For sale, a complete Shimano Ultegra Di2 11-speed electronic groupset, rim brake version. Ideal for upgrading a road bike or replacing a groupset after a frame change. The groupset has been used for a few seasons, but its mechanical and electronic performance is absolutely perfect. The derailleurs react instantly and the battery maintains excellent battery life (it lasts for more than 6 months with several rides per week). The ultra-complete set includes…