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Technical Bulletin
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Ridetech 19-25 GM Silverado/Sierra 1500 4WD Lowering Kit - Group B Axle Type

Ridetech
RID11720116
840123518866
Lowering Kits
11 Units In Stock - Ships Next Business Day
$ 3,315.00
$ 3,315.00

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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