I have an EZ-Tad SX, (the thing in my avatar but now it is torn down to be a plain trike now). That model or the EZ-Tad CX would probably handle 300 pounds. As it was in the photo it was over 200 pounds. I have a skinny Optima C-F seat on it now so the streamliner fairing would fit but the web seat it had originally would support a big person. I can say it was terrific modified! Very well balanced per wheel.