QA1 4-6” Lowering Kit – Double Adjustable w/ Spindles | 07-16 Silverado/Sierra 1500 2WD

QA1 4-6” Lowering Kit – Double Adjustable Coilover System | 2007–2016 Silverado / Sierra 1500 2WD

Complete front and rear suspension system designed to deliver an aggressive lowered stance with maximum adjustability, improved handling, and superior ride quality for 2WD trucks with cast steel control arms.

✔ Want a more budget-friendly option? Check out the Single Adjustable version (LK11).

✔ Double adjustable shocks allow independent tuning of compression and rebound for maximum performance on street or track.

Performance & Ride Quality

QA1 Pro Coil system dramatically improves ride quality and handling, giving you precise control over suspension behavior for daily driving or aggressive performance setups.

Ride Height Range

Front: 3–5” drop (adjustable coilovers)
Rear: 4–6” drop with ½” incremental adjustment

Heavy-Duty Design

Engineered for truck applications with upgraded shocks, polyurethane bushings, and a 1” chromoly T-bar to handle vehicle weight and daily use.

Rear Drop System

Includes heavy-duty shackles and hangers constructed from powder-coated steel for long-lasting durability and consistent performance.

Installation

Fully bolt-in system designed for straightforward installation with no cutting or fabrication required.

Warranty

Backed by QA1’s lifetime warranty (registration required).

Fitment Notes

Only compatible with trucks that have factory Cast Steel control arms.

• Direct fit for 2007-2013 trucks
• Only compatible with 2014 to 2016 trucks using Cast Steel control arms.  Will NOT work on 2014 to 2016 trucks with aluminum or stamped steel control arms.
• Must be used with 17" minimum diameter wheels
• Axle U-bolts not included
• Does not fit 1500HD model trucks or 2007 Silverado/Sierra 1500 Classic
• Offset upper control arm bushings (AcDelco PN 45K0201) may be required on vehicles lowered more the 2.5” to align within the factory specifications.

Specifications