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Qa1

QA1 78-96 GM B-Body Pro Rear Coil-Over System - MOD Series - 12in x 300lbs/in - Aluminum

SKU: QAPRCK52454

Coilover Kits

QAP Coil-Overs - Pro Coil...

Qa1

QA1 78-96 GM B-Body Pro Rear Coil-Over System - MOD Series - 12in x 300lbs/in - Aluminum

SKU: QAPRCK52454

Coilover Kits

QAP Coil-Overs - Pro Coil...

A$4,362.47
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

QA1 MOD Series coilover conversion systems put the ability to re-valve your shocks—on your car—into the palm of your hand. These innovative shocks feature QuickTune Technology, an industry-first that provides the ability to adapt to any track, any conditions, any time. The technology consists of interchangeable, dry modular valve pack assemblies, that can be thought of as dozens of finely tuned shocks you can hold in the palm of your hand. They define the valving curve of the shocks, and can be changed without interrupting the oil pathways. Simply unscrew from the shock, bolt-in another one with a new pre-determined valving range—and you're ready to go. There's no mess, no contamination, no air intrusion, and no downtime waiting on someone to re-valve your shocks. Ideal for Circle Track and Street/Strip applications, the shocks are available in a variety of extended and collapsed length models to best fit your vehicle. You get everything you need with these QA1 Rear MOD systems, from shocks to nuts and bolts, complete installation instructions, and even decals!

Additional benefits and features of QA1 MOD Series shocks:

* All new design delivers force, control, and unmatched tenability
* Hard anodized aluminum bodies with PTFE—durable, non-galling surface
* Double-adjustable shocks with low-speed bleed adjustments
* Large solid piston (with blow-off valve)—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
* 24 clicks/settings—wider range of adjustment than comparable shocks
* Indexable base eyelet—multiple mounting position to optimize knob access and provide more mounting flexibility
* 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
* Piggyback or remote canister options
* Unique spring adjuster nut and tool
* Thrust bearings included
* Superior thermal performance, as oil is in constant contact with outer body
* One base shock can be upgraded over time to keep up with increased performance levels of your vehicle

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 78-96 GM B-Body Pro Rear Coil-Over System - MOD Series - 12in x 300lbs/in - Aluminum
Grade Type:Performance
Internal Construction Type:Dual Tube
Manufacturer Part Number:RCK52454
Part Number:qapRCK52454
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 RCK52454
UPC:806990155139

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
qapHK23-GMB5 QA1 94-96 GM B-Body Level 3 Handling Kit 2.0 w/ Shocks (1x qap5209, 1x qap52518, 1x qap5252, 1x qap52520, 1x qap5254, 1x qap52862, 1x qap52894, 1x qap9039-308, 1x qapMG507-10650C, 1x qapRCK52454, 1x qapT121W)

Part Type

Coilover Set

Data: v4.2 - Upd: 2026-10-15 16:42:25

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
RCK52454
Product Attributes - Part Type
Coilover Kits
Product Attributes - Product Line
QA1 Rear MOD Coilover Conversion Systems
Product Attributes - UPC
806990155139
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.)
300 lbs./in.
Product Attributes - Suspension Height Adjustment
0.0-1.5 in. lowered
Product Attributes - Gas Charged
Yes
Product Attributes - Extended Length (in.)
18.38
Product Attributes - Collapsed Length (in.)
12.50
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 qapRCK52454
SFX Item ID 4095237
Supplier Item Code 4095237
Manufacturer SKU RCK52454
Manufacturer UPC 806990155139
Alternative References qa1, QA1-RCK52454, 12in, 300lbs/in

