There are two types of personal trainers in the worlddrill sergeants & cheerleaders. The Roll Elite is the latter kind in bicycle form. With its lightweight alloy frame & fork; eight speeds of get out there & go fast gearing; stable wide tires; & powerful mechanical disc brakes the Roll does everything in its power to encourage motivate & inspire you to get out & keep fit in comfortable efficient style. Climb efficiently & with less effort thanks to the Rolls lightweight A1 Premium Aluminium frame. Added versatility comes care of rack & fender mounts. Enjoy more power transfer & steer with confident control courtesy of the rigid A1 Premium Aluminium fork. The durable aluminium wheel accommodates a wider tire for extra stability & shock absorption. Wide diameter Specialized Nimbus Sport 650bx 2.3" tires with Black Belt protection provide excellent traction stability & cushioning which creates a safer more reliable & comfortable ride on paved or dirt roads. Ride in comfort for mile-after-mile thanks to the Body Geometry saddle which cups the sit bones & a suspension seat post that soaks up the bumps. Technical Specifications FRAME Specialized A1 Premium Aluminum Ground Control Positioning formed tubes disc mount fender/rack mounts FORK A1 Premium Aluminium Cr-Mo steerer post disc mount fender/rack mounts STEM Specialized Flow Set integrated 3D forged alloy 4-bolt 20-degree rise HANDLEBARS Specialized Roll 6061 alloy 15-degree backsweep 5-degree upsweep 125mm rise 31.8mm GRIPS Specialized Body Geometry Contour lock-on FRONT BRAKE Tektro mechanical disc resin pads 160mm rotor REAR BRAKE Tektro mechanical disc resin pads 160mm rotor BRAKE LEVERS Shimano V-brake FRONT DERAILLEUR Shimano FD-M191 top swing dual pull REAR DERAILLEUR Shimano Altus 8-speed SHIFT LEVERS Shimano Altus EZ Fire Plus 8-speed CASSETTE Shimano 8-speed 11-32t CHAIN KMC X8 8-speed w/ reusable Missing Link CRANKSET Forged alloy 48/38/28T w/ chainguard BOTTOM BRACKET Square taper cartridge bearings PEDALS Nylon body rubber top w/ reflectors RIMS Specialized Roll double-wall 33mm inner width disc FRONT HUB Specialized Hi Lo disc QR 32h REAR HUB Specialized Hi Lo disc QR 32h SPOKES Stainless 14g FRONT TYRE Specialized Nimbus Sport 60TPI Black Belt protection 650bx 2.3"REAR TYRE Specialized Nimbus Sport 60TPI Black Belt protection 650bx 2.3"INNER TUBES Standard Schrader valve SADDLE Body Geometry The Cup 6-degree rise elastomer base steel rails SWAT compatible mounts 255mm SEATPOST Suspension Plus 2-bolt 27.2mm SEAT BINDER Alloy nylon/glass fibre washer QR 34.9mm