Challenge Torrent 26 Inch Mountain Bike - Mens. Black steel frame. 18 gears with Twist grip shifters. Sunrun SL-KDSG-03 gears. Sunrun RD-HG-04. Front V-type and rear V-type brakes. Dual suspension. Weight fully assembled 18kg. 45.7cm / 18 inch frame size. 66cm / 26 inch wheel size. Suitable for 82 to 95cm (32 to 37 inch) inside leg measurements. Suitable for ages 15 years and over. Additional features: Bell. Sunrun RD-HG-04 rear derailleur. General information: Some assembly required. Additional Information SIZING GUIDE. Check your inside leg measurement to find the correct frame size to suit your needs. (Inside leg is measured from the crotch to the ground - not trouser length).