The Beretta TRX-100 is a mountain bike to enjoy your adventures off-road. The dimension of the wheel (27.5 ") makes the bike suitable for every use. It has 21 speeds to adjust the volume according to your needs, but also to be able to climb more demanding uphills. Type: Mountain Bike Wheel Dimension: 27.5 " Brakes: V-Brakes Number of Gears: 21