Wilwood AERO4 Rear Big Brake Kit

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

Part #: 140-14068-D

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 braking power, durability, and style. Featuring black powder-coated 4-piston calipers and drilled 14.25-inch rotors, the AERO4 kit is engineered to work seamlessly with the original equipment parking brake assembly and ABS system, ensuring reliable and balanced braking performance.

Ideal for enthusiasts who demand improved stopping power to complement front big brake upgrades, this kit supports vehicles with upgraded wheels, tires, and suspension setups. It is engineered to match the original master cylinder output and brake bias, delivering consistent pedal feel and enhanced safety under demanding driving conditions.

Key Features

The Wilwood AERO4 Rear Big Brake Kit combines advanced engineering and quality materials to provide superior braking performance and durability. Key features include:

• Black powder-coated 4-piston calipers for increased clamping force and corrosion resistance
• Drilled 14.25-inch rotors for improved heat dissipation and reduced brake fade
• BP-10 high-performance brake pads optimized for street and light track use
• Designed to integrate with the original equipment parking brake system
• Compatible with factory ABS and brake bias for balanced braking response
• Oversized rotor diameter enhances thermal capacity and stopping power
• Requires minimum 18-inch wheel diameter for proper fitment
• Direct bolt-on installation with no modifications needed to OEM axle offset or mounting points

Construction & Design

The AERO4 kit features calipers constructed from lightweight yet durable aluminum alloy, finished in a sleek black powder coat that resists corrosion and complements modern vehicle aesthetics. The rotors are precision-machined from premium-grade cast iron and feature a drilled pattern to promote rapid heat dissipation and reduce brake fade during aggressive driving. The kit’s design maintains OEM axle offset and mounting specifications, ensuring a perfect fit and preserving factory suspension geometry.

Wilwood’s engineering focus on matching the kit to the original master cylinder output and ABS system guarantees that the upgraded brakes deliver consistent pedal feel and reliable stopping power without compromising vehicle safety systems.

Installation & Fitment

This rear big brake kit is 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 excludes all-wheel-drive variants and high-performance 6.4L 392 or 6.2L Hellcat models. Installation requires no modifications to the axle or suspension components and retains the original parking brake assembly for seamless integration.

Due to the larger rotor size, a minimum 18-inch wheel diameter is required to accommodate the kit. Professional installation is recommended to ensure proper brake system bleeding and calibration with ABS components.

What's Included

• Set of two black powder-coated 4-piston AERO4 rear calipers
• Two drilled 14.25-inch rotors
• BP-10 high-performance brake pads pre-installed
• Hardware and brackets for OE parking brake integration
• Installation instructions

Ideal For

This Wilwood AERO4 Rear Big Brake Kit is perfect for performance enthusiasts and daily drivers seeking enhanced rear braking capability on their Chrysler 300, Dodge Challenger, or Dodge Charger. It is especially suited for vehicles with upgraded front big brake kits, larger wheels and tires, or those used in spirited driving scenarios where improved heat management and stopping power are critical.

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.