Fiori Duo tandem works for taller front and short/medium rear. Currently set up for adult/kid. Front fits about 5'10 and up, rear is good for kids with pedals professionally set up by Fairfield cycles for smalller legs, but can easily be set up for adults as well. Marzocchi Bomber M2 forks up front. High quality tandem-specific 48 spoke wheels to handle the extra weight. Aluminium frame is very light for such a big bike, and can easily be lifted and moved by a single person.