QA1 GD501-10550A GM Pro Coil, Double Adj, 550 Tapered Pigtail

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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

$866.95

Factory Shipped

This part will be shipped by the manufacturer. We estimate this item will ship on or before June 7th.

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Product Summary

Buick, Chevy, 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

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Key Specs

Position	Front
Spring Rate	550 lbs.
Shock Adjustability	Double Adjustable
Shock Type	Twin Tube
Shock Body Material	Aluminum

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QA1 GD501-10550A 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

Guides & Documents

Coilovers Instruction Sheet (721GD50110550A)

CA Prop 65

QA1 GD501-10550A Specifications

KEY SPECS
MFG. Part #	GD501-10550A
Brand	QA1
Position	Front
Spring Rate	550 lbs.
Shock Adjustability	Double Adjustable
Shock Type	Twin Tube
Shock Body Material	Aluminum
Shock Stroke	5.00
Upper Shock Mount	Stud
Lower Shock Mount	T-Bar
Finish	Powder Coated

GENERAL
Speedway Motors Catalog Part #	721-GD50110550A
Compressed Length Range	11.00" to 11.99"
Compressed Length	11.63"
Extended Length Range	17.00" to 17.99"
Extended Length	17"
Number of Valving Selections	324
Coilover Springs Included	Yes
Bushing Material	Polyurethane
Sold in Quantity	Pair
Adjustable	Yes
Hardware Included	Yes
Crossmember Included	No
Welding Required	No
Gas Charged	No
Color	Silver
Mounting Bracket Included	No
Suspension Height Adjustment	0.0-2.0 Inch Lowered
Spring Finish	Powder Coated
Recommended Front End Weight	2,101-2,200 lbs.
Notes	Designed to fit applications with big block engines. Coilover shocks are double adjustable Pro series GD501 shocks. Springs are 10 tapered with a pigtail upper end style 10HTSP550 springs.
GTIN Code	806990062956
Adjustable Valving	Yes
Adjustable Mounting Bracket Included	No
Bushing Color	Black
Lower Mount	Bar pin
Upper Mount	Stud