Dynamite Friction 633-91002L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-91002L) is engineered for reliable braking performance on Scion xA and xB models. This vented disc brake rotor features a directional, slotted, and drilled surface designed to enhance heat dissipation and maintain consistent stopping power.

• Compatible with Scion xA and xB vehicles
• Directional slotted and drilled surface for improved brake cooling
• Vented rotor design to reduce heat buildup
• Nominal thickness of 22 mm with a discard thickness of 20 mm
• Rust-resistant zinc black hat finish and plain disc finish
• Four bolt holes with a 100 mm bolt circle diameter
• Overall diameter of 255 mm and height of 43.3 mm

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

The DFC Brake Rotor - Drilled and Slotted - Black line from Dynamite Friction offers rotors with enhanced surface features including drilled holes and slots. These design elements help to evacuate gases, dust, and water from the braking surface, improving brake pad contact and reducing fade. The black zinc coating on the rotor hat provides corrosion resistance, extending the rotor's service life, especially in environments prone to rust.

Technical Specifications and Features

This disc brake rotor is vented to allow air circulation between the rotor surfaces, which helps dissipate heat generated during braking. The rotor's nominal thickness is 22 mm, with a discard thickness of 20 mm, indicating when replacement is necessary to maintain safe braking performance. The rotor features a directional surface type with both slots and drilled holes, designed to optimize braking efficiency and reduce brake fade under demanding conditions.

The rotor's hat is finished with a zinc black coating to resist rust, while the disc surface has a plain finish. It includes four bolt holes with a bolt circle diameter of 100 mm and a center hole diameter of 55 mm, ensuring proper fitment on compatible Scion models. The overall diameter measures 255 mm, and the height is 43.3 mm, matching OEM specifications for the Scion xA and xB.

Applications and Problem Solving

• Improves braking performance on Scion xA and xB vehicles
• Reduces brake fade during extended or aggressive braking
• Helps prevent rust and corrosion on rotor hats
• Enhances heat dissipation to maintain consistent stopping power
• Addresses brake noise and vibration issues related to worn rotors

Installation Notes and Tips

Ensure the rotor is installed on compatible Scion xA or xB models using the correct torque specifications for the four bolt holes. Verify that the rotor thickness is above the discard thickness of 20 mm before installation. The directional slotted and drilled surface should be oriented according to the vehicle manufacturer's recommendations to maximize performance. It is advisable to inspect brake pads and other braking components during rotor replacement for optimal results.

Quality Assurance

Dynamite Friction manufactures the 633-91002L rotor to meet or exceed OEM standards for fit, form, and function. The rust-resistant coating and vented design contribute to durability and consistent braking performance. Warranty information is available through the manufacturer and should be consulted for specific coverage details.