The durable Hyper Detonate mountain bike rides smoothly on or off the road, so you can take it in all directions for exercise and adventure. It comes with 21 speed gears to help you find your own pace uphill or downhill. A front disc brake and rear V-Brake gives great stopping power so all you need to concentrate on is enjoying the ride! Gents 26 inch ATB bike, 21 speed Revo shift, front suspension, front disc. Shimano rear gear and RS35 shifter. Alloy frame. 18 gears. Revoshift shifters. Shimano SL-RS35 gears. Shimano TZ-50 rear derailleur. Front disc and rear V-type brakes. Front suspension. Steel forks. Weight fully assembled 14.5kg. 18 inch frame size. 26 inch wheel size. 30 to 33 inch inside leg measurements. Mountain bike style tyres. Alloy rims. Self-assembly. Tyres and tubes are excluded from the guarantee.