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Qa1

QA1 73-77 GM A-Body Pro Rear Coil-Over System - MOD Series - 12in x 220lbs/in - Aluminum

SKU: QAPRCK52446

Coilover Kits

QAP Coil-Overs - Pro Coil...

Qa1

QA1 73-77 GM A-Body Pro Rear Coil-Over System - MOD Series - 12in x 220lbs/in - Aluminum

SKU: QAPRCK52446

Coilover Kits

QAP Coil-Overs - Pro Coil...

A$4,360.74
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Don't be limited to adjustments! Completely re-valve in minutes with the MOD Series shock. Designed specifically to meet the demands required by today's high performance drag race and handling/pro-touring cars, QA1's multi-patent-pending MOD Series shock will transform the way racers respond to changing track conditions and configurations. The key element to this tunability is QuickTune Technology: dry modular valve packs that can easily be swapped out, all while the shock remains on the car. An industry first, the MOD Series shock can quickly and easily be revalved without interrupting the oil path or opening the shock up for debris and air contamination. Medium compression and rebound valve packs come standard

Product Overview

soft or firm compression and rebound valve packs also available. Once the desired valving is in place, the unique double adjustable design, with adjustable low-speed bleed, allows for fully independent control over the compression and rebound characteristics. With all these adjustability options, the MOD Series shock achieves an expansive force curve capability and an unprecedented level of tunability. The shock also features mounting adjustability to accommodate a variety of vehicles and mounting configurations. The nitrogen-charged canister is available in a piggyback or remote configuration for ease of installation in tight areas, and the base eyelet is indexable, so you can unbolt it and reattach it at the angle you need for the best shock and canister placement. Like all QA1 shocks, the MOD Series shock is 100% dyno tested and serialized and proudly made in QA1's Lakeville, Minnesota facility.


Features and Benefits

  • Achieve 1/2 higher than stock down to 2.25" lower than stock.
  • Ultimate balance of ride quality and performance handling with adjustable rebound and compression valving.
  • Limited Lifetime Warranty for peace of mind.
  • Sold as a pair.
  • Proudly made in the USA.

Product Details

Active or Passive Suspension:Passive
Adjustable Compression:Yes
Adjustable Rebound:Yes
Adjustable Ride Height:Yes
Assembled:No
Brand:QA1
Description:QA1 73-77 GM A-Body Pro Rear Coil-Over System - MOD Series - 12in x 220lbs/in - Aluminum
Grade Type:Performance
Internal Construction Type:Dual Tube
Manufacturer Part Number:RCK52446
Part Number:qapRCK52446
Prop 65 - Short Label:WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
Prop 65 Yes/No:Yes
Remote Reservoir:Yes
Spring Color:Silver
Spring Material:High Tensile Chrome Silicon
Title:QA1 Shock Absorber and Coil Spring Assembly RCK52446
UPC:806990155078

Kit Options

This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.

Kit option/s:

Thumb SKU Kit Title
qapBW03-GMA3 QA1 Level 3 Big Wheel Kits BW03-GMA3 Suspension Handling Packages, Kits, Coilovers, Trailing Arms, Control Arms, Sway Bars, Buick, Chevrolet, Oldsmobile, Pontiac, Kit
qapHK23-GMA3 QA1 73-77 GM A-Body Level 3 Handling Kit 2.0 w/ Shocks (1x qap5208, 1x qap5247, 1x qap52518, 1x qap5252, 1x qap52520, 1x qap52893, 1x qap52894, 1x qap9039-308, 1x qapMG401-10650C, 1x qapRCK52446, 1x qapT121W)

Part Type

Coilover Set

Data: v4.2 - Upd: 2026-10-15 16:42:44

Features

  • Achieve 1/2 higher than stock down to 2.25" lower than stock.
  • Limited Lifetime Warranty for peace of mind.
  • Proudly made in the USA.
  • Sold as a pair.
  • Ultimate balance of ride quality and performance handling with adjustable rebound and compression valving.

Specifications

Product Attributes - Brand
QA1
Product Attributes - Manufacturer's Part Number
RCK52446
Product Attributes - Part Type
Coilover Kits
Product Attributes - Product Line
QA1 Rear MOD Coilover Conversion Systems
Product Attributes - UPC
806990155078
Product Attributes - Coilover Kit Position
Rear
Product Attributes - Adjustable Valving
Yes
Product Attributes - Number of Valving Selections
324
Product Attributes - Shocks Included
Yes
Product Attributes - Internal Design
Twin-tube
Product Attributes - Coilover Springs Included
Yes
Product Attributes - Spring Rate (lbs./in.)
220 lbs./in.
Product Attributes - Suspension Height Adjustment
0.0-1.5 in. lowered
Product Attributes - Gas Charged
Yes
Product Attributes - Extended Length (in.)
16.88
Product Attributes - Collapsed Length (in.)
11.50
Product Attributes - Upper Mount
Eyelet
Product Attributes - Lower Mount
Eyelet
Product Attributes - Body Diameter (in.)
2.000
Product Attributes - Shock Body Material
Aluminum
Product Attributes - Shock Body Finish
Black/Red
Product Attributes - Bushing Material
Spherical bearing
Product Attributes - Bushing Color
Black
Product Attributes - Spring Finish
Gray/Silver
Product Attributes - Crossmember Included
No
Product Attributes - Adjustable Mounting Bracket Included
Yes
Product Attributes - Hardware Included
Yes
Product Attributes - Welding Required
No
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Double adjustable coilovers. Includes 2 springs and 2 coilover shocks with necessary hardware. The base eyelet is indexable, so you can unbolt and reattach at the angle you need for the best shock and canister placement.

