Dynamite Friction 633-40118L Disc Brake Rotor - Rear Left

Rear Left Drilled and Slotted Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black is a rear left disc brake rotor built for Ram heavy-duty trucks that need a direct-fit replacement with a vented, directional braking surface. Part number 633-40118L features a slotted X drilled design, zinc black hat finish, and rust resistant coating for service in demanding brake environments.

Key Features

• Part number 633-40118L rear left disc brake rotor
• Slotted X drilled surface type with directional brake surface
• Vented rotor construction for rear axle applications
• Plain disc finish with zinc black hat finish
• Rust resistant coating for added corrosion protection
• 8 bolt holes with 165 mm bolt circle diameter
• Outside diameter: 358 mm; overall height: 125 mm
• Nominal thickness: 34 mm; discard thickness: 32.4 mm

Product Details

This Dynamite Friction rotor is engineered for rear left fitments on Ram 2500, Ram 3500, Ram 4000, and Dodge Ram 2500 and Ram 3500 applications listed below. The drilled and slotted braking surface helps maintain consistent pad contact, while the vented rotor design supports heat management during repeated stops. The black zinc hat finish and rust resistant coating add protection where brake components are exposed to road moisture and debris. Part number 633-40118L is a direct replacement choice for drivers servicing Ram 2500 and Ram 3500 rear brake systems.

Vehicle Fitment

• Fits 2011-2025 Ram 2500, rear left.
• Fits 2023-2025 Ram 3500, rear left, 11.5 inch rear axle.
• Fits 2019-2022 Ram 3500, rear left, Brake Hydraulic Hose: SRW.
• Fits 2019-2022 Ram 3500, rear left, SRW; High Output HD Transmission; 12 inch rear axle.
• Fits 2019-2022 Ram 3500, rear left, SRW; Standard Output Transmission; 11.5 inch rear axle.
• Fits 2011-2018 Ram 3500, rear left.
• Fits 2011-2018 Ram 4000, rear left.
• Fits 2009-2010 Dodge Ram 2500, rear left.
• Fits 2009-2010 Dodge Ram 3500, rear left.

Common Repair Uses

• Rear brake rotor replacement for worn or below-spec surfaces
• Correction of brake pulsation caused by rotor wear or uneven contact
• Service replacement for corrosion-damaged rear brake rotors
• Restoration of braking performance on Ram 2500 and Ram 3500 rear axles
• Replacement for rotors that have reached discard thickness

Installation Notes

Verify rear left position, bolt pattern, axle configuration, and rotor dimensions before installation. Confirm the 8-lug 165 mm bolt circle, 358 mm outside diameter, 123 mm center hole diameter, and the listed axle or transmission notes for your Ram 2500 or Ram 3500. Because this rotor uses a directional braking surface, install it in the correct orientation for the left rear side.

Quality Assurance

Dynamite Friction supplies this rotor with a rust resistant coating and corrosion-protective black hat finish to support long-term brake service. Part number 633-40118L is built to match the listed OE-style fitments for Ram and Dodge Ram rear left applications.