Dynamite Friction 631-63090L Disc Brake Rotor - Front Left

Drilled and Slotted Front Left Rotor for Smart Fortwo

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver, part number 631-63090L, is a front left disc brake rotor for select Smart Fortwo models. It combines a slotted X drilled surface with a zinc silver hat finish and rust resistant coating for a clean, service-ready appearance.

• Fits 2005-2016 Smart Fortwo, front left
• Part number: 631-63090L
• Surface type: slotted X drilled
• Directional brake surface for the specified side and position
• Solid rotor design
• Outside diameter: 280 mm
• Nominal thickness: 9.5 mm
• Discard thickness: 8 mm
• Center hole diameter: 58 mm
• Bolt circle diameter: 112 mm
• 3 bolt holes and 3 stud/lug holes with 12.7 mm diameter
• Plain disc finish with zinc silver hat finish
• Rust resistant coating: yes

Product Line Details

This DFC Brake Rotor - Drilled and Slotted - Silver is part of Dynamite Friction’s DFC rotor line, which focuses on application-specific brake rotors with a finished appearance and corrosion protection. For Smart Fortwo front brake service, 631-63090L provides the listed dimensions and directional surface pattern needed for the correct front left position.

Detailed Description

Built for the front left position on 2005-2016 Smart Fortwo models, this rotor is specified with a 280 mm outside diameter, 38.2 mm overall height, and a 58 mm center hole diameter. The slotted X drilled braking surface is directional, so correct side placement matters during brake service. The solid rotor construction, 9.5 mm nominal thickness, and 8 mm discard thickness provide the dimensional references needed when comparing against the existing rotor. The zinc silver hat finish and rust resistant coating add corrosion protection to the rotor’s exposed surfaces, while the plain disc finish keeps the braking face straightforward for service use. If you are searching for a Smart Fortwo front left brake rotor, 631-63090L matches the listed fitment and dimensions for the application.

What This Rotor Helps Address

• Front left rotor replacement on a Smart Fortwo with the listed fitment
• Brake surface wear that has reached discard thickness
• Corrosion on the hat area or rotor surfaces
• Rotor replacement needs where a directional drilled and slotted design is specified
• Brake service on vehicles requiring the 280 mm, 3-bolt pattern rotor configuration

Installation Notes and Tips

Confirm the vehicle is a 2005-2016 Smart Fortwo and verify the front left position before installation. Because this rotor uses a directional brake surface, install it on the correct side and match the rotor orientation to the vehicle’s braking layout. Compare the existing rotor’s outside diameter, center hole diameter, bolt circle diameter, and thickness measurements before service. Inspect pads, caliper condition, and hub mounting surfaces during brake work to ensure proper rotor seating.

Quality Assurance

Dynamite Friction supplies this rotor with a rust resistant coating and zinc silver hat finish for added surface protection in normal brake service conditions. Part number 631-63090L is built to the listed specifications for the Smart Fortwo front left application.