crankbrothers Cobalt 1 StemThis solid stem is perfect for MTB use as it provides a firm hold between your steerer tube and handlebars on every ride. It features a robust 6061 aluminium construction which delivers unbeatable strength as you carve your way around the mountain. Two-Bolt MTB StemEasy to install, this version uses a two-bolt steerer clamp to lock it in place while its bolt-on faceplace provides amazing stiffness. This is the ultimate choice of upgrade for off-road riders who want a durable component for tackling the most aggressive of adventures. Features: Material: 6061 Aluminium Use: MTB Faceplate: Bolt-on Bolt: 2-bolt Rise: +/- 6 degrees Clamp Diameter: 31.8mm Steerer Diameter: 1 1/8″Buy crankbrothers Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.