Part #: 140-13969-D
The Wilwood Narrow Superlite 4-Piston Rear Big Brake Kit is a high-performance upgrade designed specifically for the 2007–2018 Jeep Wrangler JK. This kit enhances rear braking capability by combining forged Narrow Superlite 4R four-piston calipers with drilled 12.88-inch rotors, delivering superior stopping power and improved heat dissipation. Ideal for Jeep enthusiasts seeking enhanced braking performance for street, off-road, or show applications, this kit maintains full compatibility with the original equipment parking brake, master cylinder output, and ABS systems.
Engineered to complement front brake upgrades ranging from 13 inches and larger, this rear kit ensures balanced braking performance while supporting upgraded wheels, tires, and suspension components. The black powder-coated calipers offer a sleek, durable finish that adds both style and corrosion resistance.
This rear big brake kit combines advanced engineering and quality materials to deliver reliable, high-performance braking. Key features include:
The calipers are forged from high-strength aluminum alloy, providing an excellent strength-to-weight ratio that reduces unsprung mass while maintaining durability under demanding conditions. The Narrow Superlite design optimizes caliper size for improved wheel clearance without sacrificing braking power. The rotors are precision-machined from premium-grade iron and feature a drilled pattern to improve cooling and reduce the risk of brake fade during extended use.
Each component is finished with a black powder coat that resists corrosion and wear, ensuring long-lasting performance and a clean, aggressive look that complements the rugged style of the Jeep Wrangler JK.
This kit is engineered for direct bolt-on installation to the 2007–2018 Jeep Wrangler JK rear axle with no modifications required to the parking brake or ABS systems. The radial mount caliper design aligns precisely with the OEM mounting points, simplifying installation and ensuring reliable operation. A minimum 17-inch wheel diameter is required to accommodate the larger rotor and caliper assembly.
Installation should be performed by a qualified technician to ensure proper brake system function and safety. Brake fluid bleeding and system checks are recommended after installation to maintain optimal performance.
This rear big brake kit is ideal for Jeep Wrangler JK owners who demand improved rear braking performance for enhanced safety and control. It suits enthusiasts upgrading their braking system for spirited street driving, off-road adventures, or show vehicles requiring both style and function. The kit pairs perfectly with front big brake upgrades and suspension enhancements to create a balanced, high-performance braking system tailored to the Jeep Wrangler JK platform.
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.
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Wilwood 140-13969-D Jeep Wrangler 07-15 3.8L/3.6L Wilwood Narrow Superlite 4-Piston Rear Big Brake Kit (Black Calipers, Drilled 12.88" Rotors). Wilwood's Narrow Superlite 4-Piston Rear Big Brake Kit features black powder-coated calipers and drilled 12.88" rotors designed for enhanced stopping power and heat dissipation. This kit retains full use of the OE parking brake, master cylinder, and ABS, ensuring safety and compatibility. Ideal for high-performance street and show vehicles, it complements larger front brake upgrades and supports wheel and suspension enhancements. Requires 17" minimum wheel diameter for installation.
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Part #: 140-13969-D
The Wilwood Narrow Superlite 4-Piston Rear Big Brake Kit is a high-performance upgrade designed specifically for the 2007–2018 Jeep Wrangler JK. This kit enhances rear braking capability by combining forged Narrow Superlite 4R four-piston calipers with drilled 12.88-inch rotors, delivering superior stopping power and improved heat dissipation. Ideal for Jeep enthusiasts seeking enhanced braking performance for street, off-road, or show applications, this kit maintains full compatibility with the original equipment parking brake, master cylinder output, and ABS systems.
Engineered to complement front brake upgrades ranging from 13 inches and larger, this rear kit ensures balanced braking performance while supporting upgraded wheels, tires, and suspension components. The black powder-coated calipers offer a sleek, durable finish that adds both style and corrosion resistance.
This rear big brake kit combines advanced engineering and quality materials to deliver reliable, high-performance braking. Key features include:
The calipers are forged from high-strength aluminum alloy, providing an excellent strength-to-weight ratio that reduces unsprung mass while maintaining durability under demanding conditions. The Narrow Superlite design optimizes caliper size for improved wheel clearance without sacrificing braking power. The rotors are precision-machined from premium-grade iron and feature a drilled pattern to improve cooling and reduce the risk of brake fade during extended use.
Each component is finished with a black powder coat that resists corrosion and wear, ensuring long-lasting performance and a clean, aggressive look that complements the rugged style of the Jeep Wrangler JK.
This kit is engineered for direct bolt-on installation to the 2007–2018 Jeep Wrangler JK rear axle with no modifications required to the parking brake or ABS systems. The radial mount caliper design aligns precisely with the OEM mounting points, simplifying installation and ensuring reliable operation. A minimum 17-inch wheel diameter is required to accommodate the larger rotor and caliper assembly.
Installation should be performed by a qualified technician to ensure proper brake system function and safety. Brake fluid bleeding and system checks are recommended after installation to maintain optimal performance.
This rear big brake kit is ideal for Jeep Wrangler JK owners who demand improved rear braking performance for enhanced safety and control. It suits enthusiasts upgrading their braking system for spirited street driving, off-road adventures, or show vehicles requiring both style and function. The kit pairs perfectly with front big brake upgrades and suspension enhancements to create a balanced, high-performance braking system tailored to the Jeep Wrangler JK platform.
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.
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Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.
Free Standard Shipping on orders over $300. Select “Free Shipping” at checkout. *Exclusions apply on oversized and freight items.
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.
