Dynamite Friction 633-31070L Disc Brake Rotor - Rear Left

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

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31070L) is engineered for BMW models including the 325i, 330i, 330xi, 335d, 335i, 335is, 335i xDrive, 335xi, and X1. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Part Number: 633-31070L
• Compatible with BMW 325i, 330i, 330xi, 335d, 335i, 335is, 335i xDrive, 335xi, and X1
• Disc Finish: Plain with zinc black hat finish
• Surface Type: Directional slotted and drilled
• Vented rotor design for improved cooling
• Rust resistant coating applied
• Nominal Thickness: 22 mm; Discard Thickness: 20.4 mm
• Outside Diameter: 336 mm; Overall Height: 67.2 mm
• Bolt Hole Quantity: 5 with 14.8 mm diameter; Bolt Circle Diameter: 120 mm

Detailed Product Description

The DFC Brake Rotor - Drilled and Slotted - Black from Dynamite Friction is designed to meet the specific braking needs of various BMW models. Its vented construction allows for efficient heat dissipation during braking, reducing the risk of brake fade under demanding conditions. The rotor’s directional slotted and drilled surface improves water and debris evacuation, enhancing wet weather braking performance and maintaining consistent pad contact. The zinc black finish on the hat provides corrosion resistance, while the rust resistant coating on the rotor surface extends the rotor’s service life. With a nominal thickness of 22 mm and a discard thickness of 20.4 mm, this rotor maintains structural integrity and safety throughout its lifespan.

DFC Brake Rotor - Drilled and Slotted - Black Product Line

The DFC Brake Rotor - Drilled and Slotted - Black line by Dynamite Friction focuses on rotors that combine drilled holes and slots with a corrosion-resistant black zinc finish on the hat. This product line is engineered to provide enhanced braking performance through improved heat dissipation and debris removal, making it suitable for drivers seeking reliable stopping power and rotor longevity on BMW vehicles.

Common Applications and Problem Solving

• Reduces brake fade during high-performance or repeated braking
• Improves braking in wet or debris-prone conditions
• Prevents rust and corrosion on rotor surfaces
• Maintains consistent brake pad contact and performance
• Compatible replacement for worn or damaged rotors on specified BMW models

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (20.4 mm) before installation
• Use proper torque specifications for 5-bolt, 120 mm bolt circle diameter
• Clean rotor surface before installation to remove any protective coatings
• Check compatibility with vehicle’s brake caliper and hardware
• Inspect brake pads and replace if worn to ensure optimal rotor performance

Quality Assurance and Warranty

Dynamite Friction manufactures the 633-31070L rotor to meet OEM specifications for fitment and performance on BMW 325i, 330i, 330xi, 335d, 335i, 335is, 335i xDrive, 335xi, and X1 models. The rotor includes a rust resistant coating and zinc black hat finish to enhance durability. Warranty details should be confirmed with the manufacturer or distributor, as coverage may vary.