The PAGID RS29 (Yellow) is the world-leading endurance brake pad used by most of the winning teams in motorsport. The racing compound combines the outstanding wear rate of the RS19 with a slightly higher coefficient of friction and initial bite. Based on the RS14, A slight reduction of the friction value improves the modulation (controllability). Nevertheless, the friction value is enough for cars without power-assisted brake system and ensures comfortable low effort on the brake pedal. Constant temperatures up to 600 C (1,100 F) are possible. This combination of friction value, fading stability and low wear rates on pads and discs (rotors) is unmatched. Due to its excellent release characteristics and controllability PAGID endurance materials are also often used for sprint races.
Pagid RS29 with a very similar friction coefficient to RS19 with improvements in initial bite offering quicker response and slightly more temperature stable at the upper levels of the temperature range. Developments in raw material selection and compounding have resulted in improvements also in pedal feel and feedback, helping with modulation particularly on lighter applications.
This material provides very good levels of performance and response at all temperature levels, only slight temperature inputs are required to bring the pad up to its optimum performance level. Another favourite with endurance racers having won many classes at all major endurance events, such as Le-Mans, Daytona, Spa, Nurburgring, etc. Due to the exceptional pad life and very low wear on brake discs it has been possible to run 24 hours without a change of pads or discs. Able to withstand slightly higher disc temperatures than RS19, this has proved more suitable for applications running very high disc temperatures.
Although designed primarily for endurance racing, because of the consistent levels of performance and user friendliness many competitors use this material successfully for sprint and short distance races also. RS29 has also found favour in the growing track day market due to the level of control, good cold performance, long life and low disc wear.
A Carbon based friction material developed from RS4-2 but with a progressively increasing friction curve, giving it lower friction than RS4-2 below 300 c and higher friction above 300 c. It offers slightly less initial bite and low temperature response than RS4-2, but with the same high levels of controllability.
The wear rate of RS4-4 is very similar to RS4- 2, but is slightly better in terms of wear at higher temperatures. Disc wear as with all other PAGID materials is exceptional and thermal stressing and tension cracks of the disc surface are greatly reduced.
RS4-4 also has extended operating temperature limits, increasing fade resistance, and allowing braking deeper into the corner without wheel lock and fading issues.
This compound is available in fewer pad shapes than RS4-2, and is particularly popular in Porsche club racing, and has been fitted as an OEM on such high performance road vehicles as Porsche 993 RS and GT2 for example. In road applications this compound exhibits low brake noise.
A very versatile pad for use on both front and rear axle’s, is also a very good rear pad in conjunction with RS14 / RS15 on front axles of front wheel drive touring cars, etc.