The Northville D & D Bicycle has been at its present location for more than 20 years, and it has four other stores. It carries bicycles for children and adults as well as cycling apparel, helmets and accessories. D & D does in-store repairs and tune-ups, offers workshops, accepts bike trade-ins and has a rewards program. To participate in D & D weekly group road or mountain bike rides, please see its website for dates and times.