Brembo GT Series Slotted 1-Pc Rotor Front Big Brake Kit

Fitment: 2015-2018 Subaru WRX/STi

Part #: 1E5.6003A4

Overview

The Brembo GT Series Slotted 1-Piece Rotor Front Big Brake Kit is a high-performance braking upgrade designed for enthusiasts seeking superior stopping power and enhanced pedal feel. Crafted for the front axle of 2015-2018 Subaru WRX and STI models, this kit features large-diameter rotors and robust calipers to deliver consistent, fade-resistant braking performance. Whether you're on the street or track, this system helps improve modulation, responsiveness, and overall control, making it an ideal choice for drivers who demand the best from their vehicle’s braking system. This kit is perfect for those looking to upgrade from stock brakes to a more capable, durable, and visually striking solution. The slotted rotors help dissipate heat and gases generated during braking, reducing brake fade and maintaining performance under demanding conditions. Designed with precision engineering, it supports confident driving and spirited stops, ensuring your vehicle responds reliably when it matters most.

Key Features

This Brembo GT Series kit combines advanced materials and thoughtful design to optimize braking performance:

• High-quality 1-piece cast iron rotors with slotted surface for improved heat dissipation and gas venting
• Large 326mm (12.83") diameter and 30mm (1.18") thickness for increased thermal capacity and durability
• 4-piston calipers engineered for balanced clamping force and even pad wear
• Precision-machined surfaces for optimal fitment and consistent braking response
• Designed to enhance pedal feel and modulation for confident braking control
• Stylish gold finish adds a premium look to your vehicle’s front end

Construction & Design

The rotors are constructed from high-grade cast iron with a slotted design that helps reduce heat buildup and brake fade during aggressive driving. The one-piece design ensures structural integrity and reliable performance over time, while the slotted surface promotes effective gas and debris removal, maintaining consistent contact with the brake pads.

Driving Feel & Feedback

This brake kit is designed to provide a more responsive and confident braking experience. The large rotors and calipers work together to improve pedal feel, offering better modulation and control during both everyday driving and high-performance stops. The slotted surface also contributes to a more predictable and linear brake response, enhancing driver confidence.

Installation & Fitment

Installation requires standard mechanical skills and appropriate tools. The kit is designed as a direct bolt-on upgrade for the specified Subaru WRX/STi models, ensuring a straightforward installation process. Proper torque specifications and safety precautions should be followed during installation.

What’s Included

The package includes the pair of slotted rotors and the necessary calipers, mounting hardware, and instructions for installation. Additional brake pads are not included and should be selected based on your driving needs.