This is my Dahon Boardwalk. I recently took it out of storage and started riding it again after several years. I have replaced the seat (Brooks B17), crank and bottom bracket (the original crank / bottom bracket was thoroughly terrible), wheels (including hubs with QR skewers), grips, and shifter (I hated the grip shift and so replaced it with a Shimano Rapidfire shifter, which is way better). Much more enjoyable to ride after my changes.