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 &34;get out there & go fast&34; gearing stable wide 650b tyres & 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. Wide diameter 650bx 2.3&34; Nimbus Sport tires provide excellent traction stability & cushioning which creates a safer more reliable & more comfortable ride on either paved or dirt roads. Equipped with our Body Geometry The Cup saddle you can expect a supreme level of comfort anywhere you take the Roll. It delivers on these expectations by &34;cupping&34; your sit bones which reduces pressure without feeling obtrusive or constraining.A spring suspension seatpost takes the sting out of rough terrain giving you an extra bit of &34;cushion&34; thatll have you riding longer & more comfortably. Technical Specifications FRAME Specialized A1 Premium Aluminum Ground Control Positioning formed tubes disc mount fender/rack mounts FORK A1 Premium Aluminum Cr-Mo steerer post disc mount fender/rack mounts FRONT HUB Specialized disc double-sealed loose ball bearings 9mm QRREAR HUB Specialized disc loose ball bearings for Shimano 8-/9-speed cassettes QRSPOKES Stainless 14g RIMS Specialized Roll double-wall disc FRONT TYRE Nimbus Sport Reflective 650bx 2.3&34; 60TPI w/ Black Belt Protection REAR TYRE Nimbus Sport Reflective 650bx 2.3&34; 60TPI w/ Black Belt Protection CRANKSET Stout forged alloy CHAINRINGS 48/38/28T w/chainguard BOTTOM BRACKET BSA square taper cartridge bearings SHIFT LEVERS Shimano Altus EZ Fire Plus 8-speed FRONT DERAILLEUR Shimano Tourney top swing 31.8mm band clamp REAR DERAILLEUR Shimano Altus SGS cage CASSETTE Sunrace 8-speed 11-34t CHAIN KMC X8 8-speed w/reusable Missing Link FRONT BRAKE Tektro mechanical disc resin pads 160mm rotor REAR BRAKE Tektro mechanical disc resin pads 160mm rotor HANDLEBARS Specialized Roll 6061 alloy 15-degree backsweep 5-degree upsweep 125mm rise 31.8mm GRIPS Specialized Body Geometry Contour lock-on STEM Specialized Flowset 3D-forged alloy 20-degree rise 31.8mm clamp SADDLE Body Geometry The Cup 6-degree rise elastomer base steel rails SWAT compatible mounts 245mm SEATPOST Suspension Plus 2-bolt clamp 27.2mm SEAT BINDER Alloy QR 31.8mm PEDALS Specialized City platform