Dynamite Friction 604-31090 Disc Brake Rotor - Rear

Overview of Dynamite Friction DFC GEOSPEC Coated Rotor

The Dynamite Friction DFC GEOSPEC Coated Rotor 604-31090 is engineered for BMW 135i and 135is models, providing reliable braking performance. This vented disc brake rotor is designed to meet precise specifications for optimal fit and function.

• Compatible with BMW 135i and 135is models
• Part number 604-31090 for accurate identification
• Vented rotor design for improved heat dissipation
• Nominal thickness of 21.8 mm and discard thickness of 20.4 mm
• Five bolt holes with 14.7 mm diameter each
• Outside diameter measures 324 mm, inside diameter 75 mm
• Rotor height of 77.5 mm

Detailed Product Specifications

This Dynamite Friction disc brake rotor features a vented design that enhances cooling during braking, reducing the risk of brake fade. The rotor’s nominal thickness is 21.8 mm, with a discard thickness of 20.4 mm, ensuring it meets safety standards for wear limits. The rotor has five bolt holes, each with a diameter of 14.7 mm, and an outside diameter of 324 mm, which aligns with the OEM specifications for BMW 135i and 135is vehicles. The inside diameter is 75 mm, and the rotor height is 77.5 mm, providing a precise fit for the intended models.

About the DFC GEOSPEC Coated Rotor Line

The DFC GEOSPEC Coated Rotor line by Dynamite Friction is designed to offer enhanced corrosion resistance and durability through a specialized coating process. This coating helps protect the rotor surface from rust and environmental damage, extending the service life of the rotor. The 604-31090 rotor benefits from this coating, making it suitable for drivers seeking consistent braking performance in various conditions.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 135i and 135is
• Addresses brake noise caused by uneven rotor surfaces
• Improves heat dissipation to reduce brake fade during aggressive driving
• Restores proper rotor thickness for safe braking performance
• Prevents corrosion-related rotor damage with coated surface

Installation Notes and Tips

When installing the Dynamite Friction 604-31090 rotor, ensure the rotor surface is clean and free of debris. Verify the bolt hole alignment matches the vehicle’s hub assembly. It is recommended to replace brake pads simultaneously to maintain optimal braking efficiency. Torque bolts to manufacturer specifications and check rotor thickness regularly to monitor wear.

Quality Assurance and Warranty

Dynamite Friction manufactures the 604-31090 rotor to meet industry standards for safety and performance. The DFC GEOSPEC Coated Rotor line undergoes rigorous quality control to ensure durability and fitment accuracy. Warranty details should be confirmed with the product documentation or supplier, as coverage may vary.