$104 Off

QA1 GD401-10550C GM Pro Coil, Double Adj, 550 Tapered Flat, Large

$104 Off

QA1 GD401-10550C GM Pro Coil, Double Adj, 550 Tapered Flat, Large
QA1

|

#721GD40110550C

QA1 GD401-10550C GM Pro Coil, Double Adj, 550 Tapered Flat, Large

  • These QA1 GM Pro Coil Systems are a great option for anyone looking for fully adjustable ride height and valving control
  • These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling
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Spring Rate:

550 lbs.

350 lbs.400 lbs.450 lbs.500 lbs.650 lbs.750 lbs.

$964.95

/kit

Factory Shipped

$1,069.01

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Product Summary

Buick, Chevy, GMC, Oldsmobile, Pontiac, Front Position

  • These QA1 GM Pro Coil Systems are a great option for anyone looking for fully adjustable ride height and valving control
  • These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling
  • Specially designed for QA1's Pro Coil Systems, the American-made lightweight high travel springs have fewer coils and a smaller wire diameter, resulting in increased travel due to the larger distance between the coils
  • They reduce unsprung weight and react faster, optimizing suspension performance
  • Multiple spring rate options are also available and have been successfully tested in various applications, from casual street driving to hard core race applications
See more details

Key Specs

PositionFront
Spring Rate550 lbs.
Shock AdjustabilityDouble Adjustable
Shock TypeTwin Tube
Shock Body MaterialAluminum
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QA1 GD401-10550C Details

  • These QA1 GM Pro Coil Systems are a great option for anyone looking for fully adjustable ride height and valving control
  • These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling
  • Specially designed for QA1's Pro Coil Systems, the American-made lightweight high travel springs have fewer coils and a smaller wire diameter, resulting in increased travel due to the larger distance between the coils
  • They reduce unsprung weight and react faster, optimizing suspension performance
  • Multiple spring rate options are also available and have been successfully tested in various applications, from casual street driving to hard core race applications
  • Lightweight Billet Aluminum Coil-Over Shocks
  • High Travel Springs
  • Easy, Bolt-In Installation
  • Ride Height Adjustable
  • 100% Dyno Tested and Serialized, Serviceable and Rebuildable by QA1 Authorized Service Centers
  • Made in the USA
  • Used in drag racing, street performance, autocross, road racing and street rod applications
  • Sold in Pairs

QA1 GD401-10550C Specifications

KEY SPECS
MFG. Part #GD401-10550C
BrandQA1
PositionFront
Spring Rate550 lbs.
Shock AdjustabilityDouble Adjustable
Shock TypeTwin Tube
Shock Body MaterialAluminum
Shock Stroke4.00
Upper Shock MountStud
Lower Shock MountT-Bar
Height AdjustableYes
FinishPowder Coated
GENERAL
Compressed Length Range8.00" to 8.99"
Compressed Length8.63"
Extended Length Range12.00" to 12.99"
Extended Length12.88"
Number of Valving Selections324
Coilover Springs IncludedYes
Bushing MaterialPolyurethane
Body Diameter2.00"
Sold in QuantityPair
AdjustableYes
Hardware IncludedYes
Crossmember IncludedNo
Welding RequiredNo
Gas ChargedNo
ColorSilver
Mounting Bracket IncludedNo
Suspension Height Adjustment0.0-2.0 Inch Lowered
Spring FinishPowder Coated
Recommended Front End Weight2,101-2,200 lbs.
NotesDesigned to fit applications with big block engines. Coilover shocks are double adjustable Pro series GD401 shocks. Springs are 10 tapered with a large diameter, flat upper end style 10HTBF550 springs.
GTIN Code806990062604
Adjustable ValvingYes
Adjustable Mounting Bracket IncludedNo
Bushing ColorBlack
Lower MountBar pin
Upper MountStud

Questions & Answers

1 Question • 1 Answer

How high can you adjust these? Whats the front end weight ? I have a 1956 Chevy truck with a 1975 Malibu front chip with a 396 big block well these work on that set up ? And could you Maybe tell me Tell me how high the frame from the ground might increase because i'm to low now has to come up. Thank You Ralph

by ralph

• 7 years ago

1 answer

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1 of 1 questions shown

Fitment

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