Dynamite Friction 830-40120L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Geoperformance Rotor

The Dynamite Friction DFC Geoperformance Rotor - Drilled and Slotted (part number 830-40120L) is engineered for Ram 1500 trucks requiring reliable braking performance. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance heat dissipation and maintain consistent stopping power under demanding conditions.

• Compatible with Ram 1500 models
• Directional slotted and drilled surface for improved brake pad bite and cooling
• Vented rotor design to reduce heat buildup
• Nominal thickness of 30 mm with a discard thickness of 28.4 mm
• Rust resistant coating for extended rotor life
• Geospec silver grey hat finish for corrosion protection and aesthetics
• 6 bolt holes with 17.3 mm diameter and 139.7 mm bolt circle diameter
• Outside diameter of 378 mm and height of 67.84 mm

Detailed Product Description

The 830-40120L rotor from Dynamite Friction’s DFC Geoperformance Rotor - Drilled and Slotted line is designed specifically for the Ram 1500, providing a precise fit and reliable braking performance. The rotor’s vented construction allows air to flow between the rotor faces, reducing heat buildup during heavy braking. The directional slotted and drilled surface improves pad bite and helps evacuate gases, dust, and water, which can otherwise reduce braking efficiency.

The rotor features a nominal thickness of 30 mm and a discard thickness of 28.4 mm, ensuring durability and safety over its service life. The hat section is finished in Geospec silver grey, which offers corrosion resistance and a clean appearance. Additionally, the rotor is coated with a rust-resistant layer to protect against environmental damage, extending the rotor’s usable life.

DFC Geoperformance Rotor - Drilled and Slotted Product Line

The DFC Geoperformance Rotor - Drilled and Slotted product line focuses on delivering rotors with enhanced thermal management and surface design. The drilled and slotted features are engineered to improve braking performance by increasing friction and heat dissipation, making them suitable for trucks like the Ram 1500 that may encounter heavy-duty or performance driving conditions. This line balances durability with functional design elements to maintain consistent braking under stress.

Common Applications and Problem Solving

• Reduces brake fade caused by excessive heat during towing or heavy loads
• Improves braking response in wet or slippery conditions by channeling water away
• Minimizes rotor warping through vented design and heat dissipation
• Prevents rust and corrosion for longer rotor lifespan
• Maintains consistent braking performance for Ram 1500 trucks

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 28.4 mm before installation. Properly clean the rotor surface to remove any protective coatings or residues before mounting. Verify bolt hole alignment with the Ram 1500 hub using the 6 bolt holes and 139.7 mm bolt circle diameter. Use appropriate torque specifications for the 6 lug nuts to avoid rotor damage or uneven wear.

Quality Assurance

Dynamite Friction rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The rust-resistant coating and Geospec silver grey hat finish contribute to long-term durability. While specific warranty details are not provided, the product is designed for reliable performance and longevity when installed and maintained according to manufacturer guidelines.