PBS ProTrack Front Brake Pads Lamborghini Diablo Gallardo MurcielagoThe ProTrack compound is also ceramic metallic material that has milder initial bite than the ProTrack compound the with excellent control and feel with powerful stopping power 0. 40 to 0. 48mu this compound is designed for light occasional track use or wet conditions and for race series that have to use a low grip Tyre with less noise and dust Working temp 0 700c