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$1,525.80
QA1 MG507-09550D Mod Series GM Front Pro Coil System, 550 lb.
QA1 MG507-09550D Mod Series GM Front Pro Coil System, 550 lb.

QA1 MG507-09550D Mod Series GM Front Pro Coil System, 550 lb.

63-82 Chevy Corvette, 58-70 Chevy Bel Air, 66-70 Chevy Caprice, 58-70 Chevy Impala

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QA1 MG507-09550D Mod Series GM Front Pro Coil System, 550 lb.
QA1 MG507-09550D Mod Series GM Front Pro Coil System, 550 lb.
QA1 MG507-09550D Mod Series GM Front Pro Coil System, 550 lb.
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QA1 MG507-09550D Mod Series GM Front Pro Coil System, 550 lb.
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We estimate this item will ship on or before April 3rd.
Part # 721MG50709550D
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$1,525.80
$1,753.91
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Details

Position:
Front
Spring Rate:
550 lbs.
Shock Adjustability:
Double Adjustable
Shock Type:
Twin Tube
Shock Body Material:
Aluminum
Shock Body Size:
Large Body
Shock Body Type:
Threaded
Upper Shock Mount:
Stud
Lower Shock Mount:
Bushed Eyelet
Compressed Length Range:
9.00" to 9.99"
Compressed Length:
9.63"
Extended Length Range:
14.00" to 14.99"
Extended Length:
14.5"
Number of Valving Selections:
324
Finish:
Black anodized
Coilover Kit Included:
Yes
Coilover Springs Included:
Yes
Bushing Material:
Rubber
Body Diameter:
3"
Sold in Quantity:
Kit
Adjustable:
Yes
Hardware Included:
Yes
Crossmember Included:
No
Welding Required:
No
Gas Charged:
Yes
Mounting Bracket Included:
No
Spring Finish:
Powder Coated
Spring Color:
Silver
MFG. Part #:
MG507-09550D
GTIN Code:
806990154842

Info

The QA1 GM Pro Coil Systems are available for 1963-1982 Corvettes and for 1958-1970 Full Size Chevrolet vehicles, including Impalas, Bel Airs and Caprices. They a great option for anyone looking for fully adjustable ride height and valving control. Choose a spring rate and adjustability that fits your driving style, adjust the valving to match and you are on your way. 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.

Adjustable Pro Coil System Features:

  • MOD™ Series - independent compression and rebound double adjustable
  • 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

Additional MOD™ Series Features:

  • Features QuickTune™ technology - modular valve packs that allow for completely revalving the shock without having to remove it from the car!
    • Medium compression and rebound valve packs standard
    • Soft or firm compression and rebound valve packs also available
  • 24 click independent compression and rebound adjustment with low-speed bleed
  • Large solid piston (with blow-off valve) for improved driver feel and control with up to 1,600 lb. force
  • High-speed valving adjustment (coarse adjustment)—relates to shock operation during impact events, like hitting a pothole or curb 
  • Low-speed valving (fine-tune adjustments)—adjusts ride quality and weight transfer on corner entry/exit; more bleed for softer feel and less bleed for stiffer feel
  • Indexable base eyelet—multiple mounting position to optimize knob access and provide more mounting flexibility
  • Made to be used with bottom eyelet style mount in tubular control arms
  • Thrust bearings included

SPRING RATE CHART

The chart below is a general guideline for selecting spring rates for QA1's GM Front Pro Coil Shock Systems. Spring rates may vary depending on applications, usage, and personal preference.

FRONT AXLE WEIGHT IN LBS.
1901-2000 2101-2200 2301-2400
450 550 650

AVERAGE VEHICLE WEIGHT

Not sure what your vehicle weighs? See our detailed Spring Rate Chart with Vehicle Weights for general guidelines on determining the approximate weight of popular vehicles.

Application

Fits: 1963-1982 Corvettes; 1958-1970 Full-Size Chevrolet - includes Impala, Bel Air, Caprice

Part Numbers
Vehicle Weight MOD™ Series Adjustable
1901-2000 lbs. MG507-09450D
2101-2200 lbs. MG507-09550D
2301-2400 lbs. MG507-09650D

Notes

MOD™ Series Shock Installation and Quick Tuning Guide

MOD™ Series Pro Coil Installation Guide

**MOD™ Series shocks include thrust bearings, spanner wrenches sold separately

Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 5 business days for QA1 to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
Some parts are not legal for use in California or other states with similar laws/regulations

More Like This

Reviews

Q & A

Videos & Articles
  • In this episode, Project Chevelle gets coilovers and a much-needed altitude adjustment. Watch as we install QA1 bolt-on coilover kits front and rear, then dial in the perfect stance and shock settings. Our old Chevelle is really starting to look mean!
  • Learn the proper method of blocking a race car in this step-by-step procedure to follow when performing this task. Learn why consistency is important and a few "not-to-do's".
  • Speedway Motors employee Steve is back to work on his 1976 Chevrolet Laguna, this time installing a QA1 Coilover kit in his front suspension.
  • Product guru Jeff K. takes us along as he updates the suspension on his 1946 Ford Sedan Delivery with a set of fresh Mustang II coilovers following an unfortunate incident with a pothole.

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