EBC GD7720 3GD Series Sport Dimpled and Slotted Vented Disc Brake Rotor Set

The EBC GD7720 3GD Sport Brake Rotors are a precision-engineered, dimpled and slotted upgrade rotor set designed for performance street driving, sport sedans, trucks, and SUVs. Sold as a 2-wheel set, these vented rotors measure 321mm (12.6 in.) in diameter and are compatible with FMSI Pad No. D1001.

Wide-Aperture Slot Technology:

• Full-sweep wide aperture slots draw cool air directly under the brake pad-to-rotor interface, helping reduce pad contact temperatures that can exceed 1,000°F during heavy braking
• Slots help brake temperatures run up to 200°F cooler than non-slotted rotors, significantly reducing brake fade under load
• Removes dirt, dust, debris, gases, and water from the braking zone for consistent stopping power in all conditions
• Slots maintain flat and parallel pad wear throughout the life of the pad set, improving pad contact and braking response

Dimple-Drilled Design:

• EBC pioneered dimple drilling — it provides the pad degassing benefits of through-drilled rotors without the stress crack risk associated with fully drilled holes
• Reduced 3-slot venting pattern lowers air noise under hard braking while preserving the full cooling benefits of the slot design

Construction and Quality:

• Cast from OE-spec grey cast iron — the same material used in original equipment vehicle production
• Machined and finished in the UK to exacting tolerances
• Every rotor undergoes 100% individual runout inspection plus testing for element analysis, grain structure, tensile strength, hardness, and ductility
• Long-lasting Geomet silver corrosion-resistant finish protects the rotor surface and provides a clean, performance appearance
• Passed European R90 brake safety certification standards

Specifications:

• Series: 3GD Sport
• Rotor Diameter: 321mm (12.6 in.)
• Rotor Height: 51mm (2.0 in.)
• Rotor Thickness: 30mm
• Construction: Vented
• Bolt Holes: 5
• FMSI Pad No.: D1001
• Sold as: 2-Wheel Set (Pair)

The EBC GD7720 is an excellent choice for performance street driving, towing, and spirited use where consistent, fade-free braking is a priority. For a quieter slotted option with similar performance, consider EBC's USR Sport Rotor series.