QA1 LK12-GMT06 4/5 Lowering Kit with Drop Spindles and Traction Bars, Double Adjustable

The QA1 LK12-GMT06 is a complete 4/5-inch front and rear lowering kit engineered for 2019–2026 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks in both 2WD and 4WD configurations. Built around QA1's double adjustable Pro-Coil front suspension and a matched double adjustable rear drop kit, this all-in-one solution delivers an aggressive lowered stance without sacrificing ride quality or drivability.

This kit stands apart by including both front drop spindles and a bolt-in rear traction bar system, giving you everything needed for a comprehensive suspension overhaul in a single package. The included drop spindles maintain proper suspension geometry while achieving the desired drop, and the traction bars integrate cleanly with the rear suspension to control axle wrap and wheel hop under acceleration.

Key Features:

• Front drop range: 2–4 inches; rear drop range: 3–5 inches for a true 4/5 stance
• Double adjustable shocks front and rear for independent compression and rebound tuning
• Pro-Coil front coil-over system with fully threaded shock bodies for precise ride height adjustment — no shims or spacers required
• Drop spindles included to maintain proper suspension geometry throughout the drop range
• Bolt-in rear traction bar system reduces wheel hop and axle wrap under hard acceleration
• Fully bolt-in design — no cutting or welding required
• Compatible with both 2WD and 4WD applications
• Traction bars work exclusively with QA1 rear drop kits
• Not compatible with MagnaRide suspension systems, air suspension, or trucks with mono leaf springs

QA1 truck suspension is proudly made in the USA in Lakeville, Minnesota, and is backed by a best-in-class lifetime warranty when registered at QA1.net. Whether you're building a clean street truck or a high-horsepower performance machine, the LK12-GMT06 delivers the adjustability and control to dial in your ideal setup.