Hawk HB664F.634 Street Performance Pad - HPS Compound Vehicle Make_Audi The outer layer covering is

The outer layer covering is soft

the Solo 2 DL adds OBD connectivity to your vehicle for instant access to ECU data on your laptimer display

Replace your original cast aluminum control arms

Approved for use by SCCA

Hawk HB664F.634 Street Performance Pad - HPS Compound Vehicle Make_Audi The outer layer covering isHawk HPS Brake Pads are the worldwide aftermarket standard for increasing stopping power on your street car. The unique Ferro Carbon compound offers a higher coefficient of friction over stock pads, increasing stopping power by 20 40% and providing a greater resistance to brake fade. Best yet, the HPS pads are gentle on rotors, wear great, and are very low dust with minimal noise.