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Qa1

QA1 78-88 GM G-Body Pro Rear Coil-Over System - Single Adj. - 12in x 170lbs/in - Aluminum

SKU: QAPRCK52351

Coilover Kits

QAP Coil-Overs - Pro Coil...

Qa1

QA1 78-88 GM G-Body Pro Rear Coil-Over System - Single Adj. - 12in x 170lbs/in - Aluminum

SKU: QAPRCK52351

Coilover Kits

QAP Coil-Overs - Pro Coil...

A$2,300.70
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Here's an easy way to convert your stock rear suspension to a coilover suspension. You get everything you need with these QA1 Rear Pro coilover systems, from shocks to nuts and bolts, complete installation instructions, and even decals!

Product Overview

QA1 offers bolt-in Rear Coil-Over Conversion Kits for 1978-1988 GM G-Bodies. These kits include specially designed USA made mounting brackets and single or double adjustable aluminum shocks, springs and all necessary hardware. Single adjustable shocks provide 18 positions of simultaneous rebound and compression adjustment while QA1's double adjustable shocks provide 18 positions of compression adjustment and 18 positions of rebound adjustment, for a total of 324 possible valving combinations. These shocks also utilize a fully threaded body allowing for ride height adjustability. Multiple spring rate options are also available, and have been successfully tested in various applications, from casual street driving to hard core race applications. With our highly popular adjustable struts and the addition of the Rear Coil-Over Conversion Kit, you can now get a complete suspension makeover for both ends of the vehicle. These lightweight billet aluminum coil-over shocks are made in the USA and offer easy, bolt-in installation and ride height adjustability. They are 100% dyno tested and serialized and serviceable and rebuildable by QA1 authorized service centers. Used in drag racing, street performance, autocross, road racing and street rod applications. Kit will lower the vehicle. Conversion Kit Note: Later model vehicles tend to weigh more on average. Please take this into account when ordering springs.


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 78-88 GM G-Body Pro Rear Coil-Over System - Single Adj. - 12in x 170lbs/in - Aluminum
Grade Type:Performance
Internal Construction Type:Dual Tube
Manufacturer Part Number:RCK52351
Part Number:qapRCK52351
Prop 65 - Short Label:WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
Prop 65 Yes/No:Yes
Remote Reservoir:No
Spring Color:Silver
Spring Material:High Tensile Chrome Silicon
Title:QA1 Shock Absorber and Coil Spring Assembly RCK52351
UPC:806990123459

Part Type

Coilover Set

Data: v4.2 - Upd: 2026-10-15 00:26:29

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
RCK52351
Product Attributes - Part Type
Coilover Kits
Product Attributes - Product Line
QA1 Rear Pro Coilover Conversion Systems
Product Attributes - UPC
806990123459
Product Attributes - Coilover Kit Position
Rear
Product Attributes - Adjustable Valving
Yes
Product Attributes - Number of Valving Selections
18
Product Attributes - Shocks Included
Yes
Product Attributes - Internal Design
Twin-tube
Product Attributes - Coilover Springs Included
Yes
Product Attributes - Spring Rate (lbs./in.)
170 lbs./in.
Product Attributes - Suspension Height Adjustment
0.0-1.5 in. lowered
Product Attributes - Gas Charged
No
Product Attributes - Extended Length (in.)
19.80
Product Attributes - Collapsed Length (in.)
13.60
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
Silver
Product Attributes - Bushing Material
Spherical bearing
Product Attributes - Bushing Color
Natural
Product Attributes - Spring Finish
Gray/Silver
Product Attributes - Crossmember Included
No
Product Attributes - Adjustable Mounting Bracket Included
No
Product Attributes - Hardware Included
Yes
Product Attributes - Welding Required
No
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Single adjustable coilovers. Includes 2 springs and 2 coilover shocks with necessary hardware.

