$104 Off

QA1 GD401-10650B GM Pro Coil System, Double Adj, Tapered Flat

$104 Off

#721GD40110650B

QA1 GD401-10650B GM Pro Coil System, Double Adj, Tapered Flat

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

$964.95

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$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

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Key Specs

Position	Front
Spring Rate	650 lbs.
Shock Adjustability	Double Adjustable
Shock Type	Twin Tube
Shock Body Material	Aluminum

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QA1 GD401-10650B 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

Application

BUICK
GS 1970 - 1972
GS 400 1968 - 1969
GS 455 1970 - 1972
Skylark 1968 - 1972
Special 1968 - 1969
CHEVY
Chevelle 1968 - 1972
El Camino 1968 - 1972
GMC
Sprint 1971 - 1972
OLDSMOBILE
442 1968 - 1971
Cutlass 1968 - 1972
Vista Cruiser 1968 - 1972
PONTIAC
GTO 1968 - 1972
LeMans 1968 - 1972
Tempest 1968 - 1970

Guides & Documents

Coilovers Installation Instructions (721GD40110650B)

Warranty (QA1)

Technical Information (QA1)

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

QA1 GD401-10650B Specifications

KEY SPECS
MFG. Part #	GD401-10650B
Brand	QA1
Position	Front
Spring Rate	650 lbs.
Shock Adjustability	Double Adjustable
Shock Type	Twin Tube
Shock Body Material	Aluminum
Shock Stroke	4.00
Upper Shock Mount	Stud
Lower Shock Mount	T-Bar
Height Adjustable	Yes
Finish	Powder Coated

GENERAL
Compressed Length Range	8.00" to 8.99"
Compressed Length	8.63"
Extended Length Range	12.00" to 12.99"
Extended Length	12.88"
Number of Valving Selections	324
Coilover Springs Included	Yes
Bushing Material	Polyurethane
Body Diameter	2.00"
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	2,301-2,400 lbs.
Notes	Designed to fit applications with big block engines. Coilover shocks are double adjustable Pro series GD401 shocks. Springs are 10 tapered with a flat upper end style 10HTSF650 springs.
GTIN Code	806990120106
Adjustable Valving	Yes
Adjustable Mounting Bracket Included	No
Bushing Color	Black
Lower Mount	Bar pin
Upper Mount	Stud

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Fitment

1970-1972 Buick GS

1968-1969 Buick GS 400

1970-1972 Buick GS 455

1968-1972 Buick Skylark

1968-1969 Buick Special

1968-1972 Chevy Chevelle

1968-1972 Chevy El Camino

1971-1972 GMC Sprint

1968-1971 Oldsmobile 442

1968-1972 Oldsmobile Cutlass

1968-1972 Oldsmobile Vista Cruiser

1968-1972 Pontiac GTO

1968-1972 Pontiac LeMans

1968-1970 Pontiac Tempest