The Barracuda Rock Mountain Bike is an adaptable all-terrain bike ideal for entry-level and accomplished riders alike. This hardtail mountain bike from Barracuda is a quality model ideal for cross country and trail riding.Designed to build confidence when taking on the rough stuff, the popular Rock model combines excellent components including reliable 21-speed Microtech gears, double disc brakes, 100mm suspension forks and chunky mtb tyres. All this creates an efficient, faster and smoother ride on trails and climbs. Brake Detail: Cable Disk Brakes. Frame Size (in inch): 18. Tyre Size (in inch): 28. Alloy 17.5 mtb frame who's geometry is quick and responsive. 27.5 larger wheels with mtb tyres provide better rolling and grip over all terrain. 21 speed gears to select the one that's right for you. Double mechanical disc brakes front & rear provide serious stopping power. Padded sports saddle for comfort on and off the trails. Supplied 85% built some home assembly required. Shifters 21 Speed EZ fire shifters. Rear Derailleur 21 Speed Shimano Altus. Brakes Tektro mechanical disc brakes. 27.5 Alloy rims and hubs. Tyres 28 x 2.10 Kenda MTB style.