The asymmetric camshaft from Siebenrock has been designed for all 2V Boxers from the model year 1979 onwards and provides a convincing and powerful performance over the entire revs range. We would highlight especially, however, the mid-range revs in which the power of the machine is effectively assisted by the use of this shaft. Very good response and a more than convincing torque in pulling away are immediately noticeable in the modified twin.