The Ritchey WCS Trail Stem was first designed for longer travel mountain bikes and wider bars. It uses a 220-degree clamp that fits a wider variety of riser bar bends and still packs a dramatic increase in stiffness and strength over competitor's designs.3D Forged 2014 alloy, provides superior strength while remaining lightweightExtra-wide bar clamp for increased stiffness; fits most riser bars, and ensures plenty of confident control out on the trailItem SpecificationsBar Clamp Diameter (mm)31.8ColorBlatteDefined ColorBlackLength80MaterialAluminumS.H.I.S. Stem Clamp Diameter28.6Stem Angle (deg)0Weight115 Ritchey WCS Trail Stem Stems UPC: 796941317177