The Argo cargo attachment can easily go on almost any bike (check out their website for compatability) and all the electric components are in the add-on. It's currently on a Kona Lava Dome. I can't remember the frame size but it fits me at 5'1 perfectly. I can sell it as a package or as just the Argo. https://argobikes.com/products/argog (Remember the prices on here are in USD and to add the electric kit) Would also trade for a long tail cargo bike like the Yuba.