05 compounds have gained immediate favor in the NASCAR, Sportscar, and Open Wheel racing due to its performance in applications where smooth initial bite is a must especially where coil bind type front setups are used such as in NASCAR. 05 have virtually no friction rise with temperature, with excellent release and modulation characteristics. Very low abraded disc wear with a fine micronic polished disc finish. This compound demands the most from the vehicle setup and is designed to handle the most severe applications. 05 will be replaced with 13 compound. 05 Recommended Applications: For high grip, high downforce, or severe duty applications. NASCAR Short Track and Road Course, IndyCar, F-Nippon, Indy Lites, Professional GT, and Daytona Prototype.