Front Pro Coil Shock System, 99-06 Silverado/Sierra 1500 2WD, Single Adjustable
QA1 #GS510-10700
 
Upgrade the front suspension of your NBS truck with QA1’s coil-over kit. Designed for 2WD 1999–2006 NBS Silverado and Sierra 1500s with QA1 tubular upper and lower control arms and includes QA1’s single 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.
RIDE QUALITY YOU CAN TUNE
This kit features QA1’s single adjustable coil-overs, allowing you to set your preferred ride height and fine-tune damping with 18 clicks of combined compression and rebound adjustment. 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.
MADE IN THE USA
QA1 NBS suspension is proudly made in Lakeville, Minnesota and built to last.
FEATURES & BENEFITS
QA1 single adjustable front coil-overs with 18 clicks of valving control
1"-3" drop 3"-5" with the drop spindle
Tubular upper and lower control arms improve suspension geometry
Pre-installed ball joints and bushings for easy installation
Ride height adjustability to dial in stance and feel
Bolt-on design—no welding required
Spanner wrench and thrust bearing included
Made in the USA
FITMENT NOTES 
Fits 1999–2006 Chevrolet Silverado / GMC Sierra 1500 2WD with coil front suspension
Works exclusively with QA1 lower control arms
Will not fit OEM or other manufacturer lower control arms
Not compatible with vehicles originally equipped with torsion bar front suspension
Specifications
Vehicle PositionFront
Shock ValvingSingle Adjustable
Springs IncludedYes
Spring Rate700lb/in.