W3 is designed around the serious hobbyist.
Keeping in mind, the needs of short track racing, autocross, and open track events, The W3 will expand the capability of the driver through pedal-to-braking force control that rivals racing pads, yet is tame enough for street use.
The W3 is a Semi-Metallic compound with rare-metals and composites blended to give the enthusiast the capability needed for amateur racing.
Due to the nature of all metallic brake pads, the W3 may exhibit some noise and dust compared to non-metallic W1 and W2.

Special Brake Pad Compound For The Dual Purpose Sports And Circuit Racing Vehicle.