The QA1 lowering kit is a complete front and rear suspension package for 2007-2016 Chevrolet Silverado 1500 and GMC Sierra 1500 4WD trucks. It combines front Pro Coil coil-overs, drop spindles, and a rear drop kit to deliver an adjustable lowered stance with improved ride quality and handling. Fully threaded front coil-over bodies set ride height without shims or spacers, the rear drop kit adds 2in of adjustment for final rake, and the double adjustable Pro Coil shocks allow independent rebound and compression tuning for street or track use. The heavy-duty shock design uses polyurethane bushings and a 1in chromoly T-bar to handle the weight and payload of modern trucks.
Specifications:
- Complete front and rear lowering system
- Drivetrain: 4WD
- Front drop range 3in to 5in with included drop spindles
- Rear drop range 4in to 6in with 2in of adjustment
- Double adjustable Pro Coil shocks with independent rebound and compression
- Heavy-duty shock with polyurethane bushings and 1in chromoly T-bar
- Rear shackle and hanger kit in heavy-gauge steel with powder-coated finish
- Bolt-in installation
- Lifetime shock warranty
- Made in the USA
- Part number: LK12-GMT04
Vehicle Applications:
- 2007 Chevrolet Silverado 1500 4WD
- 2008 Chevrolet Silverado 1500 4WD
- 2009 Chevrolet Silverado 1500 4WD
- 2010 Chevrolet Silverado 1500 4WD
- 2011 Chevrolet Silverado 1500 4WD
- 2012 Chevrolet Silverado 1500 4WD
- 2013 Chevrolet Silverado 1500 4WD
- 2014 Chevrolet Silverado 1500 4WD
- 2015 Chevrolet Silverado 1500 4WD
- 2016 Chevrolet Silverado 1500 4WD
- 2007 GMC Sierra 1500 4WD
- 2008 GMC Sierra 1500 4WD
- 2009 GMC Sierra 1500 4WD
- 2010 GMC Sierra 1500 4WD
- 2011 GMC Sierra 1500 4WD
- 2012 GMC Sierra 1500 4WD
- 2013 GMC Sierra 1500 4WD
- 2014 GMC Sierra 1500 4WD
- 2015 GMC Sierra 1500 4WD
- 2016 GMC Sierra 1500 4WD
FAQ
How much does this kit lower the truck?
The front coil-overs with the included drop spindles provide a 3in to 5in drop, and the rear drop kit provides a 4in to 6in drop with 2in of adjustment to set final rake.
Are the shocks adjustable?
Yes. The kit uses QA1 double adjustable Pro Coil shocks with independent rebound and compression tuning for street or track use.
Does this kit require cutting or welding?
No. The kit is a bolt-in installation.
What vehicles does this kit fit?
It fits 2007-2016 Chevrolet Silverado 1500 and GMC Sierra 1500 4WD models.

