R1 Concepts Drilled & Slotted Brake Rotor

Jeep Grand Cherokee 99-04 4.0L I6

Part #: 631-42025R

Overview

The R1 Concepts Drilled & Slotted Brake Rotor is engineered specifically for the rear right position of Jeep Grand Cherokee models from 1999 to 2004. Designed to fit a wide range of engine options including 2.5L, 4.0L inline-6, and 4.7L, 5.2L, and 5.9L V8 engines, this rotor delivers reliable stopping power and enhanced braking performance. Ideal for Jeep enthusiasts seeking improved heat dissipation and consistent brake feel, this rotor upgrades your vehicle’s braking system with precision and durability.

Whether you’re tackling daily driving or light off-road adventures, the R1 Concepts rotor offers superior resistance to brake fade and maintains optimal performance under demanding conditions. Its drilled and slotted design helps evacuate gases, dust, and water, ensuring a cleaner rotor surface and better pad contact for safer, more confident braking.

Key Features

R1 Concepts’ drilled and slotted brake rotor combines advanced design with quality materials to enhance your Jeep Grand Cherokee’s braking system. Key features include:

• Precision CNC-machined drilled holes for improved heat dissipation and gas release
• Strategically placed slots to remove brake dust and water, maintaining pad contact
• Durable silver zinc plating to resist corrosion and extend rotor life
• High-quality cast iron construction for strength and consistent performance
• Rear right rotor designed for exact fitment on 1999–2004 Jeep Grand Cherokee models
• Compatible with multiple engine variants including 2.5L, 4.0L I6, and V8 engines
• Optimized to reduce brake fade during heavy braking or extended use
• Direct replacement for OEM rotors with no modifications required

Construction & Design

This brake rotor is crafted from premium-grade cast iron, chosen for its excellent thermal conductivity and durability. The rotor undergoes a precision machining process to ensure flatness and balance, reducing vibrations and brake judder. The drilled holes and slots are engineered to maximize airflow and cooling efficiency, which helps maintain consistent braking performance even under high-stress conditions.

The silver zinc plating provides a protective barrier against rust and corrosion, a common issue in brake components exposed to moisture and road salt. This coating not only preserves the rotor’s appearance but also extends its service life, making it a reliable choice for Jeep owners in various climates.

Installation & Fitment

The R1 Concepts drilled and slotted rotor is designed as a direct bolt-on replacement for the rear right side of Jeep Grand Cherokee models from 1999 to 2004. Installation requires no special modifications or machining, making it suitable for professional mechanics and experienced DIYers alike. It is recommended to replace rotors in pairs to ensure balanced braking performance and to inspect brake pads and hardware during installation for optimal results.

What's Included

• One (1) R1 Concepts Drilled & Slotted Rear Right Brake Rotor (Silver Finish)

Ideal For

This rotor is ideal for Jeep Grand Cherokee owners looking to upgrade their braking system for improved heat management and stopping power. It suits daily drivers, weekend adventurers, and light off-road enthusiasts who demand reliable and consistent brake performance. Additionally, it appeals to those seeking a cost-effective, high-quality replacement rotor that maintains OEM fitment and durability.

R1 Concepts is a manufacturer and retailer specializing in automotive braking systems, offering a comprehensive catalog of brake parts for both foreign and domestic vehicles from 1930 to the present. Their product line includes OE replacements and high-performance aftermarket brake components, such as cross-drilled and slotted rotors, ceramic brake pads, and big brake kits. Enthusiasts choose R1 Concepts for their precision engineering and quality materials, which enhance braking performance and safety across various driving conditions.