The intake of the fuel-air mixture into the cylinder is controlled by the vacuum generated in the cylinder via the reed valve which is equipped with so-called reed petals (or reed blades). Since the petaks move at a tremendous speed and are therefore subject to heavy wear, they must be replaced at regular intervals. Our selection of replacement reed petals is huge - carbon, glass fibre or original. The actual reed valve block can be replaced by a high performance block, the most well-known is the V-Force 3 / 4 by Moto Tassinari. We also have reed valve spacers, which can be used to increase the volume of the intake system, and various other small parts.