Dynamite Friction 631-52003L Disc Brake Rotor - Rear Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-52003L) is engineered for Pontiac Fiero models requiring reliable disc brake performance. This rotor combines a solid design with directional drilled and slotted surfaces to support effective braking under various driving conditions.

• Compatible with Pontiac Fiero vehicles
• Part number: 631-52003L
• Solid disc brake rotor with drilled and slotted surface
• Nominal thickness of 12.5 mm and discard thickness of 10.9 mm
• Rust-resistant zinc silver hat finish
• Directional brake surface for optimized performance
• 5 bolt holes with 13 mm diameter and 100 mm bolt circle diameter
• Overall diameter of 246 mm and height of 45.9 mm

Product Line Details: DFC Brake Rotor - Drilled and Slotted - Silver

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on rotors designed with enhanced heat dissipation and improved braking response. The drilled and slotted surface pattern helps reduce brake fade by allowing gases and debris to escape, while the solid rotor construction provides consistent contact and durability. The zinc silver coating on the rotor hat offers corrosion resistance, extending the rotor's service life.

Technical Specifications and Features

This disc brake rotor features a nominal thickness of 12.5 mm and a discard thickness of 10.9 mm, ensuring safe replacement intervals. The rotor is solid rather than vented, with a directional surface type combining drilled holes and slots to improve water and dust evacuation. The rotor’s bolt hole diameter is 13 mm, with five bolt holes arranged on a 100 mm bolt circle diameter, matching the Pontiac Fiero’s hub specifications. The center hole diameter measures 57.9 mm, and the overall diameter is 246 mm, with a height of 45.9 mm. The rotor’s hat is finished with a rust-resistant zinc silver coating, while the disc surface is plain finished to maintain consistent braking performance.

Applications and Problem Solving

• Replacement rotor for worn or warped Pontiac Fiero brake rotors
• Improves braking performance by reducing heat buildup and brake fade
• Helps prevent rust and corrosion on the rotor hat for longer service life
• Addresses brake noise and vibration issues caused by uneven rotor surfaces
• Supports directional braking systems with optimized drilled and slotted design

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 10.9 mm before installation. Clean the hub surface and rotor mounting area to prevent runout and vibration. Use the correct torque specifications for the 5 lug bolts with 13 mm diameter on a 100 mm bolt circle. Verify the rotor’s directional surface orientation matches the vehicle’s rotation direction for optimal performance. No additional hardware is included, so reuse or replace mounting bolts as needed.

Quality Assurance

Dynamite Friction manufactures the 631-52003L rotor to meet OEM specifications for the Pontiac Fiero. The rust-resistant zinc silver coating and solid rotor design contribute to durability and consistent braking performance. While no specific warranty information is provided, Dynamite Friction products are engineered to maintain safety and reliability under normal operating conditions.