QA1 GS517-10650C Front Pro Coil Single Adj Coilover Kit 1999-2006 Silverado 2WD

Vehicle Fitment

• 1999-2006 Chevrolet Silverado 1500 (2WD) - All Cab Configurations
• 1999-2006 GMC Sierra 1500 (2WD) - All Cab Configurations

Fitment Notes

• 2WD applications only - for 4WD Silverado/Sierra 1500 applications, see the GD518 series (2007-2018)
• Bolt-in compatible with both factory OE stamped steel control arms and QA1 tubular control arms - no control arm replacement required
• Upper mount: Stud type / Lower mount: T-bar type
• Provides 0 to -2 inches of front ride height adjustability; for additional drop beyond 2 inches, consider adding compatible drop spindles
• 650 lbs/in is the heavier spring rate option in the GS517 lineup - suited for heavier builds or bigger engine applications; for lighter builds see the 750 lbs/in option or the lower rate kits; contact QA1 tech support for spring rate guidance based on your truck's front axle weight
• Spring style: 10-inch tapered Style C (large diameter flat upper / 10HTBF650) - specific to this truck coilover application
• Register shocks at QA1 before installation to activate Limited Lifetime Warranty

Features

• Single adjustable GS517 Pro Coil shock - 18 valving positions of simultaneous compression and rebound adjustment for easy on-car tuning
• Provides 0 to -2 inches of front ride height adjustability via threaded shock body spring seat nut
• Includes a 10-inch tapered Style C high travel chrome silicon spring at 650 lbs/in - engineered for the front axle weight demands of the 1999-2006 Silverado/Sierra 1500 2WD platform
• Fewer coils and smaller wire diameter vs. conventional springs for increased travel and reduced unsprung weight
• Bolt-in with both factory OE and QA1 tubular control arms for maximum build flexibility
• Stud upper / T-bar lower mount configuration for direct OE-style front suspension integration
• Suitable for street performance, drag racing, autocross, road racing, and daily driving applications
• 100% dyno-tested and serialized for verified, consistent performance
• Serviceable and rebuildable by QA1 Authorized Service Centers
• Made in the USA at QA1's Lakeville, Minnesota facility

Specifications

• Part Number: GS517-10650C
• Type: Front Pro Coil Single Adjustable Coilover System
• Application: 1999-2006 Chevrolet Silverado 1500 / GMC Sierra 1500 (2WD)
• Shock Model: GS517 Single Adjustable Pro Coil
• Valving: 18 positions (simultaneous compression and rebound)
• Spring Length: 10 inches (tapered, Style C - large diameter flat upper)
• Spring Rate: 650 lbs/in
• Spring Material: Chrome Silicon High Travel
• Ride Height Adjustability: 0 to -2 inches
• Upper Mount: Stud Type
• Lower Mount: T-Bar Type
• Warranty: Limited Lifetime (register before installation)
• Quantity: Pair (2 shocks + 2 springs)
• Made in the USA

Included Components

• 2x QA1 GS517 Single Adjustable Pro Coil Front Shocks (100% Dyno-Tested and Serialized)
• 2x 10-Inch Tapered Style C High Travel Chrome Silicon Springs - 650 lbs/in (10HTBF650)
• 1x Complete Hardware Kit (all required mounting hardware)

Product Description

The QA1 GS517-10650C is a single adjustable front Pro Coil coilover system engineered as a bolt-in front suspension upgrade for 1999-2006 Chevrolet Silverado 1500 and GMC Sierra 1500 2WD trucks. This kit replaces the factory front coil spring and shock with an adjustable coilover assembly that provides up to 2 inches of ride height drop and 18 simultaneous compression and rebound valving positions for straightforward front suspension tuning. The 10-inch tapered Style C chrome silicon high travel spring at 650 lbs/in targets heavier 2WD builds and is the stiffer rate in the GS517 standard lineup.

The GS517 single adjustable shock offers an 18-position valve dial that adjusts compression and rebound simultaneously - easy to access with the steering wheel turned to full lock. This kit installs with both factory OE stamped steel control arms and QA1 tubular control arms with no mandatory control arm replacement needed. Each shock is 100% dyno-tested, serialized, and serviceable by QA1 Authorized Service Centers. Register at QA1 before installation to activate the Limited Lifetime Warranty.