Reference Information

Brand Name/s Qa1
StreetFX SKU qapRCK52351
SFX Item ID 4095192
Supplier Item Code 4095192
Manufacturer SKU RCK52351
Manufacturer UPC 806990123459
Alternative References qa1, QA1-RCK52351, 12in, 170lbs/in

Brochures

Compatibility

Application Data
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1978
    Ending Year1978
    Engine TypeV8
    CID305
    Liter5.0
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeU
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1978
    Ending Year1979
    Engine TypeV6
    CID196
    Liter3.2
    Engine Size3.2L/196
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN CodeC
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1978
    Ending Year1980
    Engine TypeV8
    CID305
    Liter5.0
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeH
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1978
    Ending Year1987
    Engine TypeV6
    CC3800
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN CodeA
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1979
    Ending Year1979
    Engine TypeV6
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN Code2
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1979
    Ending Year1979
    Engine TypeV8
    CID301
    Liter4.9
    Engine Size4.9L/301
    Engine FamilyPontiac V8
    DrivetrainRWD
    Engine VIN CodeY
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1979
    Ending Year1980
    Engine TypeV8
    CID301
    Liter4.9
    Engine Size4.9L/301
    Engine FamilyPontiac V8
    DrivetrainRWD
    Engine VIN CodeW
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1980
    Ending Year1981
    Engine TypeV8
    CID265
    Liter4.3
    Engine Size4.3L/265
    Engine FamilyPontiac V8
    DrivetrainRWD
    Engine VIN CodeS
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1981
    Ending Year1985
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile diesel V8
    DrivetrainRWD
    Engine VIN CodeN
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1982
    Ending Year1984
    Engine TypeV6
    CID252
    Liter4.1
    Engine Size4.1L/252
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN Code4
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1982
    Ending Year1984
    Engine TypeV6
    CID260
    Liter4.3
    Engine Size4.3L/260
    Engine FamilyGM diesel V6
    DrivetrainRWD
    Engine VIN CodeV
  • MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year1986
    Ending Year1987
    Engine TypeV8
    CID307
    Liter5.0
    Engine Size5.0L/307
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeY
  • MakeBUICK
    ModelREGAL
    SubmodelCUSTOM
    Beginning Year1988
    Ending Year1988
    Engine TypeV6
    CID173
    Liter2.8
    Engine Size2.8L/173
    Engine FamilyGM V6
    DrivetrainFWD
    Engine VIN CodeW
  • MakeBUICK
    ModelREGAL
    SubmodelESTATE WAGON
    Beginning Year1982
    Ending Year1983
    Engine TypeV6
    CID252
    Liter4.1
    Engine Size4.1L/252
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN Code4
  • MakeBUICK
    ModelREGAL
    SubmodelESTATE WAGON
    Beginning Year1982
    Ending Year1983
    Engine TypeV6
    CC3800
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN CodeA
  • MakeBUICK
    ModelREGAL
    SubmodelESTATE WAGON
    Beginning Year1982
    Ending Year1983
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile diesel V8
    DrivetrainRWD
    Engine VIN CodeN
  • MakeBUICK
    ModelREGAL
    SubmodelGNX
    Beginning Year1987
    Ending Year1987
    Engine TypeV6
    CC3800
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN Code7
  • MakeBUICK
    ModelREGAL
    SubmodelGRAND NATIONAL
    Beginning Year1984
    Ending Year1985
    Engine TypeV6
    CC3800
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN Code9
  • MakeBUICK
    ModelREGAL
    SubmodelGRAND NATIONAL
    Beginning Year1986
    Ending Year1987
    Engine TypeV6
    CC3800
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN Code7
  • MakeBUICK
    ModelREGAL
    SubmodelLIMITED
    Beginning Year1978
    Ending Year1978
    Engine TypeV8
    CID305
    Liter5.0
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeU
  • MakeBUICK
    ModelREGAL
    SubmodelLIMITED
    Beginning Year1978
    Ending Year1979
    Engine TypeV6
    CID196
    Liter3.2
    Engine Size3.2L/196
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN CodeC
  • MakeBUICK
    ModelREGAL
    SubmodelLIMITED
    Beginning Year1978
    Ending Year1980
    Engine TypeV8
    CID305
    Liter5.0
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeH
  • MakeBUICK
    ModelREGAL
    SubmodelLIMITED
    Beginning Year1978
    Ending Year1987
    Engine TypeV6
    CC3800
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN CodeA
  • MakeBUICK
    ModelREGAL
    SubmodelLIMITED
    Beginning Year1979
    Ending Year1979
    Engine TypeV6
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN Code2
  • MakeBUICK
    ModelREGAL
    SubmodelLIMITED
    Beginning Year1979
    Ending Year1979
    Engine TypeV8
    CID301
    Liter4.9
    Engine Size4.9L/301
    Engine FamilyPontiac V8
    DrivetrainRWD
    Engine VIN CodeY

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