Dynamite Friction 4004-31001 Disc Brake Rotor Set - Front and Rear

Dynamite Friction DFC Geospec Rotors for BMW

The Dynamite Friction DFC Geospec Rotors part number 4004-31001 is a disc brake rotor set for select BMW applications with front and rear coverage. Built for direct-fit brake service, this rotor set supports routine rotor replacement on classic BMW 3 Series models from the 1980s and early 1990s.

Key Features

• Disc brake rotor set for front and rear positions
• DFC Geospec Rotors product line from Dynamite Friction
• Part number 4004-31001 for accurate ordering and fitment lookup
• Application-specific fitment for select BMW 318i, 318is, 325i, 325is, 325iX, 325e, and 325es models
• Notes include Girling calipers, ATE calipers, and vehicle production date limits where required

Fitment Details

• Fits 1991 BMW 318i, front and rear; vehicle production date to 4/91; DFC Geospec Rotors
• Fits 1991 BMW 318is, front and rear; vehicle production date to 4/91; DFC Geospec Rotors
• Fits 1987-1991 BMW 325i, front and rear; Girling calipers; DFC Geospec Rotors
• Fits 1987-1991 BMW 325is, front and rear; Girling calipers; DFC Geospec Rotors
• Fits 1991 BMW 325iX, front and rear; Girling calipers; DFC Geospec Rotors
• Fits 1984-1987 BMW 325e, front and rear; Girling calipers; DFC Geospec Rotors
• Fits 1986-1987 BMW 325es, front and rear; with ATE calipers; DFC Geospec Rotors

What This Rotor Set Helps Address

• Brake pulsation caused by worn or uneven rotor surfaces
• Reduced braking consistency from rotor wear
• Noise associated with rotor condition issues
• Service replacement needs on BMW front and rear brake systems
• Fitment mismatches when ordering rotors for caliper-specific applications

Installation Notes and Tips

Confirm the vehicle production date before ordering, especially for 1991 BMW 318i and 318is applications that are limited to production through 4/91. Verify caliper type on 325i, 325is, 325iX, 325e, and 325es models, since fitment varies between Girling and ATE configurations. Compare the part number 4004-31001 against the existing brake setup before installation.

Quality Assurance

DFC Geospec Rotors are part of Dynamite Friction’s brake component lineup for application-specific service on BMW vehicles. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.