Dynamite Friction 631-40121R Disc Brake Rotor - Rear Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-40121R) is engineered for reliable braking performance on Ram 1500 and 1500 Classic models. Designed with a directional, slotted and drilled surface, this rotor enhances heat dissipation and braking efficiency under demanding conditions.

• Compatible with Ram 1500 and 1500 Classic models
• Directional slotted and drilled disc surface for improved cooling
• Nominal thickness of 22 mm with discard thickness at 20.4 mm
• Rust-resistant zinc silver hat finish for durability
• Six bolt holes with 17 mm diameter and 139.7 mm bolt circle diameter
• Outside diameter of 375 mm and height of 53.44 mm
• Center hole diameter of 78.42 mm for precise fitment

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 that combine drilled holes and slots to optimize brake pad contact and heat dissipation. This design helps reduce brake fade and maintain consistent stopping power. The silver zinc coating on the rotor hat provides corrosion resistance, extending the rotor's service life in various driving environments.

Technical Description and Specifications

This disc brake rotor features a plain disc finish with a directional surface type that is both drilled and slotted. The rotor's nominal thickness is 22 mm, with a discard thickness of 20.4 mm, ensuring safe replacement intervals. The rotor includes six bolt holes, each 17 mm in diameter, arranged on a 139.7 mm bolt circle diameter, matching the Ram 1500 and 1500 Classic specifications. The zinc silver hat finish offers rust resistance, protecting the rotor from corrosion and environmental wear. With an outside diameter of 375 mm and a height of 53.44 mm, this rotor fits precisely to maintain optimal braking performance.

Applications and Problem Solving

• Improves braking performance for Ram 1500 and 1500 Classic trucks
• Reduces brake fade during heavy braking or towing
• Enhances heat dissipation to prevent rotor warping
• Resists rust and corrosion for longer rotor life
• Maintains consistent brake pad contact with slotted and drilled design

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 20.4 mm before installation. Clean the rotor surface to remove any protective coatings or debris. Verify bolt hole alignment with the vehicle’s hub using the 139.7 mm bolt circle diameter and six bolt holes. Proper torque specifications should be followed to avoid rotor warping. The directional surface requires correct orientation during installation to maximize performance.

Quality Assurance

Dynamite Friction manufactures the 631-40121R rotor to meet OEM standards for fitment and durability. The rust-resistant zinc silver coating and precise machining ensure consistent performance and longevity. Warranty information is available through the manufacturer and should be consulted for specific coverage details.