Lightweight carbon construction the vitesse evo disc features a lightweight t700 hm ud carbon construction with tubesets optimised to deliver the perfect balance of power transfer and comfort we have adopted the shimano flat mount disc brake mounting standard for mounting disc brake callipers the oversized downtube features a squared profile to maximise stiffness and power transfer the huge bb386evo bottom bracket and oversized chainstays improve lateral stiffness to ensure every ounce of ene