Shimano 105 ST-R7170 Di2 Double Hydraulic Disc STI Flat Left Mount Calliper Grade Of Product:NEW plus two separate microphones per

plus two separate microphones per earbud for perfect call quality

FTP Zone Workouts (Z1-Z7)

Durable and easy to clean

a wider width can be selected

CUES range of components for mid-grade riding styles offers simplified compatibility

Shimano 105 ST-R7170 Di2 Double Hydraulic Disc STI Flat Left Mount Calliper Grade Of Product:NEW plus two separate microphones perThe Shimano ST R7170 105 Di2 is a great value 105 wireless hydraulic disc brake Di2 combined brake and gear lever. It delivers excellent control, modulation, and braking power with minimal effort across all riding conditions. Wireless connectivity to the front and rear derailleurs enables effortless and trouble free gear shifting. With Di2 technology, shifting is precise and intuitive, requiring only a light touch to instantly select the correct gear.