105 R7100 Di2 12 Speed Road Bike Groupset Size:172.5mm Crankset rounded edges at the spindle

rounded edges at the spindle

more durable

tube TechBELT 700x32C 330g 60tpi

Short-travel shifting which saves energy and focus by quickly adapting to ever-changing conditions with a button press instead of many manual shifts

105 R7100 Di2 12 Speed Road Bike Groupset Size:172.5mm Crankset rounded edges at the spindleThe new Shimano 105 Di2 brings electronic gearing to a more entry level market making it more affordable. Get huge benefits with smoother gear shifting, gear ratios made for all round riding, no more brake rub, and more. Shimano has refined many aspects of their groupsets over the years. Every new generation solves a wide range of issues from the previous generation. Shimano 105 Debut. The new Shimano 105 brings Di2 shifting to a new set of riders.