Vision Metron Track Handlebar On Track If you have a track bike that you want to upgrade, you might want to get a new handlebar. The Vision Metron Track Handlebar is made from carbon fiber and has a track-specific geometry. It has a 365mm width for a narrow profile and a 31. 8mm clamp diameter. Features Designed for track bikes with a track-specific geometry Carbon construction for stiffness365mm width for a narrow profile SPECIFICATIONSMaterial Carbon Fiber Bar Clamp Diameter31. 8mm Width365mm Ramp Angle-Drop Sweep-Drop-Reach-Intended Use Track Weight N/A | Vision Tech | Metron Track Handlebar 31. 8Mm, 365Mm