Vision Metron 4D ML side panels and underarm gusset

side panels and underarm gusset for ease of movement and breathability during high tempo riding

unfortunately

one inch base fits wrench or bench vise

Such is the case with its new Ultegra SM-BB72-41B PressFit Bottom Bracket design

Vision Metron 4D ML side panels and underarm gussetContinuous carbon composite construction Aero Ergo flat top riser central section follows the natural arc of the arms with a 10 degree forward bend for more ergonomic climbing position and easier breathing Cable groove compatible with new Di2 systems w larger internal cable tunnel Reinforced and textured lever and stem clamping areas Bar width: center center from the handlebar tails Attributes Drop 125mm Stem Clamp Diameter 31. 8mm Outward Bend 2