GMC Sierra 1500 Sway Bar - Rear - QA1 - 1-1/4in - `99-`06 is a bolt-on rear anti-roll bar designed for 2WD Sierra/Silverado 1500 trucks from 1999–2006. This QA1 1.25" unit tightens rear-end response and reduces body roll for improved cornering balance, particularly on lowered trucks or those using QA1 torque arm systems.

Built in Lakeville, Minnesota, the QA1 rear sway bar provides a durable, precision-formed upgrade that complements QA1 front bars, coilover conversions, and torque arm rear suspensions. The larger 1-1/4" diameter increases torsional stiffness to keep the truck more composed through turns, while the powder coat finish helps resist corrosion. The kit is supplied complete with bushings, brackets, and installation hardware for a straightforward bolt-on installation using common hand tools—no cutting or welding required.

Features

• 1.25" diameter steel sway bar tuned for rear stability
• Includes bushings, brackets, and hardware for bolt-on fitting
• Compatible with QA1 coilover conversions, leaf springs, and torque arm systems
• Powder coat finish for durability; made in the USA
• Fits 1999–2006 2WD Chevrolet/GMC Sierra/Silverado 1500 models

If you have questions about fitment, pairing this bar with a front sway bar, or how it will affect handling on your specific setup, call us — our tech staff can walk you through details. We have two installation and customization locations in Austin, Texas and the Los Angeles, California area and can install this part on premises. Call: 512-982-9393 (TX) or 562-981-6800 (CA).

If you are considering purchasing multiple items, contact us for potential shipping discounts. We install on premises at both locations.

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