Vision Metron 4D Flat MAS Bar (J-Bend) A performance-focused bar for the rampant racer, this Vision system is designed to get you to the podium with speed and style. Compatible with Shimano Di2 shifting systems, this carbon-constructed bar and extension setup is ergonomically shaped for the most aerodynamic positioning possible. The main bar features a 10-degree bend for superior climbing control, with comfortably flared drops allowing you to get your head down with ease. Streamlined and Speedy, Carbon-made Aero BarThis flat-design bar also matches the natural curve of your arms and is shaped to make your breathing easier by opening up your chest and lungs as your run gets more and more intense. The MAS (Modular Aero System) J-Bend extensions are perfect for achieving streamlined superiority and come equipped with soft, padded armrests to keep you comfortable and composed as your pace progresses. This superb setup by Vision is made with powerful and pacy podium chasers in mind. Features:Material: CarbonExtensions: J-BendBar Clamp Diameter: 31.8mmForward Bend: 10°Compatibility: Shimano Di2 shifting systemsIncludes: Garmin computer mountWeight: 733gBuy Vision Components from Chain Reaction Cycles, the World's Largest Online Bike Store.