The Fitness Master X Series Momentum Indoor Cycling Bike features a robust 44 pound flywheel. This allows the movement to be more controlled and smooth. The seat and handlebar can both be adjusted horizontally and vertically, which provides great flexibility for those who are taller or shorter than average. Because it uses a belt instead of a chain, the bike rides very quietly. The tension knob has a quick response and has many levels so you can constantly challenge yourself. The transition when adjusting resistance is barely noticeable. Read more...