With different pinion sizes, the gear ratio can be varied. Smaller pinions increase the RPM and improve acceleration, while larger pinions reduce the RPM at the rear wheel and increase top speed. At the same time, there is always a loss of top speed with smaller pinions and a loss of acceleration with larger pinions. This pinion is originally installed in the following vehicles, among others: - Cilo 515, type certificate CH-7595 -> original gear ratio 47 x 10Z.