Wilwood AERO4 Rear Big Brake Kit

Fits Most Chrysler/Dodge 6.4L/5.7L/3.6L (12-15)

Part #: 140-14068-DR

Overview

The Wilwood AERO4 Rear Big Brake Kit is a high-performance upgrade designed specifically for rear-wheel-drive Chrysler 300, Dodge Challenger, and Dodge Charger models from 2012 through 2023 equipped with 3.6L V6 or 5.7L Hemi engines. This kit replaces the factory rear disc brakes with larger, more capable components that enhance stopping power, durability, and overall braking performance. Featuring red powder-coated 4-piston calipers and drilled 14.25" rotors, this kit is engineered to complement front big brake upgrades and maintain compatibility with the original equipment parking brake system and ABS functionality.

Ideal for enthusiasts who demand improved brake response and fade resistance for street, track, or performance driving, the Wilwood AERO4 Rear Big Brake Kit delivers a balanced braking solution that matches the vehicle’s master cylinder output and brake bias requirements.

Key Features

This rear big brake kit combines advanced engineering and quality materials to provide superior braking performance and style:

• High-performance Wilwood W4AR 4-piston calipers with red powder coat finish for corrosion resistance and visual appeal
• Oversized 14.25" drilled rotors designed for enhanced heat dissipation and reduced brake fade
• BP-10 compound brake pads optimized for strong initial bite and consistent stopping power
• Direct bolt-on replacement for factory rear disc brakes, retaining original parking brake assembly
• Compatible with factory ABS systems and master cylinder output for safe, reliable braking
• Engineered to fit vehicles with OEM axle offset of 0.00 and radial mount calipers
• Minimum wheel diameter requirement of 18" to ensure proper clearance
• Designed to complement front big brake upgrades for a balanced braking setup

Construction & Design

The Wilwood AERO4 Rear Big Brake Kit features calipers constructed from lightweight yet durable forged aluminum, providing excellent strength-to-weight ratio and resistance to corrosion. The calipers utilize a radial mount design for improved stiffness and pedal feel. The rotors are crafted from premium-grade cast iron with precision-drilled holes to enhance cooling and reduce the risk of brake fade during aggressive driving. The drilled rotor design also helps evacuate water and debris, maintaining consistent braking performance in various conditions.

Each component is engineered to meet stringent quality standards, ensuring long-lasting performance and reliability under demanding driving scenarios.

Installation & Fitment

This kit is designed as a direct replacement for the factory rear disc brakes on 2012–2023 Chrysler 300, Dodge Challenger, and Dodge Charger models equipped with 3.6L V6 or 5.7L Hemi engines and rear-wheel drive. It retains the original parking brake assembly, allowing for seamless integration without the need for custom modifications. Installation requires standard mechanical skills and tools, and the kit is compatible with the vehicle’s existing ABS system and brake bias setup.

Note that a minimum wheel diameter of 18 inches is required to accommodate the larger rotor and caliper assembly.

What's Included

• Set of Wilwood W4AR 4-piston red powder-coated rear calipers
• Pair of 14.25" drilled rotors
• BP-10 compound brake pads pre-installed in calipers
• Mounting hardware and brackets for direct bolt-on installation
• Instructions for installation and setup

Ideal For

This rear big brake kit is perfect for performance enthusiasts and drivers who have upgraded their front brakes or wheels and require enhanced rear braking capability. It suits street performance, occasional track use, and any application where improved brake modulation, fade resistance, and style are desired. It is especially beneficial for owners of Dodge Challenger, Charger, and Chrysler 300 models seeking a balanced, high-quality brake upgrade without sacrificing parking brake functionality.

Wilwood Engineering is a major manufacturer of high-performance disc brake solutions spanning racing, street performance, and specialty OE applications. From big brake kits and calipers to rotors and hydraulic components, Wilwood upgrades are built for stronger stopping power, better heat management, and consistent pedal feel when stock brakes aren’t enough.