... EN standard 3.3k,12k or ud 4.OEM light weight 100% carbon fiber custom bicycle handlebars with 220g Features:1 ... carbon fibers, such as high stiffness, high tensile strength, low weight, high chemical resistance, high temperature tolerance and low thermal expansion ... , military, and motorsports, along with other competition sports. light weight 100% carbon fiber custom bicycle handlebars with 220g