Raybestos — Raybestos R 820 Brake Pads, Porsche 911 GT3 CUP Grand-Am

Raybestos ST41

The best high energy input racing material available. Extremely successful in all the top three NASCAR Series Raced by the 2002 NASCAR Champion Tony Stewart. Maintains high mu level at extremely high temperatures without sacrificing good wear - both pad and rotor. The ST41 needs some heat to work well.

Raybestos ST42

Lower mu than ST-41 and ST-43. Extremely stable average and in stop output over a wide temperature range. Has been very successful when used on the rear brakes in conjunction with the ST41 on the front. Best high-temperature wear of all their materials.

Raybestos ST43

Excellent wear rate on rotors and pads. Friction level between ST-47 and ST-42. This is the most popular compound for HPDE, Open Track and Endurance racing.

Raybestos ST45

Lower friction level than the ST-47. Slightly higher friction level than ST-43 while maintaining good rotor and pad wear. Could be used as a great rear to compliment the ST-47 compound.

Raybestos ST47

Has the highest friction and torque available to date. It has been engineered for long-lasting extreme heat situations and maximum rotor life. If you are looking for the most advanced-performing road race brake pad, that will simply out perform all the rest, this is it.