An adapter enables a rider to adjust an angular orientation of a binding relative to a sport board without removing a foot, comprising a base plate, a top plate, and a locking mechanism supported by the top plate having a pair of insertion members configured to selectively engage a plurality of recesses formed in the base plate. The top plate and base plate can each have a center opening and a fastener supported by the center opening of each of the top plate and base plate to axially couple the top plate to the base plate.