Dynamite Friction 633-31151L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (Part Number 633-31151L) is engineered for BMW X3 and X4 models. This vented disc brake rotor features a directional, slotted, and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW X3 and X4 models
• Directional, slotted and drilled rotor surface for improved braking
• Vented rotor design for enhanced heat dissipation
• Nominal thickness of 28 mm with discard thickness at 26.4 mm
• Zinc black hat finish with rust-resistant coating
• 5 bolt holes with 16.65 mm diameter and 120 mm bolt circle diameter
• Overall diameter of 328 mm and height of 73.5 mm

Detailed Product Features and Specifications

This Dynamite Friction rotor is part of the DFC Brake Rotor - Drilled and Slotted - Black product line, which focuses on rotors that combine drilled and slotted surfaces to improve water and gas evacuation during braking. The rotor’s vented design helps maintain optimal operating temperatures by allowing air to flow between the rotor surfaces, reducing the risk of brake fade. The directional surface pattern is engineered to optimize braking efficiency and pad contact.

The rotor’s nominal thickness is 28 mm, with a discard thickness of 26.4 mm, ensuring a long service life before replacement is necessary. The zinc black hat finish provides corrosion resistance, complemented by an overall rust-resistant coating to protect the rotor from environmental damage. The rotor features five bolt holes with a diameter of 16.65 mm and a bolt circle diameter of 120 mm, matching the BMW X3 and X4 specifications precisely.

Applications and Problem Solving

• Replacement rotor for worn or warped brake rotors on BMW X3 and X4
• Improves braking performance under wet or high-heat conditions
• Reduces brake fade during aggressive driving or towing
• Helps prevent rust and corrosion on braking surfaces
• Restores proper rotor thickness and braking efficiency

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify the bolt hole pattern and diameter match your vehicle’s hub assembly. It is recommended to replace brake pads simultaneously to maintain optimal braking performance. Follow manufacturer torque specifications for lug nuts and bolts to avoid rotor warping.

Quality Assurance

Dynamite Friction rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The rust-resistant coating and zinc black hat finish provide extended durability. While no specific warranty information is provided, the product is designed for reliable performance on BMW X3 and X4 vehicles when installed correctly.