QA1 Rear MOD Coilover Conversion Systems RCK52440

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Part Number: QA1-RCK52440

$2,273.95

Coilover Kit, MOD Coilover System, Rear, Double Adjustable, 130 lbs./in. Spring Rate, Buick, Chevy, GMC, Oldsmobile, Pontiac, Kit
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QA1 Rear MOD Coilover Conversion Systems RCK52440

QA1 Rear MOD Coilover Conversion Systems RCK52440

QA1-RCK52440

Not Yet Reviewed

Part Number: QA1-RCK52440

Estimated Ship Date: Oct 26, 2026

$2,273.95

Estimated Ship Date: Oct 26, 2026 Would you rather pick it up?

Overview

Brand:
QA1
Manufacturer's Part Number:
RCK52440
Part Type:
Product Line:
Summit Racing Part Number:
QA1-RCK52440
UPC:
806990155023
Coilover Kit Position:
Rear
Adjustable Valving:
Yes
Number of Valving Selections:
324
Shocks Included:
Yes
Internal Design:
Twin-tube
Coilover Springs Included:
Yes
Spring Rate (lbs./in.):
130 lbs./in.
Suspension Height Adjustment:
0.0-1.5 in. lowered
Gas Charged:
Yes
Extended Length (in.):
20.50
Collapsed Length (in.):
14.00
Upper Mount:
Eyelet
Lower Mount:
Eyelet
Body Diameter (in.):
2.000
Shock Body Material:
Aluminum
Shock Body Finish:
Black/Red
Bushing Material:
Spherical bearing
Bushing Color:
Black
Spring Finish:
Gray/Silver
Crossmember Included:
No
Adjustable Mounting Bracket Included:
Yes
Hardware Included:
Yes
Welding Required:
No
Quantity:
Sold as a kit.
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.

QA1 Rear MOD Coilover Conversion Systems

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

Applications

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Instruction Sheets for Part Number QA1-RCK52440

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