Dynamite Friction 631-42028L Disc Brake Rotor - Rear Left

Overview of the DFC Brake Rotor - Drilled and Slotted - Silver

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-42028L) is engineered for reliable braking performance on Jeep Liberty, TJ, and Wrangler models. This solid disc brake rotor features a directional, slotted and drilled surface designed to enhance heat dissipation and maintain consistent stopping power.

• Compatible with Jeep Liberty, TJ, and Wrangler
• Part Number: 631-42028L
• Solid disc rotor with drilled and slotted surface
• Nominal thickness: 12 mm; discard thickness: 11 mm
• Outside diameter: 285 mm; overall height: 57.9 mm
• Directional brake surface for optimized performance
• Zinc silver hat finish with rust-resistant coating
• 5 bolt holes with 16.6 mm diameter and 114.3 mm bolt circle diameter

Details on the DFC Brake Rotor - Drilled and Slotted - Silver Line

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction offers a balance of durability and performance for disc brake applications. This rotor line features a plain disc finish combined with a zinc silver hat finish that provides corrosion resistance. The drilled and slotted surface pattern is directional, designed to improve brake pad bite and reduce heat buildup, which is critical for maintaining braking efficiency under demanding conditions.

Technical Specifications and Features

This rotor is a solid type with a nominal thickness of 12 mm and a discard thickness of 11 mm, ensuring a clear service limit for safe operation. The rotor’s outside diameter measures 285 mm, with an overall height of 57.9 mm. It includes five bolt holes, each with a diameter of 16.6 mm, arranged on a 114.3 mm bolt circle diameter, matching the factory specifications for Jeep Liberty, TJ, and Wrangler models. The center hole diameter is 72 mm, allowing for proper hub fitment. The zinc silver hat finish and rust-resistant coating help protect against corrosion, extending the rotor’s service life.

Applications and Problem Solving

• Replacement rotor for worn or warped brake rotors on Jeep Liberty, TJ, and Wrangler
• Improves heat dissipation to reduce brake fade during heavy braking
• Slotted and drilled design helps remove brake dust and gases for consistent pad contact
• Directional surface enhances braking performance and pad bite
• Corrosion-resistant coating prevents rust buildup in harsh environments

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 11 mm before installation. Clean the rotor surface to remove any protective coating or contaminants prior to mounting. Verify bolt hole alignment with the vehicle’s hub using the 5-bolt, 114.3 mm bolt circle pattern. Proper torque specifications should be followed to avoid rotor warping. This rotor is designed for direct replacement on compatible Jeep models without modification.

Quality Assurance

Dynamite Friction manufactures the DFC Brake Rotor - Drilled and Slotted - Silver to meet or exceed OEM standards for fit, form, and function. The rust-resistant coating and zinc silver hat finish contribute to long-term durability. While no specific warranty information is provided, the rotor’s design and materials support reliable braking performance for Jeep Liberty, TJ, and Wrangler vehicles when installed and maintained properly.