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Project Mu D1 Spec (often stylized as D1spec) is a specialized lineup of high-performance brake pads designed specifically for drifting and gymkhana. They feature extremely high initial friction, intentionally engineered to require minimal driver effort to lock the rear wheels and initiate slides. [1, 2, 3]

Core Specifications

Intended Use: Exclusively for competition, drifting, and gymkhana (not recommended for general street/circuit use).
Friction Material: Super Graphite Metallic.
Temperature Range: \(0\text{°C}\) to \(380\text{°C}\)
Rotor Suitability: Ideal for use on radials (street tires).
Key Characteristic: High, aggressive initial bite to help reduce the pedal force needed to break rear traction