Wilwood Superlite 4R Rear Big Brake Kit

Jeep Wrangler 07-15 3.8L/3.6L

Part #: 140-14066-DR

Overview

The Wilwood Narrow Superlite 4-Piston Rear Big Brake Kit is a precision-engineered upgrade designed specifically for the 2007–2018 Jeep Wrangler JK. This kit enhances rear braking performance by combining forged four-piston calipers with large 14-inch drilled rotors and high-performance brake pads. It delivers improved stopping power, better brake pedal feel, and increased fade resistance, making it ideal for both street driving and off-road adventures.

Designed to seamlessly integrate with the Jeep’s original parking brake, ABS, and master cylinder systems, this rear brake kit offers a reliable and direct bolt-on solution without compromising factory safety features. Jeep enthusiasts looking to upgrade their braking system for enhanced control, safety, and style will find this kit an excellent choice.

Key Features

Wilwood’s Narrow Superlite 4-Piston Rear Big Brake Kit incorporates advanced technology and quality materials to optimize braking performance and durability:

• Forged Narrow Superlite 4R calipers with four pistons delivering consistent and powerful clamping force
• High-performance BP-10 compound brake pads engineered for superior friction and fade resistance
• Drilled 14-inch rotors designed to improve heat dissipation and reduce brake fade under demanding conditions
• Maintains full functionality of the original equipment parking brake system for convenience and safety
• Compatible with OEM master cylinder output and ABS systems ensuring reliable brake system integration
• Red powder-coated calipers provide corrosion resistance and a bold visual upgrade
• Designed for use with 18-inch or larger wheels to accommodate the larger rotor diameter
• OEM axle offset of 0.00 and radial mount caliper design for precise fitment and improved brake feel

Construction & Design

The calipers are forged from high-strength aluminum alloy, offering an excellent strength-to-weight ratio that reduces unsprung weight and enhances vehicle handling. The Narrow Superlite design optimizes clearance for larger wheels and suspension components while maintaining rigidity and durability under heavy braking loads.

The 14-inch rotors are crafted from premium-grade iron and feature a drilled pattern that improves cooling efficiency and minimizes the risk of brake fade during intense driving. The red powder-coated finish on the calipers not only protects against corrosion but also adds a striking visual element that complements the rugged aesthetic of the Jeep Wrangler JK.

Installation & Fitment

This rear big brake kit is designed for direct bolt-on installation on 2007–2018 Jeep Wrangler JK models, requiring no modifications to the OEM parking brake or ABS components. The kit fits OEM axle offsets and uses radial mount calipers for secure and precise mounting. It is recommended for use with wheels 18 inches or larger to ensure proper clearance for the larger rotors. Professional installation is advised to guarantee optimal brake system performance and safety.

What's Included

• Forged Narrow Superlite 4R four-piston rear calipers with red powder coat finish
• Drilled 14-inch rotors
• BP-10 high-performance brake pads
• Mounting hardware and brackets compatible with OEM parking brake
• Installation instructions

Ideal For

• Jeep Wrangler JK owners seeking upgraded rear braking performance for street, trail, or show use
• Enthusiasts upgrading front brakes who want balanced stopping power front and rear
• Drivers requiring reliable brake system compatibility with ABS and parking brake functions
• Those looking to enhance the visual appeal of their Jeep with bold red calipers and drilled rotors

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.