Here’s another example of newer materials in some circumstances working better. These discs are lined with a special Keblar designed for this function with the oil and have an incredible grip, that together with the option of being able to choose 3 types of spring hardness make it a great option to solve one of the big failures of bultaco ,the clutch. There are 3 types of spring hardness depending on the use of the motorcycle road, field, competition. (fig. 25)