The mods I did to the bike are probably not recommended by the manufacturer. When I take the crate off, it works fine carrying a pax. But it probably goes above max payload depending on the weight of the pax. I installed BMX pegs for footrests. That works excellent keeping feet above the derailer cage. I purchased the pax seat from Amazon. It looks and works like it was made for the bike. We love cruising around the local area doubled up. I keep a close watch on the back rim and spokes. Working without problem so far.The motor/gears have lots of power. The backstays and cargo rack on this bike are built very beefy. I highly recommend the AMS chainstay protectors. They are made in Spain. Easy to install. You can zoom in to see the application. I put leftover on the seat post. The chainstay protector that came with the bike was not very good. So I am very happy with my light electric utility machine.