MaxTrac 201940MR 4" Rear Lowering Kit GM 1500 Adaptive Ride

Build a 2"/4" Adaptive Ride Lowering System for Your GM 1500

Lower the rear of your 2019–2026 Chevrolet Silverado 1500 or GMC Sierra 1500 with the MaxTrac 201940MR 4" Rear Lowering Box Kit. Engineered specifically for trucks equipped with Adaptive Ride Control, this comprehensive rear package combines a flip kit, hangers, shackles, bump stops, shock extenders, and sensor provisions for a properly integrated 4-inch rear drop.
Pair the 201940MR rear box with MaxTrac 101920 front lowering spindles to create a complete 2"/4" lowering system. The USA-made steel components feature MaxTrac's durable grey powdercoat finish for long-lasting protection.

Key Features

4" Rear Drop

Provides approximately 4 inches of rear lowering on compatible Silverado and Sierra 1500 trucks for a noticeably lower, more aggressive stance.

Adaptive Ride Control Compatible

Designed specifically around trucks equipped with factory Adaptive Ride Control, including provisions for the suspension sensor system.

Complete Rear Lowering Package

Combines the flip kit, hangers, shackles, bump stops, shock extenders, and sensor provisions needed for the rear suspension conversion.

Pairs with MaxTrac 101920 Spindles

Combine the 201940MR with 101920 front lowering spindles to build MaxTrac's complete 2-inch front / 4-inch rear lowering configuration.

Made in the USA

Heavy-duty steel components are manufactured in the USA and finished in grey powdercoat for added corrosion protection.

What's Included

Rear flip kit
Hangers
Shackles
Bump stops
Shock extenders
Adaptive Ride sensor provisions
MaxTrac 201940MR rear lowering components

Vehicle Fitment

Fits

2019–2026 Chevrolet Silverado 1500 2WD/4WD
2019–2026 GMC Sierra 1500 2WD/4WD
Models equipped with Adaptive Ride Control

Does Not Fit

Models equipped with rear monoleaf springs

Important Notes

Designed specifically for models equipped with Adaptive Ride Control.
Does not fit trucks equipped with a rear monoleaf spring.
Trail Boss and AT4 models will receive more drop than the standard advertised height.
Designed to be paired with MaxTrac 101920 lowering spindles to create a complete 2"/4" lowering kit.
This rear box is not a complete front and rear lowering system by itself.
MaxTrac does not recommend wheels wider than 9" or wheels with less than 4.5" backspacing. Using wheels outside these specifications may void applicable manufacturer warranties.

Product Specifications

Brand: MaxTrac Suspension
Part Number: 201940MR
Associated Part Number: 101920 Front Spindles
UPC: 706199415358
Kit Type: Lower
Product Type: Rear Lowering Box Kit
Rear Drop: 4"
Complete System Drop: 2" Front / 4" Rear with 101920
Position: Rear
Drive Type: 2WD / 4WD
Suspension Type: Adaptive Ride Control
Material: Steel
Color: Grey
Finish: Grey Powdercoat
Sold As: Combo
Weight: 50 lbs
Dimensions: 20" × 20" × 8"
Multiple Box Item: No
Origin Criterion: A
Unit of Measure: IN
Country of Origin: USA

Why Choose MaxTrac 201940MR?

Adaptive Ride Control adds another layer of complexity to lowering a late-model GM 1500. Rather than piecing together unrelated rear components, the 201940MR packages the flip hardware, hangers, shackles, shock extenders, bump stops, and required sensor provisions into a coordinated rear lowering solution. Add the MaxTrac 101920 spindles to complete the intended 2"/4" suspension setup.

Perfect For

Silverado 1500 Adaptive Ride builds
Sierra 1500 lowered trucks
2"/4" suspension setups
Rear flip kit applications
Trail Boss lowering projects
AT4 lowered street builds