QA1 Rear Suspension Conversion Systems for 1999-2006 SIERRA 1500, SILVERADO 1500 - R145-200

Name: QA1 Rear Suspension Conversion Systems
Brand: QA1
SKU: QA1-R145-200
Price: 2925.95 USD
Availability: InStock
Rating: 0 (0 reviews)

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Part Number: QA1-R145-200

$2,925.95

QA1 Rear Suspension Conversion Systems

Rear Suspension System, Adjustable, Single Adjustable Coilover, 200 lbs./in., Torque Arm, Panhard Bar, GM 10-Bolt, Short Bed, Chevy, GMC, Kit
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QA1 Rear Suspension Conversion Systems for 1999-2006 SIERRA 1500, SILVERADO 1500 - R145-200

QA1-R145-200

Not Yet Reviewed

Part Number: QA1-R145-200

Estimated Ship Date: Oct 26, 2026

$2,925.95

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Overview

Applications

Kit/Combo Contents

Q&A

Instructions & Calculators

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

Kit/Combo Contents

QA1 RX45-1 - QA1 Suspension Kit Components

Sub Assembly, R145-200/R146-200/R245-200/R246-200, Fuel Tank Crossmember, Torque Arm Crossmember, Trailing Arms, Trailing Arm Mount, Kit

Kit Item Quantity: 1

QA1 RX45-2 - QA1 Suspension Kit Components

Sub Assembly, R145-200/R245-200, Trailing Arm Mounts, Torque Arm, Panhard Bar, Kit

Kit Item Quantity: 1

QA1 RX45-4 - QA1 Suspension Kit Components

Sub Assembly, R145-200/R146-200/R245-200/R246-200, Frame Notch, Templates, Kit

Kit Item Quantity: 1

QA1 RX45-5 - QA1 Suspension Kit Components

Sub Assembly, R145-200, R146-200 Shocks and Springs, Rear, Kit

Kit Item Quantity: 1

Overview

Brand:

QA1

Manufacturer's Part Number:

R145-200

Part Type:

Rear Suspension Packages

Product Line:

QA1 Rear Suspension Conversion Systems

Summit Racing Part Number:

QA1-R145-200

UPC:

806990233653

Third Member Included:

Axle Shafts Included:

Upper Control Arms Included:

Lower Control Arms Included:

Air Bags Included:

Rear Shocks/Struts Included:

Yes

Rear Shock Type:

Single adjustable coilover

Coilover Springs Included:

Yes

Coilover Spring Rate (lbs/in):

200 lbs./in.

Spring Finish:

Black

Suspension Package Finish:

Black powdercoated

Bushings Included:

Yes

Bushing Material:

Spherical bearing

Sway Bar Included:

Watts Link Included:

Panhard Bar Included:

Yes

Adjustable Panhard Bar Included:

Yes

Adjustable Panhard Bar Type:

On car adjustable

Upper Trailing Arms Included:

Adjustable Upper Trailing Arms Included:

Yes

Adjustable Upper Trailing Arms Type:

On car adjustable

Lower Trailing Arms Included:

Adjustable Lower Trailing Arms Included:

Yes

Adjustable Lower Trailing Arms Type:

On car adjustable

Trailing Arm Mount Braces Included:

Yes

Trailing Arm Hardware Included:

Yes

Rotors Included:

Calipers Included:

Quantity:

Sold as a kit.

Notes:

For use with 10-bolt axle and short bed models only. Modification to exhaust required.

QA1 Rear Suspension Conversion Systems

QA1 rear suspension conversion systems provide easy, bolt-in options to replace your coil springs on factory truck arms—without any cutting, welding, or other fabricating. Each kit contains frame brackets, axle brackets, linkage assemblies, a crossmember assembly, and necessary hardware. The conversions are available with coilovers or available for use with the factory springs. Order the model designed for fitment on your specific vehicle, and enjoy the stance, handling, and suspension performance of a revolutionary QA1 system.

Applications