DS2500 This race developed pad has all the qualities required for an excellent high performance street pad. Its consistent coefficient of friction at any temperature gives very predictable braking and great pedal modulation. This new generation of friction material is very low in compressibility ensuring a firm pedal feel, while still providing great life for both rotor and pad.
The main characteristics of the DS2500 compound are:
DS3000 is Ferodo's premium racing compound and has set the standard across circuit racing and the World Rally Championship. DS3000 has contributed to countless wins and podium positions in the WRC, BTCC, STW and is now experiencing major success in Indycar and NASCAR applications.
The main characteristics of the DS3000 compound are:
When using this material with light inertia racing cars, as a general rule, it is necessary to apply less brake pedal pressure than you would normally expect. This will avoid over-braking and the generation of excessive heat in the braking system and discs.
WARNING: DS3000 is NOT suitable for road use.

Chart courtesy of http://www.ferodoracing.com