A device for a gear shift system for a vehicle, the gear shift system comprising a gear shift member, the device comprises a device member, and a member connector configured to connect to the gear shift member and thereby connect the device to the gear shift system so that, in use, one of the device member and the gear shift member is beneath a rider's foot to provide a first member, and the other of the device member and the gear shift member is above the rider's foot to provide a second member, wherein in use downwards movement of the first member effects a first gear shift and in use upwards movement of the second member effects a second gear shift.