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QA1 GD403-07450
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QA1 Pro Coil Rear Coil-Over System Double Adjustable Shock

122-GD403-07450

made in usa
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Save $10 off $199, $45 off $499, $100 off $999. Promo Code: FALLFUN exclusions apply

$705.80
QA1 Pro Coil Rear Coil-Over System Double Adjustable Shock $705.80
Out of stock
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Pro Coil Rear Coil-Over System
  • Double Adjustable Shock
  • 11.61" Compressed / 15.54" Extended Height
  • 7" Spring Free Length
  • Spring Rate: 450 lbs/in.
  • QA1 GD403-07450 Details

    Corvette C5 Double Adjustable Pro Coil Systems

    Features:
  • Truly independent compression and rebound adjustment.
  • 18 positions of rebound on one knob and 18 positions of compression on the other knob, providing 324 valving options.
  • One shock allows for the ultimate in fine-tuning for any application.

    Shock Mount Type:
  • Special Type Upper Mount
  • Special Type Lower Mount

  • Specifications:

    Collapsed Length (in.)
    11.61
    Bushing Material
    Polyurethane
    Bushing Color
    Black
    Hardware Included
    Yes
    Body Diameter (in.)
    2
    Gas Charged
    No
    Adjustable Mounting Bracket Included
    No
    Adjustable Valving
    Yes
    Coil-Over Kit Position
    Rear
    Coil-Over Springs Included
    Yes
    Crossmember Included
    No
    Internal Design
    Twin-tube
    Number of Valving Selections
    324
    Quantity
    Sold as a kit
    Shock Body Finish
    Natural
    Shock Body Material
    Aluminum
    Shocks Included
    Yes
    Spring Rate
    450 lbs./in.
    Suspension Height Adjustment (in.)
    1.0-2.2 lowered
    Welding Required
    No
    Extended Length (in.)
    15.5
    Spring Finish
    Silver powdercoated
    Upper Mount
    Eyelet
    Lower Mount
    Through bolt
    Manufacturer's Part Number:
    GD403-07450

    Do you have a high-performance street/strip GM? The QA1 Double Adjustable Pro Coil System is the most versatile direct bolt-in front suspension on the market. No cutting or welding... these coil-over systems are designed to work with stock suspension and stock control arms (mounting bolt/nut assembly modification may be required).

    Take control of your vehicle's ride height, and get the stance you want with double adjustable valving that allows simple switching between one type of driving to another. Unlike many other shocks, the valving between compression and rebound can be adjusted independently. 18 positions of rebound on one knob and 18 positions of compression on the other knob, providing 324 valving options.

    The Pro Coil System Includes:

    • Two Proma Star double adjustable coil-over shocks
    • Two Specially Designed Conical Springs
    • All Mounting Hardware

      Easy Bolt-In Installation - Minimal modifications to be made. Remove the existing shocks and springs and the QA1 Pro Coil System bolts right back in.

      Ride Height Adjustable - Threaded aluminum shock body allows ride height adjustment.

      Specially Designed Conical Springs - This spring is designed so that the lower end sets on the coil-over shock and the upper end sets in the original spring bucket in the frame. This allows for the use of a longer and lighter spring for more stored energy, offering increased weight transfer. Greater durability is also achieved by locating the spring pressure in the frame and not on a single stud.

      Features
    • Systems include shocks, springs (rates below), and mounting hardware
    • Easy, Bolt-In Installation - Stock Location Using Stock Mount
    • Ride Height Adjustable
    • Remote Ready
    • 100% Dyno Tested and Serialized
    • Rebuildable & Revalvable by QA1 or QA1-Authorized Service Centers
    • Some replacement shocks sold individually
    • Proudly Made in Lakeville, MN USA!




      GM Pro Coil Coil Over Conversion Kits are also available in Single Adjustable and Drag Race "R" Series





      Spring Style ''A''
      Pigtail End
      3.50'' Upper ID
      2.50'' Lower ID

      Spring Style ''B''
      Flat End
      3.50'' Upper ID
      2.50'' Lower ID

      Spring Style ''C''
      Flat End
      4.10'' Upper ID
      2.50'' Lower ID

    Does QA1 GD403-07450 fit your vehicle?

    Narrow Results

    2005-2007  CHEVROLET CORVETTE

    • Liter: 6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 364
    • EngineType: V8 ( 6 L / 364 )

    2008  CHEVROLET CORVETTE

    • Liter: 7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: 427 LIMITED EDITION Z06
    • Engine Vin: E
    • CUI: 427
    • EngineType: V8 ( 7 L / 427 )

    1997-2004  CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: G
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2003  CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: 50TH ANNIVERSARY EDITION
    • Engine Vin: G
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2011  CHEVROLET CORVETTE

    • Liter: 7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: Z06 CARBON
    • Engine Vin: E
    • CUI: 427
    • EngineType: V8 ( 7 L / 427 )

    2001-2004  CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: Z06
    • Engine Vin: S
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2010-2011  CHEVROLET CORVETTE

    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 376
    • EngineType: V8 ( 6.2 L / 376 )

    2010-2011  CHEVROLET CORVETTE

    • Liter: 6.2
    • Aspiration: SUPERCHARGED
    • SubModel: ZR1
    • Engine Vin: T
    • CUI: 376
    • EngineType: V8 ( 6.2 L / 376 )

    2010-2011  CHEVROLET CORVETTE

    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: GRAND SPORT
    • Engine Vin: W
    • CUI: 376
    • EngineType: V8 ( 6.2 L / 376 )

    2005-2007  CHEVROLET CORVETTE

    • Liter: 6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 364
    • EngineType: V8 ( 6 L / 364 )

    2003  CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: 50TH ANNIVERSARY EDITION PACE CAR
    • Engine Vin: G
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2009  CHEVROLET CORVETTE

    • Liter: 6.2
    • Aspiration: SUPERCHARGED
    • SubModel: ZR1
    • Engine Vin: R
    • CUI: 376
    • EngineType: V8 ( 6.2 L / 376 )

    2008-2009  CHEVROLET CORVETTE

    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 376
    • EngineType: V8 ( 6.2 L / 376 )

    1997-2004  CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1998  CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: INDIANAPOLIS 500 PACE CAR
    • Engine Vin: G
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2008-2011  CHEVROLET CORVETTE

    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 376
    • EngineType: V8 ( 6.2 L / 376 )

    2006-2011  CHEVROLET CORVETTE

    • Liter: 7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: Z06
    • Engine Vin: E
    • CUI: 427
    • EngineType: V8 ( 7 L / 427 )
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