Retrospec Bicycles AMOK-16 Cyclocross Sixteen Speed Bike with Chromoly Frame, Matte Black/Silver, 58cm/Large The ultimate commuting machine that can conquer any terrain, rain or shine, every day of the week 16-Speed Shimano 2400 Claris drivetrain components with integrated STI shifting & braking for precision control without ever removing hands Hand-built and double-butted 4130 Chromalloy frame you can depend on day in and day out Multi-terrain Kendal Small Block 8 tires handle on or off-road duties Sealed mechanism bottom bracket and hubs keep critical bearings protected from the elements for miles of carefree riding