SKU: 11600211
Ridetech Performance Lowering System (Group B Axle) – 2019-2025 Chevrolet Silverado / GMC Sierra 1500 4WD
The Ridetech Performance Lowering System for 2019-2025 GM 1500 4WD trucks with Group B rear axle delivers a aggressive lowered stance, improved handling, and better ride quality through a complete bolt-on kit featuring HQ Series adjustable front coilovers, rear flip kit with bolt-in C-notch, and tuned rear shocks. Specifically engineered for Trail Boss, AT4, Z71, and other models with stamped steel/aluminum rear control arms (Group B), this system provides configurable 4″/6″ or 5″/7″ drops while maintaining near-stock payload and alignment geometry.
Key Features
- HQ Series Adjustable Front Coilovers: Single-adjustable rebound damping with threaded preload for ride height and corner balancing.
- Rear Flip Kit & Bolt-In C-Notch: Flips axle above leaf springs for maximum drop; reinforced C-notch bolts directly to frame.
- HQ Series Rear Shocks: Vehicle-specific valving for controlled motion and smooth ride.
- Drop Options: 4″ front / 6″ rear or 5″ front / 7″ rear (configurable with components).
- Improved Geometry: Maintains proper suspension travel and alignment specs.
- Bolt-On Design: No welding or frame cutting required on most installations.
- Aluminum Construction: Lightweight shock bodies and impact-forged components.
- Made in USA: Designed, manufactured, and assembled at Ridetech headquarters.
Product Notes
- Designed exclusively for Group B axle trucks (stamped steel or aluminum rear lower control arms – common on Trail Boss, AT4, Z71/RST with off-road packages).
- Compatible with 20″-22″ wheels (verify tire backspacing and offset).
- Retains factory payload when not overloaded, optional air assist available for heavy hauling.
- Does NOT fit Group A (cast iron arms) or MagneRide-equipped models without additional parts.
- Optional traction bars and rear sway bar recommended for hard launches.
Installation Notes
- 100% bolt-on – C-notch bolts in, no welding.
- Professional alignment mandatory after install.
- Rear shock relocators and sway bar links included.
- Typical install time 8-12 hours with basic tools and lift.
This Part Fits
| Year | Make | Model | Drivetrain | Axle Type |
|---|---|---|---|---|
| 2019-2025 | Chevrolet | Silverado 1500 | 4WD | Group B (Trail Boss, Z71, RST w/ stamped arms) |
| 2019-2025 | GMC | Sierra 1500 | 4WD | Group B (AT4, Elevation, etc.) |
Why Choose Ridetech?
- 25+ years developing GM truck suspension with proven street and track performance.
- HQ Series shocks feature monotube design and 1,000,001 mile warranty.
- Lifetime warranty on manufactured components to original purchaser.
Frequently Asked Questions
- Q: How do I confirm Group B axle?
- A: Group B has stamped steel or aluminum rear lower control arms (not cast iron). Most Trail Boss/AT4/Z71 models are Group B.
- Q: Will this work with MagneRide?
- A: No, MagneRide trucks require different front coilovers.
- Q: Does it affect towing/payload?
- A: Maintains stock ratings when not exceeded air assist kit available for heavy loads.
Shipping & Handling
- Method: Freight truck (multiple boxes).
- Package Weight: Approximately 160–180 lbs total.
- Box Dimensions (approx): Largest box ~60″ × 20″ × 12″.
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