If you want a great way to exercise, cross-train or just have fun, the Top End Excelerator handcycle is what you need. This extremely stable and maneuverable upright three-wheel handcycle is capable of speeds up to 15 mph. The smooth Shimano shifter lets you tackle hills or level terrain with equal ease. The 7-speed Shimano hub, with reverse braking, means your hands never have to leave the handles to stop or fumble to find a neutral zone back-up. And, with the fully adjustable chain tension idler, there is no need to add or remove chain links with crank height adjustments.