Shimano 105 Di2 Rear Derailleur Shadow RD-R7150 12-speed

Shimano 105 Di2 RD-R9150 Rear Derailleur - High-tech centre with shadow designThe RD-R7150 Di2 is the first electronic rear derailleur from the Shimano 105 series. Due to its generous total capacity of 41 teeth, you can shift 12-speed cassettes with a larg