Chain sprocket 11 teeth, chain pitch 428 suitable for Minarelli AM engines. By changing the number of teeth on the front drive sprocket, you can influence the speed or acceleration. A higher number compared to the original usually means an increase in top speed and slightly lower acceleration if the rear sprocket remains unchanged. A lower number of teeth leads to more acceleration and reduced top speed. Even a difference of 1 to 2 teeth leads to significant changes.