QA1 Rear Single Adjustable Coilover System - 99-06 2wd GM Truck

If you're ready to move beyond stock leaf springs, QA1’s rear suspension system is the upgrade your truck’s been waiting for. Built specifically for 1999–2006 NBS 2WD Silverado and Sierra 1500s, it’s a major step up in traction, ride quality, and overall drivability.

MORE TRACTION. NO BIND. BETTER STREET MANNERS

The torque arm setup replaces your leaf springs with a true multi-link system that eliminates bind, improves pinion angle control, and helps your truck put power down more effectively. This is the kind of upgrade that makes your truck feel planted and predictable.

DIAL IN YOUR RIDE WITH QA1 COIL-OVERS

Tailor the driving feel to your liking with QA1 single adjustable shocks. These shocks offer 18 clicks of combined compression and rebound adjustment to dial in a balance of performance and comfort. With up to 4"–7" of drop range, you can set the perfect stance while still enjoying a comfortable, confident ride.

BOLT-ON DESIGN WITH CROSSMEMBER REPLACEMENT

You won’t need a welder or fabrication shop to get this done. QA1 includes a bolt-in fuel tank crossmember that replaces the rust-prone factory piece while keeping your stock fuel tank and lines in place. The full system installs with basic hand tools and includes all the necessary hardware and instructions.

MADE IN THE USA

QA1 Torque Arm suspension is proudly made in Lakeville, Minnesota.

FEATURES & BENEFITS

• Torque arm design eliminates bind and improves rear grip
• Adjustable drop range from 4"–7" lower
• Single adjustable coil-overs with 18 clicks of adjustment
• Panhard bar helps maintain lateral alignment under load
• Includes bolt-in fuel tank crossmember—no welding needed
• Big upgrade in traction, ride comfort, and suspension control
• Works great with QA1’s rear sway bar (sold separately)
• Designed for easy installation with basic tools
• Spanner wrench and thrust bearing included
• Made in the USA

FITMENT NOTES 

• Fits 1999–2006 Chevrolet Silverado and GMC Sierra 1500 2WD – Short Bed Only
• For use with 10 bolt axle only
• Rear sway bar not included—available separately (Part Number: 52880)
• Modification to exhaust required