Dynamite Friction 631-02021R Disc Brake Rotor - Rear Right

Rear Right Drilled and Slotted Rotor for Porsche

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver, part number 631-02021R, is a vented rear right disc brake rotor built for select Porsche applications. It combines a slotted X drilled surface with a zinc silver hat finish and rust resistant coating for a clean, service-ready appearance.

Compatible with 1987-1995 Porsche 944, 1989-1994 Porsche 911, and 1992-1995 Porsche 968 rear right positions, this rotor is sized for vehicles that use a 299 mm outside diameter, 130 mm bolt circle, and 5-lug pattern. The directional braking surface and vented construction support consistent brake surface contact and heat management.

Key Features

• Part number 631-02021R
• Drilled and slotted X drilled brake surface
• Vented disc brake rotor construction
• Directional brake surface design
• Zinc silver hat finish with rust resistant coating
• 5 bolt holes and 5 stud/lug holes
• Outside diameter: 299 mm
• Bolt circle diameter: 130 mm
• Center hole diameter: 103 mm
• Nominal thickness: 24 mm; discard thickness: 22 mm

Product Details

Dynamite Friction’s DFC Brake Rotor - Drilled and Slotted - Silver line focuses on brake rotors with a finished appearance and functional surface machining. This rotor uses a plain disc finish with a zinc silver hat finish, while the rust resistant coating helps maintain the rotor’s appearance in exposed brake areas. The vented design and directional slot-and-drill pattern are specified for the rear right side on the listed Porsche fitments, including Porsche 944, Porsche 911, and Porsche 968 models.

Common Brake Issues This Rotor Can Address

• Uneven rotor wear on the rear right brake corner
• Brake fade from heat buildup in repeated stops
• Surface glazing on an aging rear rotor
• Corrosion on exposed rotor and hat surfaces
• Brake pulsation caused by a worn or out-of-spec rotor

Installation Notes and Tips

Verify rear right fitment against the vehicle’s brake specifications before installation. Confirm the rotor matches the required 5-lug, 130 mm bolt circle, 299 mm outside diameter, and 103 mm center hole diameter. Measure the existing rotor before replacement and compare nominal thickness and discard thickness to service limits. This part cross-references no listed alternate part numbers in the provided data.

Quality Assurance

Built to the listed dimensional and finish specifications for the confirmed Porsche applications, this rotor is intended for direct replacement use on the specified rear right positions. The rust resistant coating and zinc silver hat finish add corrosion protection to the rotor’s exposed surfaces.