The base plate is the floor of your cargo area: the flat deck that everything else bolts to, and often the first thing owners swap to upgrade a bare frame. Choices split by material. Wooden and plywood decks from United Cargobike, Badger Bikes, and Customz look warm and damp sound; aluminium and plexi boards from Velogut sit lighter and shrug off weather; protective deck plates like Rad3's Schutzdeck guard the original floor from scuffs and load. Rail-based systems from Cargobike-Utility add slots so boxes and straps clip on and off without tools.
Prices run from around 35 EUR for a rear extension to close to 580 EUR for a full rail deck, so there's a fit for a simple refresh and for a modular build. Before you buy, check the plate is cut for your exact platform, since most here are Bullitt or Omnium specific, and whether it's a finished board or a DIY blank you'll cut yourself.
Fitting a box on top? See hard boxes. Adding straps and nets? Browse box accessories.
