Product Overview The QA1 lowering kit is an all-in-one solution for anyone looking to upgrade the suspension of their 07-18 Silverado 1500 / Sierra 1500’s. This kit includes both QA1’s front Pro Coil Coil-Overs, drop spindles, and Rear Drop Kit, which provide maximum adjustability to achieve the perfect lowered stance, while providing significant improvements to ride quality and performance. Ride Height Adjustability QA1 lowering kits offer easy and precise adjustments for your truck’s stance. Fully threaded front coil-over shock bodies provide adjustment without the use of clumsy shims or spacers, while our rear drop kits offer 2″ of adjustment to dial in the final rake of the truck. Front coil-overs provide a drop range of 3″-5″ with the included drop spindles. Rear kit provides a drop range of 4-6″. With our Heavy Duty Shock Design QA1 Engineers have tackled the challenge of supporting the weight and payload capacity of modern trucks by designing the heavy-duty version of our Pro Coil system, which features an upgraded shock with polyurethane bushings and a 1″ chromoly T-bar specifically designed to withstand the daily use of these trucks. Double-Adjustable Shocks Upgrade your Silverado’s performance to the next level with QA1 double adjustable Pro Coil shocks. Perfect for both street and track use, double adjustable shocks are famous for their independent rebound and compression tunability, giving you exceptional handling and control over your suspension. Rear Shackles and Hanger KitsQA1’s Rear Shackle and Hanger Kits are the ultimate solution for lowering the rear of your truck without compromising ride quality. Made from heavy-gauge steel with a powder-coated finish and top-notch hardware, our kits guarantee long-lasting performance in any driving conditions.Easy, Bolt-In InstallationOur commitment to thoughtful product design is evident in every fully bolt-in kit we produce, which guarantees a hassle-free installation process.
QA1 LK12-GMT04 4/6 Lowering Kit, 07-16 Silverado 1500/Sierra 1500, 4WD, Double Adjust, with Drop Spindles for Cast Steel Control Arms
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.
- Easy, bolt-in installation
- Ride height adjustability
- Adjustable shock valving
- Heavy duty shock design
- Lifetime shock warranty
- Improved ride quality
- Made in the USA
Fits
2007 Chevrolet Silverado 1500 LS
2007 Chevrolet Silverado 1500 LT
2007 Chevrolet Silverado 1500 LTZ
2007 Chevrolet Silverado 1500 WT
2007 GMC Sierra 1500 Denali
2007 GMC Sierra 1500 SL
2007 GMC Sierra 1500 SLE
2007 GMC Sierra 1500 SLT
2007 GMC Sierra 1500 WT
2008 Chevrolet Silverado 1500 LS
2008 Chevrolet Silverado 1500 LT
2008 Chevrolet Silverado 1500 LTZ
2008 Chevrolet Silverado 1500 WT
2008 GMC Sierra 1500 Denali
2008 GMC Sierra 1500 SL
2008 GMC Sierra 1500 SLE
2008 GMC Sierra 1500 SLT
2008 GMC Sierra 1500 WT
2009 Chevrolet Silverado 1500 Hybrid
2009 Chevrolet Silverado 1500 LS
2009 Chevrolet Silverado 1500 LT
2009 Chevrolet Silverado 1500 LTZ
2009 Chevrolet Silverado 1500 WT
2009 GMC Sierra 1500 Denali
2009 GMC Sierra 1500 Hybrid
2009 GMC Sierra 1500 SL
2009 GMC Sierra 1500 SLE
2009 GMC Sierra 1500 SLT
2009 GMC Sierra 1500 WT
2010 Chevrolet Silverado 1500 Hybrid
2010 Chevrolet Silverado 1500 LS
2010 Chevrolet Silverado 1500 LT
2010 Chevrolet Silverado 1500 LTZ
2010 Chevrolet Silverado 1500 WT
2010 Chevrolet Silverado 1500 XFE
2010 GMC Sierra 1500 Denali
2010 GMC Sierra 1500 Hybrid
2010 GMC Sierra 1500 SL
2010 GMC Sierra 1500 SLE
2010 GMC Sierra 1500 SLT
2010 GMC Sierra 1500 WT
2010 GMC Sierra 1500 XFE
2011 Chevrolet Silverado 1500 Hybrid
2011 Chevrolet Silverado 1500 LS
2011 Chevrolet Silverado 1500 LT
2011 Chevrolet Silverado 1500 LTZ
2011 Chevrolet Silverado 1500 WT
2011 Chevrolet Silverado 1500 XFE
2011 GMC Sierra 1500 Denali
2011 GMC Sierra 1500 Hybrid
2011 GMC Sierra 1500 SL
2011 GMC Sierra 1500 SLE
2011 GMC Sierra 1500 SLT
2011 GMC Sierra 1500 WT
2011 GMC Sierra 1500 XFE
2012 Chevrolet Silverado 1500 Hybrid
2012 Chevrolet Silverado 1500 LS
2012 Chevrolet Silverado 1500 LT
2012 Chevrolet Silverado 1500 LTZ
2012 Chevrolet Silverado 1500 WT
2012 Chevrolet Silverado 1500 XFE
2012 GMC Sierra 1500 Denali
2012 GMC Sierra 1500 Hybrid
2012 GMC Sierra 1500 SL
2012 GMC Sierra 1500 SLE
2012 GMC Sierra 1500 SLT
2012 GMC Sierra 1500 WT
2012 GMC Sierra 1500 XFE
2013 Chevrolet Silverado 1500 Hybrid
2013 Chevrolet Silverado 1500 LS
2013 Chevrolet Silverado 1500 LT
2013 Chevrolet Silverado 1500 LTZ
2013 Chevrolet Silverado 1500 WT
2013 Chevrolet Silverado 1500 XFE
2013 GMC Sierra 1500 Denali
2013 GMC Sierra 1500 Hybrid
2013 GMC Sierra 1500 SL
2013 GMC Sierra 1500 SLE
2013 GMC Sierra 1500 SLT
2013 GMC Sierra 1500 WT
2013 GMC Sierra 1500 XFE
2014 Chevrolet Silverado 1500 High Country
2014 Chevrolet Silverado 1500 LT
2014 Chevrolet Silverado 1500 LTZ
2014 Chevrolet Silverado 1500 WT
2014 GMC Sierra 1500 Base
2014 GMC Sierra 1500 Denali
2014 GMC Sierra 1500 SLE
2014 GMC Sierra 1500 SLT
2015 Chevrolet Silverado 1500 High Country
2015 Chevrolet Silverado 1500 LS
2015 Chevrolet Silverado 1500 LT
2015 Chevrolet Silverado 1500 LTZ
2015 Chevrolet Silverado 1500 SSV
2015 Chevrolet Silverado 1500 WT
2015 GMC Sierra 1500 Base
2015 GMC Sierra 1500 Denali
2015 GMC Sierra 1500 SLE
2015 GMC Sierra 1500 SLT
2016 Chevrolet Silverado 1500 Custom
2016 Chevrolet Silverado 1500 High Country
2016 Chevrolet Silverado 1500 LS
2016 Chevrolet Silverado 1500 LT
2016 Chevrolet Silverado 1500 LTZ
2016 Chevrolet Silverado 1500 SSV
2016 Chevrolet Silverado 1500 WT
2016 GMC Sierra 1500 Base
2016 GMC Sierra 1500 Denali
2016 GMC Sierra 1500 SLE
2016 GMC Sierra 1500 SLT



















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