Name: Ram 1500 2019-2026 HD Challenge Rear Brake System-Black / Drilled
SKU: HDTRX-380x32.01GX

Description

Upgraded Rear Braking for the 2019-2026 Ram 1500: Rotora HDTRX-380x32 HD Challenge Rear Brake System

The HDTRX-380x32 HD Challenge Rear Brake System delivers purpose-built rear axle performance for the 2019-2026 Ram 1500 (DT platform). Pairing a 380x32mm two-piece floating rotor with an RG408 4-piston monoblock caliper, this kit provides the thermal capacity and clamping force to support demanding towing, hauling, and performance driving. The HDTRX-380x32 includes the EPBB (Electronic Parking Brake Bypass) module required for full compatibility with the DT platform's integrated electronic parking brake system.

Key Features

380x32mm two-piece floating disc rotor with aluminum hat
RG408 forged 4-piston monoblock caliper
Includes EPBB (Electronic Parking Brake Bypass) module for DT platform compatibility
Black powder-coated hat on all color variants
10 caliper color options: Zinc, Red, White, Yellow, Orange, Green, Light Blue, Blue, Silver, Black
Slotted or Cross-Drilled disc pattern available
Stainless steel brake lines included
Direct-fit, no cutting or welding required

Fitment

Year Range	Make	Model
2019-2026	Ram	1500

Specifications

Detail	Value
MPN	HDTRX-380x32
Brand	Rotora
Axle Position	Rear
Rotor Size	380x32mm
Rotor Type	2-Piece Floating
Caliper Model	RG408
Piston Count	4-Piston Monoblock
Hat Color	Black
EPBB Module	Included
Brake Lines	Stainless Steel Included
Condition	New
UPC	See product label

What's Included

2x 380x32mm two-piece floating rotors (rear pair)
2x RG408 4-piston monoblock calipers
EPBB (Electronic Parking Brake Bypass) module
Caliper mounting brackets
Stainless steel brake lines
Hardware and installation hardware kit
Rotora instruction sheet

About Rotora

Rotora engineers performance brake systems for street and track use. The HDTRX-380x32 is part of the HD Challenge series specifically developed for the Ram 1500 DT platform, accounting for the electronic parking brake architecture and providing every component needed for a complete rear axle upgrade.

Frequently Asked Questions

What is the HDTRX-380x32?

The HDTRX-380x32 is a complete rear big-brake kit for the 2019-2026 Ram 1500 featuring a 380x32mm two-piece floating rotor, RG408 4-piston monoblock caliper, and EPBB module from Rotora's HD Challenge series.

Why is the EPBB module included with the HDTRX-380x32?

The 2019-2026 Ram 1500 DT platform integrates an electronic parking brake into the rear caliper. The EPBB (Electronic Parking Brake Bypass) module allows the aftermarket caliper to interface with the factory electronic control system without triggering fault codes or disabling the parking brake function.

Does the HDTRX-380x32 include stainless steel brake lines?

Yes. Stainless steel braided brake lines are included with the HDTRX-380x32 rear kit.

What caliper colors are available on the HDTRX-380x32?

Ten colors are available: Zinc (standard, no upcharge), Red, White, Yellow, Orange, Green, Light Blue, Blue, Silver, and Black. Non-Zinc colors carry a per-axle upcharge.

Is the HDTRX-380x32 compatible with the 2024 and 2025 and 2026 Ram 1500?

Yes. The HDTRX-380x32 is fitment-verified for the Ram 1500 DT platform spanning model years 2019 through 2026.

What wheel clearance does the HDTRX-380x32 require?

A minimum 20-inch wheel is recommended. Verify clearance with your specific wheel and tire combination before ordering.

Can the HDTRX-380x32 be paired with the HDTRX-365x36 front kit?

Yes. The HDTRX-380x32 rear kit is designed as the rear axle complement to the HDTRX-365x36 front kit, providing a balanced complete axle-to-axle HD Challenge brake upgrade for the 2019-2026 Ram 1500.

Is the HDTRX-380x32 appropriate for towing use?

Yes. The 380x32mm rotor and 4-piston caliper of the HDTRX-380x32 substantially improve rear braking capacity and thermal management compared to factory brakes, making it ideal for trucks used for towing and heavy-load hauling.

Installation Instructions

Safely lift the vehicle and remove the rear wheels.
Remove the factory rear caliper, bracket, and rotor.
Install the EPBB module per the included instructions, connecting to the factory electronic parking brake harness.
Install the HDTRX-380x32 caliper mounting bracket using supplied hardware.
Mount the 380x32mm two-piece rotor onto the rear hub.
Install the RG408 4-piston caliper and torque to specification.
Connect the included stainless steel brake lines.
Bleed the rear brake circuit thoroughly.
Reinstall wheels and perform the recommended bedding procedure before hard braking.

