The profile svet zoro aerobase bar is designed to cut through the wind composed of multi direction multi layer carbon fibre its torsionally stiff with a good degree of comfort featuring 31 wing section means this bar is uci legal ergonomic straight brake extensions allow a comfortable hand position pre slotted internal cable routing is neat and the bar is di2 compatible now available in zero degree drop version for easier reach clamp is oversize at 318 mm di2 compatible