Reference Information

Brand Name/s Qa1
StreetFX SKU qapRCK52446
SFX Item ID 4095231
Supplier Item Code 4095231
Manufacturer SKU RCK52446
Manufacturer UPC 806990155078
Alternative References qa1, QA1-RCK52446, 12in, 220lbs/in

Compatibility

Application Data
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1973
    Ending Year1974
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyBuick V8
    DrivetrainRWD
    Engine VIN CodeH
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1973
    Ending Year1974
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyBuick V8
    DrivetrainRWD
    Engine VIN CodeJ
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1973
    Ending Year1974
    Engine TypeV8
    CC7456
    CID455
    Liter7.5
    Engine Size7.5L/455
    Engine FamilyBuick V8
    DrivetrainRWD
    Engine VIN CodeT
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1973
    Ending Year1974
    Engine TypeV8
    CC7456
    CID455
    Liter7.5
    Engine Size7.5L/455
    Engine FamilyBuick V8
    DrivetrainRWD
    Engine VIN CodeU
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1973
    Ending Year1974
    Engine TypeV8
    CC7456
    CID455
    Liter7.5
    Engine Size7.5L/455
    Engine FamilyBuick V8
    DrivetrainRWD
    Engine VIN CodeV
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1973
    Ending Year1974
    Engine TypeV8
    CC7456
    CID455
    Liter7.5
    Engine Size7.5L/455
    Engine FamilyBuick V8
    DrivetrainRWD
    Engine VIN CodeW
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1974
    Ending Year1974
    Engine TypeV8
    CC7456
    CID455
    Liter7.5
    Engine Size7.5L/455
    Engine FamilyBuick V8
    DrivetrainRWD
    Engine VIN CodeP
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1974
    Ending Year1974
    Engine TypeV8
    CC7456
    CID455
    Liter7.5
    Engine Size7.5L/455
    Engine FamilyBuick V8
    DrivetrainRWD
    Engine VIN CodeR
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1975
    Ending Year1977
    Engine TypeV6
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN CodeC
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1975
    Ending Year1977
    Engine TypeV8
    CC5733
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeH
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1975
    Ending Year1977
    Engine TypeV8
    CC5733
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeJ
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1977
    Ending Year1977
    Engine TypeV8
    CID305
    Liter5.0
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeU
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1977
    Ending Year1977
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeL
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1977
    Ending Year1977
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeR
  • MakeBUICK
    ModelREGAL
    SubmodelSR
    Beginning Year1976
    Ending Year1977
    Engine TypeV6
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN CodeC
  • MakeBUICK
    ModelREGAL
    SubmodelSR
    Beginning Year1976
    Ending Year1977
    Engine TypeV8
    CC5733
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeH
  • MakeBUICK
    ModelREGAL
    SubmodelSR
    Beginning Year1976
    Ending Year1977
    Engine TypeV8
    CC5733
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeJ
  • MakeBUICK
    ModelREGAL
    SubmodelSR
    Beginning Year1977
    Ending Year1977
    Engine TypeV8
    CID305
    Liter5.0
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeU
  • MakeBUICK
    ModelREGAL
    SubmodelSR
    Beginning Year1977
    Ending Year1977
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeL
  • MakeBUICK
    ModelREGAL
    SubmodelSR
    Beginning Year1977
    Ending Year1977
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeR
  • MakeCHEVROLET
    ModelCHEVELLE
    SubmodelDELUXE
    Beginning Year1973
    Ending Year1973
    Engine TypeL6
    CC4097
    CID250
    Liter4.1
    Engine Size4.1L/250
    Engine FamilyGM inline 6-cylinder
    DrivetrainRWD
    Engine VIN CodeD
  • MakeCHEVROLET
    ModelCHEVELLE
    SubmodelDELUXE
    Beginning Year1973
    Ending Year1973
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeH
  • MakeCHEVROLET
    ModelCHEVELLE
    SubmodelDELUXE
    Beginning Year1973
    Ending Year1973
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeJ
  • MakeCHEVROLET
    ModelCHEVELLE
    SubmodelDELUXE
    Beginning Year1973
    Ending Year1973
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeK
  • MakeCHEVROLET
    ModelCHEVELLE
    SubmodelDELUXE
    Beginning Year1973
    Ending Year1973
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeL

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