SHIMANO Ultegra Di2 R8170 2x12 Complete Groupset recovery This enabled high-precision and efficient

This enabled high-precision and efficient testing of over 50 fabric types in 135 different configurations

41 kg* (3 lb

Simple upgrade path to dual-sided via RS-UP

Important Information:

SHIMANO Ultegra Di2 R8170 2x12 Complete Groupset recovery This enabled high-precision and efficientShimano Ultegra Di2 R8170, 2x12 Speed Electronic Groupset Shimano Ultegra R8170 represents the Science of Speed, engineered to deliver a faster, more precise, and more intuitive ride. Every detail has been optimized to elevate the road cycling experience, reconnecting riders with the essence of performance, rhythm, and freedom. Hybrid Semi Wireless Di2 Platform Wireless shifters for a clean cockpit Wired derailleurs and central battery for maximum