Profile Design ZBS J Bend Aerobars. When every second counts, the Profile Design ZBS J Bend Aerobar is the perfect means to achieve an aero advantage and blaze through your next time trial or triathlon cycling leg. The ZBS brackets deliver a lower arm position while the anatomic armrests provide added adjustability to ensure a perfect, dialed in fit. It's not enough to be aero, though, but don't worry as the 6061 T6 aluminum construction throughout is both lightweight and durable so you know they're built to last as well. Mount these on a road bar or bullhorn bar for your next ride against the clock.