Dynamite Friction 633-31090R Disc Brake Rotor - Rear Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31090R) is engineered for BMW 135i and 135is models. This vented disc brake rotor features a directional, slotted, and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW 135i and 135is
• Part Number: 633-31090R
• Vented disc brake rotor with drilled and slotted surface
• Directional brake surface for optimized performance
• Rust resistant zinc black hat finish
• Nominal thickness: 21.8 mm; discard thickness: 20.4 mm
• Outside diameter: 324 mm; overall height: 77.5 mm
• 5 bolt holes with 14.7 mm diameter and 120 mm bolt circle diameter

Product Line Details: DFC Brake Rotor - Drilled and Slotted - Black

The DFC Brake Rotor - Drilled and Slotted - Black line by Dynamite Friction offers rotors designed with both drilled holes and slots to improve brake pad bite and aid in heat and gas dissipation. The zinc black hat finish provides corrosion resistance, extending rotor life. This product line focuses on delivering reliable braking performance for specific vehicle applications, including the BMW 135i and 135is.

Technical Specifications and Features

This disc brake rotor is vented to allow better airflow and heat management during braking. The rotor’s surface is both drilled and slotted, which helps reduce brake fade by allowing gases and debris to escape. The directional surface design ensures optimal contact with brake pads for consistent stopping power. The rotor measures 324 mm in outside diameter with a nominal thickness of 21.8 mm and a discard thickness of 20.4 mm, ensuring it meets OEM standards for durability and performance. The zinc black coating on the hat area provides rust resistance, maintaining structural integrity over time.

Applications and Problem Solving

• Replacement rotor for worn or warped rotors on BMW 135i and 135is
• Improves heat dissipation to reduce brake fade during aggressive driving
• Helps eliminate brake noise and vibration caused by uneven rotor surfaces
• Addresses corrosion issues with rust resistant coating
• Enhances braking response with directional drilled and slotted design

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 20.4 mm before installation. Clean the rotor surface to remove any protective coating before mounting. Verify bolt hole alignment with the 5-lug, 120 mm bolt circle pattern specific to BMW 135i and 135is. Proper torque specifications should be followed to avoid rotor warping. It is recommended to replace brake pads when installing new rotors for optimal performance.

Quality Assurance

Dynamite Friction manufactures this rotor to meet or exceed OEM specifications for fit, form, and function. The rust resistant zinc black finish helps extend rotor life by preventing corrosion. While no specific warranty information is provided, Dynamite Friction products are generally backed by quality control standards to ensure reliable braking performance on BMW 135i and 135is vehicles.