WARNING: This product can expose you to chemicals including Chromium (hexavalent compounds), which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

Request For Information

Have questions about ? Fill out the form below and we'll get back to you by the next business day.

Full Name

Email Address

Phone Number

Request Type

Message

Big Brake Kits

Welcome to our exclusive Big Brake Kits collection, where performance meets safety and style. Upgrading your vehicle's braking system is essential for enhancing stopping power and overall driving experience, especially for high-performance and modified cars. Our collection features a variety of premium big brake kits designed to cater to different makes and models, ensuring that you find the perfect fit for your vehicle. Why Choose Our Big Brake Kits? Our Big Brake Kits are engineered for superior performance, offering: Enhanced Stopping Power: Larger rotors and calipers provide improved braking performance. Durability: Made with high-quality materials to withstand the rigors of intense driving. Custom Fit: Available for various vehicle models, ensuring compatibility and ease of installation. Stylish Design: Upgrade your car’s aesthetics with eye-catching components. Features of Our Big Brake Kits Our carefully curated selection includes: Cross-drilled and slotted roto...

View Big Brake Kits Products

Brake Kits

Shop brake kits, big brake kits, performance brake kits, OE brake kits, drilled and slotted brake kits, brake pad and rotor kits, truck and tow brake kits, street brake kits, sport brake kits, caliper brake kits, front brake kits, rear brake kits, and complete axle brake upgrades at Black Ops Auto Works. Brake kits bundle matched rotors and pads into one package for better fitment, consistent braking performance, easier ordering, and complete front or rear axle service. Whether you need a stock replacement brake kit for a daily driver, a performance brake kit for spirited street driving, a big brake kit for high-horsepower builds, or a truck and tow brake kit for heavier vehicles, this collection helps you shop brake kits by brand, vehicle, rotor style, pad compound, axle position, and driving use. Shop Brake Kits by Category Browse brake kit upgrades across popular braking categories, including: OE replacement brake kits Big brake kits Front brake kits Rear brake kits Brake pad an...

View Brake Kits Products

Brakes

Performance Brakes, Brake Pads, Rotors & Big Brake Kits Shop premium performance brake parts, brake pads, brake rotors, big brake kits, brake calipers, brake line kits, stainless steel brake lines, brake hardware, brake master cylinders, brake drums, brake shoes, hand brakes, and brake adapters at Black Ops Auto Works. This collection is built for drivers who need dependable stopping power, improved pedal feel, fade resistance, and braking confidence for street performance, towing, daily driving, racing, off-road use, and custom builds. Whether you are upgrading a muscle car, truck, SUV, Jeep, Dodge, Ford, BMW, Audi, Nissan, Honda, Subaru, Lexus, Hyundai, Mazda, Infiniti, Toyota, or track-focused vehicle, our Brakes collection includes high-quality brake system components designed for fitment, durability, and performance. Brake Parts from Top Brands Shop trusted brake brands available in our catalog, including: DBA brake rotors EBC Brakes pads and rotors Hawk Performance brake ...

View Brakes Products

Rotora Brakes High-Performance Braking Systems and Components

Shop Dodge Durango SRT Hellcat parts and accessories at Black Ops Auto Works for performance, exhaust, intake, suspension, cooling, braking, drivetrain, carbon fiber, engine bay, and styling upgrades. The Dodge Durango SRT Hellcat uses a 6.2L supercharged HEMI V8, making it one of the most powerful three-row performance SUVs ever built. This collection includes vehicle-specific upgrades for Durango Hellcat owners who want more airflow, better sound, improved cooling, stronger braking, better handling, and more aggressive styling. Whether you are building a daily-driven Durango Hellcat, a street performance SUV, a track-capable build, a towing-ready family hauler, or a high-horsepower Mopar project, Black Ops Auto Works carries trusted aftermarket parts from brands such as Legmaker, CORSA Performance, Borla, AWE Tuning, aFe Power, JLT Performance, CSF Cooling, Cordes Performance, Billet Technology, Rotora, DBA, EBC Racing, PowerStop, Per4mance Development, Granatelli, ModalWorks, Ren...

View Rotora Brakes High-Performance Braking Systems and Components Products

BBS RC/RSII/Super RS Center Wrench

Access Accessories EZ-Retriever II Cargo Reaching Tool

QA1 Ratchet Spanner Wrench & Thrust Bearing Kit - 2 Pack