EBC GD1591 3GD Series Sport Dimpled and Slotted Disc Brake Rotors - Pair

The EBC GD1591 is a third-generation 3GD Series Sport brake rotor featuring a dimpled and slotted design for enhanced cooling, improved pad contact, and reduced brake fade. Sold as a pair, these vented rotors are precision-machined from high-quality G3000/G3500 grey iron castings and finished with a corrosion-resistant silver coating for lasting durability and a clean, aggressive appearance.

Wide-Aperture Cooling Slots

The defining feature of the GD Sport series is its wide-aperture scraper slots, which actively draw cool air beneath the brake pad and rotor interface during braking. Pad contact temperatures can exceed 1,000°F under heavy braking — the GD slot pattern has been shown to reduce rotor temperatures by up to 100°F compared to non-slotted rotors, directly combating brake fade and loss of stopping power.

Dimple-Drilled Design — No Stress Cracks

EBC invented the dimple-drilled rotor in the 1990s as a safer alternative to fully through-drilled rotors. Blind-drilled dimples allow brake pads to degas effectively without introducing the stress crack risk associated with through-drilled holes. This design has since been widely imitated throughout the industry.

Key Features:

• Vented, slotted, and dimpled construction for maximum heat dissipation
• 13.20 in. rotor diameter; sold as a pair
• Wide slots expel water, mud, dust, and debris from the braking surface
• Maintains flat, parallel pad wear to prevent rotor ribbing and uneven contact
• Passed European R90 brake safety certification
• Directional design — sweeping grooves and dimple pattern should face toward the rear of the vehicle
• Silver anti-corrosion finish protects against rust and road salt
• 100% runout, metallurgy, and dimensional inspection before release
• Machined and finished in the UK or USA

These rotors are an ideal upgrade for performance street driving and are compatible with EBC Greenstuff, Yellowstuff, and Redstuff brake pad compounds. Note: as with all slotted rotors, some increase in brake noise under the pad is normal — drivers seeking a quieter option should consider the EBC USR Sport rotor series.