Dynamite Friction 631-31017L Disc Brake Rotor - Front Left

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

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31017L) is engineered for reliable braking performance on select BMW models. Designed with vented construction and a directional surface, this rotor supports efficient heat dissipation and consistent stopping power.

• Compatible with BMW 318i, 318is, 325e, 325es, 325i, 325is, and 325iX models
• Vented disc brake rotor with drilled and slotted surface for improved cooling
• Directional brake surface enhances water and debris evacuation
• Rust-resistant zinc silver hat finish for extended durability
• Nominal thickness of 22 mm with discard thickness at 20.4 mm
• Four bolt holes with 15 mm diameter and 100 mm bolt circle diameter
• Overall rotor diameter of 260 mm and height of 35.2 mm

Detailed Product Description

This DFC Brake Rotor - Drilled and Slotted - Silver from Dynamite Friction features a vented design that helps reduce brake fade by allowing air to circulate through the rotor during operation. The drilled and slotted surface improves braking performance by facilitating heat dissipation and removing brake dust and moisture. The directional surface pattern is optimized to channel water and debris away from the contact area, maintaining consistent friction under various driving conditions.

The rotor’s zinc silver coating on the hat area provides corrosion resistance, helping to maintain structural integrity and appearance over time. With a nominal thickness of 22 mm and a discard thickness of 20.4 mm, this rotor meets precise specifications for safe and effective braking. The 4-bolt hole configuration with a 100 mm bolt circle diameter ensures proper fitment on compatible BMW models.

DFC Brake Rotor - Drilled and Slotted - Silver Product Line

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on delivering rotors with enhanced cooling and debris management features. This product line combines drilled holes and slots with a vented rotor design to improve thermal performance and braking consistency. The silver zinc coating on the rotor hat adds rust resistance, making it suitable for vehicles exposed to varying weather conditions. This rotor line is tailored for drivers seeking reliable replacement parts for their BMW 3 Series models.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 318i, 318is, 325e, 325es, 325i, 325is, and 325iX
• Improves heat dissipation to reduce brake fade during extended braking
• Helps eliminate brake noise caused by debris and moisture buildup
• Addresses rotor corrosion issues with rust-resistant coating
• Restores braking performance compromised by rotor surface damage

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (20.4 mm) before installation
• Clean mounting surface and hub to prevent rotor runout
• Torque bolts to manufacturer specifications for secure fitment
• Check compatibility with BMW 318i, 318is, 325e, 325es, 325i, 325is, and 325iX models
• Inspect brake pads and replace if worn to optimize rotor performance

Quality Assurance and Warranty

Dynamite Friction manufactures the 631-31017L rotor to meet industry standards for durability and performance. The rust-resistant zinc silver finish and vented rotor design contribute to long service life. While specific warranty details are not provided, this rotor is produced under quality-controlled conditions to ensure consistent fit and function for compatible BMW vehicles.