The clutch of a motorcycle is generally a multi-plate oil bath type. (Exception: for Ducati and Aprilia brands which have dry clutches). We recommend changing the set of plates (friction plates and steel plates), as well as the springs and the clutch cover gasket for better efficiency. The complete clutch disc kit includes both "smooth" type discs and "friction" type discs, and they are identical to your original discs. Their replacement is simple and quick.