Perfect your mountain bike cockpit with the PRO Koryak Stem. Designed to be paired with the PRO Koryak 3Five Riser Handlebars, it is compatible with all 31.8 millimeter clamping diameter handlebars an d is available in four lengths. FEATURES: Helps Create the Perfect Mountain Bike Fit Designed for use with the PRO Koryak Handlebar Range Robust Construction Available in Four Lengths FEATURES: Construction: AL6061 Alloy Clamping Diameter: 31.8mm Angle: 0 Degrees Stack Height: 40mm Steerer Diameter: 28.6mm Weight: from 150g