Performance Friction Brake Pad 97 Compound. A Favorite of sports car endurance and NASCAR racing since its debut, winning races in CART, ALMS, Grand Am, ASA and Club Racing, 97 Compound has less initial bite and average torque than 01. It has great modulation, a very flat torque curve, and enhanced release characteristics. 97 is considered PFC "Endurance Compound" with the lowest wear of any PFC Compound and is also highly recommended as a general-purpose pad for Club Racing and Track