Compatibility

Application Data
  • MakeBUICK
    ModelESTATE WAGON
    SubmodelBASE
    Beginning Year1978
    Ending Year1979
    Engine TypeV8
    CID403
    Liter6.6
    Engine Size6.6L/403
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeK
  • MakeBUICK
    ModelESTATE WAGON
    SubmodelBASE
    Beginning Year1978
    Ending Year1980
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyBuick V8
    DrivetrainRWD
    Engine VIN CodeX
  • MakeBUICK
    ModelESTATE WAGON
    SubmodelBASE
    Beginning Year1978
    Ending Year1980
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeR
  • MakeBUICK
    ModelESTATE WAGON
    SubmodelBASE
    Beginning Year1980
    Ending Year1980
    Engine TypeV8
    CID301
    Liter4.9
    Engine Size4.9L/301
    Engine FamilyPontiac V8
    DrivetrainRWD
    Engine VIN CodeW
  • MakeBUICK
    ModelESTATE WAGON
    SubmodelBASE
    Beginning Year1980
    Ending Year1983
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile diesel V8
    DrivetrainRWD
    Engine VIN CodeN
  • MakeBUICK
    ModelESTATE WAGON
    SubmodelBASE
    Beginning Year1981
    Ending Year1983
    Engine TypeV8
    CID307
    Liter5.0
    Engine Size5.0L/307
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeY
  • MakeBUICK
    ModelLESABRE
    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
    ModelLESABRE
    SubmodelBASE
    Beginning Year1978
    Ending Year1978
    Engine TypeV8
    CID403
    Liter6.6
    Engine Size6.6L/403
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeK
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1978
    Ending Year1979
    Engine TypeV8
    CID301
    Liter4.9
    Engine Size4.9L/301
    Engine FamilyPontiac V8
    DrivetrainRWD
    Engine VIN CodeY
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1978
    Ending Year1980
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyBuick V8
    DrivetrainRWD
    Engine VIN CodeX
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1978
    Ending Year1980
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeR
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1978
    Ending Year1981
    Engine TypeV6
    CC3800
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN CodeA
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1980
    Ending Year1980
    Engine TypeV8
    CID301
    Liter4.9
    Engine Size4.9L/301
    Engine FamilyPontiac V8
    DrivetrainRWD
    Engine VIN CodeW
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1980
    Ending Year1981
    Engine TypeV6
    CID252
    Liter4.1
    Engine Size4.1L/252
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN Code4
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1980
    Ending Year1981
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile diesel V8
    DrivetrainRWD
    Engine VIN CodeN
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1981
    Ending Year1981
    Engine TypeV8
    CID307
    Liter5.0
    Engine Size5.0L/307
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeY
  • MakeBUICK
    ModelLESABRE
    SubmodelCOLLECTOR'S EDITION
    Beginning Year1985
    Ending Year1985
    Engine TypeV6
    CC3800
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN CodeA
  • MakeBUICK
    ModelLESABRE
    SubmodelCOLLECTOR'S EDITION
    Beginning Year1985
    Ending Year1985
    Engine TypeV8
    CID307
    Liter5.0
    Engine Size5.0L/307
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeY
  • MakeBUICK
    ModelLESABRE
    SubmodelCOLLECTOR'S EDITION
    Beginning Year1985
    Ending Year1985
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile diesel V8
    DrivetrainRWD
    Engine VIN CodeN
  • MakeBUICK
    ModelLESABRE
    SubmodelCUSTOM
    Beginning Year1978
    Ending Year1978
    Engine TypeV8
    CID301
    Liter4.9
    Engine Size4.9L/301
    Engine FamilyPontiac V8
    DrivetrainRWD
    Engine VIN CodeY
  • MakeBUICK
    ModelLESABRE
    SubmodelCUSTOM
    Beginning Year1978
    Ending Year1978
    Engine TypeV8
    CID305
    Liter5.0
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    DrivetrainRWD
    Engine VIN CodeU
  • MakeBUICK
    ModelLESABRE
    SubmodelCUSTOM
    Beginning Year1978
    Ending Year1978
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyBuick V8
    DrivetrainRWD
    Engine VIN CodeX
  • MakeBUICK
    ModelLESABRE
    SubmodelCUSTOM
    Beginning Year1978
    Ending Year1978
    Engine TypeV8
    CID350
    Liter5.7
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeR
  • MakeBUICK
    ModelLESABRE
    SubmodelCUSTOM
    Beginning Year1978
    Ending Year1978
    Engine TypeV8
    CID403
    Liter6.6
    Engine Size6.6L/403
    Engine FamilyOldsmobile V8
    DrivetrainRWD
    Engine VIN CodeK
  • MakeBUICK
    ModelLESABRE
    SubmodelCUSTOM
    Beginning Year1978
    Ending Year1985
    Engine TypeV6
    CC3800
    CID231
    Liter3.8
    Engine Size3.8L/231
    Engine FamilyGM V6
    DrivetrainRWD
    Engine VIN CodeA

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