Not THAT mad - only 48/18 (71,4 gear inches/5,7 meters development). Not fixed gear, just single-speed. Seems about right, that is, not very good for climbing, not very good at descents, just fine on flats. Comfortable speed for me on this bike is 27...35 km/h, I spin out at around 45 km/h. Weighs around 12 kg/27 lbs without lock, panniers and lights. Low-end MTB gas pipe frame there. Average loaded weight around 16 kg/35 lbs.