • Improved Driving Experience: Tune your shocks firm for a track day or sprited driving, or soften them up for a comfortable cruise
  • Typical Uses: Great for street cars, cruisers, or casual track day enthusiasts

DOUBLE ADJUSTABLE SHOCKS AT A GLANCE:

  • Precision Tuning: Independent adjustment of compression and rebound damping with 18 clicks of adjustment on each knob
  • Enhanced Performance: More tunability to acheive better traction and handling
  • Typical Uses: Adaptable to a wide range of applications from high performance race cars, to casual street drivers that love to fine tune their ride
 
 

What Spring Rate do I need?

Spring rate selection can be very subjective and can vary depending on multiple variables and uses.  The below chart information would be for most street driven cars with typical suspension configurations.

10" Springs and 4" Shocks Spring Rate Charts

Front Axle Weight Recommended Spring Rate
1000-1300 350
1300-1500 400
1500-1800 500
1800-2100 600

Rear Axle Weight Recommended Spring Rate
900-1100 175
1100-1300 200
1300-1600 250
1600-1900 300
1900+ 350

 

Common Vehicle Weights

Average GM Muscle Car weights:

Year Model Front Rear Total
1964-1972 A-Body 1850 1700 3550
1973-1977 A-Body 2175 1650 3825
1978-1988 A/G-Body 1900 1550 3450
1967-1969 F-Body 1750 1500 3250
1970-1981 F-Body 1800 1600 3400
1968-1974 X-Body 1750 1500 3250
1982-2004 S-Series Pickup 1900 1700 3600
1955-1957 Chevrolet Sedan 1900 1775 3675
1958-1970 GM B-Body 2025 1950 3975
1971-1990 GM B-Body 1925 1800 3725
1991-1996 GM B-Body 2175 1825 4000

Additional weight averages for popular vehicle models:

Year Model Front Rear
To 1927 Ford Coupe 1200 1300
1928-1931 Ford Coupe 1300 1400
1932-1934 Ford Coupe 1400 1600
1935-1938 Ford Coupe 1600 1700
1939-1940 Ford Coupe 1700 1800
1932-1938 Chev., Mopar Coupe 1500 1550
1939-1940 Chev., Mopar Coupe 1600 1600
1946-1948 Ford Coupe 1700 1750
1947-1954 Chev. Pickup 1950 1450

Fitment Notes

  • Because of their overall travel, this particular shock package is generally not recommended in most solid axle applications
  • The eyelets provided measure 1.25in. in width, and include mounting sleeves for 1/2in. and 5/8in. hardware
  • Spanner wrenches and thrust bearings are provided standard in this kit

Specifications

  • Spring Length10in.
  • Compressed Length11-1/8in.
  • Extended Length15in.
  • Recommended Ride Height Range13 to 13-1/2in.
  • Upper MountBushing
  • Lower MountBushing