Mountain-drive reduces speeds by a factor of 2.5. With mountain-drive there is normally no overlap between gears.

Mountain-drive enables you to climb steepest hills with your bike. If possible, take a slightly bigger chainring (2 or 4 teeth larger) to get higher gears as well as lower ones.

MountainDrive van Schlumpf
MountainDrive van Schlumpf  x€ 600,00