Dynamic Friction 633-31017R Disc Brake Rotor - Front Right

BMW Front Right Drilled and Slotted Rotor

The Dynamic Friction DFC Brake Rotor - Drilled and Slotted - Black, part number 633-31017R, is a vented front right disc brake rotor built for select BMW 3 Series applications. It combines a slotted X drilled surface with a zinc black hat finish and rust resistant coating for a clean, service-ready replacement.

Compatible with 1984-1991 BMW 325e, 325es, 325i, 325is, 325iX, 318i, and 318is front right brake applications, this rotor is specified for vehicles with the listed caliper types and production dates. The 633-31017R rotor is sized at 260 mm outside diameter with a 22 mm nominal thickness and 20.4 mm discard thickness.

Key Features

• Slotted X drilled brake surface for consistent pad contact and heat management
• Vented rotor construction for front brake use
• Zinc black hat finish with rust resistant coating
• Directional brake surface for correct rotation-specific installation
• 4-lug pattern with 100 mm bolt circle diameter
• 260 mm outside diameter, 22 mm nominal thickness, 20.4 mm discard thickness

Product Details

The DFC Brake Rotor - Drilled and Slotted - Black line from Dynamic Friction focuses on application-specific brake rotor replacement with finish and surface details that matter during service. Part number 633-31017R uses a plain disc finish, black-coated hat, and a directional slotted-and-drilled braking surface to match the listed BMW fitments. This rotor is a direct match for front right positions on select BMW 318i, 318is, 325e, 325es, 325i, 325is, and 325iX models, including applications with ATE or Girling calipers where noted.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Brake pulsation from a worn or uneven rotor surface
• Reduced braking consistency from heat-affected rotor faces
• Corrosion on the rotor hat and exposed metal surfaces
• Fitment issues when replacing a front right BMW rotor with the correct bolt pattern and dimensions
• Service replacement needs on BMW 3 Series vehicles with the listed caliper configurations

Installation Notes and Tips

Verify the vehicle production date, caliper type, and front right position before installation. Confirm rotor dimensions, 4-bolt pattern, 100 mm bolt circle diameter, and 66 mm center hole diameter against the removed part. Because the braking surface is directional, install the rotor in the correct rotation orientation for the vehicle side.

For best results, inspect pads, caliper hardware, and hub condition during rotor replacement. Clean the hub mounting surface before installation to help reduce lateral runout and ensure proper seating.

Quality Assurance

Dynamic Friction supplies this rotor with a rust resistant coating and zinc black hat finish to support long-term appearance and service durability. The part is built to the listed dimensional specifications for the confirmed BMW applications, including 1984-1991 BMW 325e, 325es, 325i, 325is, 325iX, 318i, and 318is front right fitments.