SP Performance D30-346-P Diamond Slot Dimpled and Slotted Brake Rotor Set Silver Zinc Plating

The SP Performance D30-346-P Diamond Slot brake rotors combine directional linear slots with unique diamond-shaped dimples to deliver enhanced braking performance over standard replacement rotors. Unlike cross-drilled rotors, the diamond dimples keep the braking surface cool without the risk of stress cracks, making them a more durable high-performance upgrade.

The slots sweep brake dust away from the pad and rotor contact surface while venting the expanding gases that build up under repeated hard braking — gases that would otherwise push the brake pad away from the rotor and cause brake fade. The result is a firm, consistent brake pedal feel in both street and performance driving conditions. Wet-weather braking is also improved, as the slotted surface prevents hydroplaning between the pad and rotor.

Key Features:

• Unique diamond-shaped dimples (slots) keep braking surfaces cool without the cracking risk of cross-drilled holes
• Directional slots vent expanding gases, reduce brake fade, and sweep brake dust away from the pad surface
• Slots improve wet-weather braking by preventing pad-to-rotor hydroplaning
• Silver zinc plating provides corrosion, rust, and oxidation resistance
• Machine balanced and double disc ground to meet or exceed OEM specifications
• Designed using CAD software and produced on CNC machines for consistent quality
• Direct bolt-on replacement — no brake system modifications required
• Sold as a pair
• Backed by a lifetime warranty against manufacturing defects

SP Performance Diamond Slot rotors are machined and plated to order, ensuring a fresh, high-quality finish on every set. The silver zinc coating delivers a clean, aggressive look behind the wheel while protecting the rotor from everyday corrosion.