A seat assembly for a motorcycle includes a rider seat having a forward end and a rearward end, a mounting bracket pivotally coupling the forward end of the rider seat to a frame of a motorcycle, the rider seat being pivotable to raise the rearward end of the seat, and a support arm. The seat assembly further includes a rear seat support having a first end portion and a second end portion, the first end portion being pivotally coupled to the support arm and the second end portion supporting a rear seat. The rear seat support is pivotal from a first position in which the rear seat is hidden from view below the rider seat to a second position in which the rear seat can support a passenger. The seat assembly also includes a stop feature for supporting the second end portion relative to the support arm and a lock feature for inhibiting pivoting of the rear seat support.