Product Description:
QA1 4-6” Lowering Kit – 4WD Silverado / Sierra 1500
Complete front and rear suspension system designed to deliver an aggressive lowered stance while improving ride quality and overall driving comfort on 4WD trucks.
✔ 1–3” Front Drop (No Spindles)
✔ Single Adjustable Shocks
✔ Designed for 4WD Trucks
✔ Bolt-In Installation
⚠️ This kit does NOT include drop spindles. Front drop is limited compared to spindle-equipped kits.
? Want a lower front stance and better ride quality? Upgrade to a spindle-equipped kit (LK11 / LK12 / LK21 / LK22).
Performance & Ride Quality
QA1 Pro Coil coilovers improve ride quality and allow rebound adjustment to fine-tune comfort and handling for everyday driving.
Ride Height Range
Front: 1–3” drop
Rear: 4–6” drop with ½” incremental adjustment
Heavy-Duty Design
Built specifically for truck applications with upgraded shocks, polyurethane bushings, and durable components designed for daily use.
Rear Drop System
Includes heavy-duty rear drop components designed to maintain ride quality while achieving a lowered stance.
Installation
Fully bolt-in system designed for straightforward installation with no major modifications required.
Warranty
Backed by QA1’s lifetime warranty (registration required).
Fitment Notes
- Requires use of QA1 spanner wrench T114W or T115W
- Compatible with OEM or aftermarket drop spindles
- 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.
- Front drop is limited due to 4WD suspension geometry
Specifications
| Kit Type | Lowering Kit |
| Drivetrain | 4WD |
| Shock Valving | Single Adjustable |
| Includes Drop Spindles | No |
| Emission Code | 4 |
| Prop 65 Warning | Yes |
