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Compound: Metal
Take one look at the all-new P-Series
ensuring riders can maintain maximum speed with minimal effort
embarking on a leisurely bike ride
Shimano Ultegra ST-R8150 Di2 Shift/Rim Brake Lever Set 2x12-Speed Shimano Ultegra Di2 12 Speed Compound: MetalThe ST R8150 electronic shift brake levers 2x12 speed brake mechanically. It scores with fast gear changes that are defined and intuitive thanks to the Shimano index shifting system. Cables are routed from the STIs first to a junction box and then to the battery, which in turn is connected to the rear derailleur and front derailleur. You can also connect the STIs to each other and run a cable from the right shifter to the battery. The ergonomics of
