Description: RST 4 is a semi metallic resin bonded material containing steel and acrylic fibers. This material has a medium friction level and high temperature resistance.
Applications: Formula cars and open wheel racing. Rear axle material for Rally (tarmac and gravel) and for all front engine cars. Also used in NASCAR on long ovals.
Description: RSL 19 is a low metallic resin bonded material containing steel and acrylic fibers. It maintains a constant friction level across a broad range of temperatures. The material features very good modulation and release characteristic.
Applications: Rear axle usage in combination with RSL 1 and RSL 2 on the front axle in heavier cars (GT3/GTE). Front axle usage for lighter GT and Touring cars.￼￼￼￼
Description: RSL 29 features very good modulation and release characteristics. It is a low metallic resin bonded material containing steel and acrylic fibers.
The friction level of the material maintains constant at a low-medium level. Another advantage is the easy bedding in behavior.
Applications: Very popular in club racing and track days. GT cars, Touring cars and prototype endurance racing.
Due to excellent modulation characteristics also often used in sprint races