Features:1. A perfect replacement for the original ceramic piston, to prevent side leakage, make the brake safer, full and longer braking force.2. Good sealing, strip groove design, reduce heat transfer contact area, increase air flow shuttle, Good for heat dissipation 3. The hurricane heat dissipation shape, the front turbine fan-shaped fan wind heat dissipation, to make the heat dissipation faster 4. Perfect replacement of the original ceramic piston, to prevent side leakage, so that the use of more moisture, more durable 5. Can reduce the contact area for heat transfer, increase air shuttle, and promote heat dissipation.Notice:*Actual color may be slightly different from the image due to different Display and light effect*Please allow 1-3cm deviation due to manual measurementDescription:Size: 21.9mm*9mm