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QA1

QA1 Coil Over Shock System 99-06 Silverado/Sierra

MPN: gs51010700 Catalog #: 001866321 Category: Coil-over Shock Kits Check Vehicle Fitment

Product Details

Coil-Over Shock Kit - Pro-Coil - Twintube - Single Adjustable - Front - 700 lb/in Spring Rate - GM Fullsize Truck 1999-2006 - Pair

Upgrade the front suspension of your NBS truck with QA1’s coil-over kit. Designed for 2WD 1999–2006 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.

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.

Coil Over Shock System 99-06 Silverado/Sierra

Single Adjustable

Vehicle Fitment

Please verify year, make, model, and any notes before ordering.

Product Specs

Brand
QA1
Part Number
gs51010700
Catalog Number
001866321
Product Line
Coil-Over Shock Kits
Category
Suspension
Type
Coil-over Shock Kits
UPC / Barcode
806990233578
Vendor Product Category
Suspension
Vendor Product Subcategory
Coilovers
Length
21.20 in
Width
10.30 in
Height
8.90 in
Weight
31.00 lb
Units Per SKU
1
Freight / LTL
No
Ship Alone
No
Air Restricted
No
Prop 65
Y
CARB Approved
Yes
Clearance Item
No

Shipping & Availability

Current status 4 Available - Ready to ship
Estimated timing Usually ships within 24hrs

This item is showing available inventory. Most in-stock performance parts ship quickly, but timing can vary by warehouse, vendor cut-off time, holidays, and carrier pickup.

PROP 65 WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Inventory shown: 4 available as of 6/3/2026.

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