Product Overview Upgrade the front suspension of your NBS truck with QA1’s complete coil-over and control arm kit. Designed for 2WD 1999–2006 Silverado and Sierra 1500s, this system includes tubular upper and lower control arms and QA1’s double adjustable coil-overs DIAL IN THE PERFECT STANCE QA1’s front coil-overs give you 1" to 3" of ride height adjustability right out of the box. Want to go lower? Pair them with QA1’s 2" drop spindles (Part Number: 9056-120) for a total drop range of 3" to 5" up front. Whether you're aiming for a subtle level or a slammed street look, this setup lets you get it just right. IMPROVED GEOMETRY WITH BOLT-ON CONTROL ARMS The included QA1 upper and lower tubular control arms are built to improve suspension geometry and increase strength over stock. They offer more clearance for coil-overs, reduce deflection under load, and help maintain proper alignment. RIDE QUALITY YOU CAN TUNEThis kit includes QA1’s double adjustable coil-overs, giving you 18 clicks of independent compression and rebound adjustment to fine-tune how your truck rides and handles. It’s easy to adjust on the vehicle and delivers a noticeable improvement in both comfort and control. STRAIGHTFORWARD, BOLT-ON INSTALL This system bolts directly into place using standard tools—no welding required. QA1 includes everything you need for a smooth install, with pre-installed ball joints and bushings in both control arms to save you time. MADE IN THE USA QA1 NBS suspension is proudly made in Lakeville, Minnesota and built to last with a durable powder coat finish. Fitment Notes: Fits 1999–2006 Chevrolet Silverado / GMC Sierra 1500 2WD with coil front suspension: Works exclusively with QA1 sway bar (Part Number: 52869) - does not fit with factory sway bar: Works with factory or QA1 drop spindles (Part Number: 9056-120): Not compatible with vehicles originally equipped with torsion bar front suspension
This Part Fits:
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2005 | Chevrolet | Silverado 1500 | Base |
| 2004-2006 | Chevrolet | Silverado 1500 | Hybrid |
| 1999-2006 | Chevrolet | Silverado 1500 | LS |
| 1999-2006 | Chevrolet | Silverado 1500 | LT |
| 2003-2006 | Chevrolet | Silverado 1500 | SS |
| 2002-2006 | Chevrolet | Silverado 1500 | WT |
| 2004-2005 | Chevrolet | Silverado 1500 | Z71 Off-Road |
| 2002-2005 | GMC | Sierra 1500 | Base |
| 2001 | GMC | Sierra 1500 | C3 |
| 2002-2006 | GMC | Sierra 1500 | Denali |
| 2002 | GMC | Sierra 1500 | HT |
| 2005-2006 | GMC | Sierra 1500 | Hybrid |
| 1999-2003,2006 | GMC | Sierra 1500 | SL |
| 1999-2006 | GMC | Sierra 1500 | SLE |
| 1999-2006 | GMC | Sierra 1500 | SLT |
| 2002-2006 | GMC | Sierra 1500 | WT |