Shimano 105 Di2 ST-R7170 + BR-R7170 12-speed hydraulic Disc Brake
Clean cockpit: Wireless connection enhances the aesthetic of your bike while keeping shifting lightning fast
Longer lasting. Uses two CR1632 batteries (battery life: 3.5 to 4 years)
Compact, ergonomic performance cascaded from DURA-ACE
Raised hood peak improves ergonomics, while a longer hood body increases hand support
Easily change button function with the E-TUBE app
Find your optimum lever position with simple reach adjust
10% wider pad clearance decreases the chance of disc brake rotor rub
Maintenance-friendly bleeding process
Handlebar mounting: right
Gear rear: 12-speed
Optical gear display: No
Lever reach adjust: Yes
Handlebar diameter: 23.8mm/24.2mm
Brake-type: Hydraulic Disc Brake
Brake caliper: BR-R7170
Brake mounting: Flat-Mount
Brake pads: L05A-RF Resin with Fin
Brake hose: SM-BH90-JK-SSR rear 1700mm (shortable)
One-Way bleeding: Yes
Brake fluid: Mineral oil
Recommended brake rotor: SM-RT70, SM-RT64 (140mm/160mm)
Brake lever funnel bleeding: Yes
Brake lever hose joint: Straight
Compatible electric wire: EW-SD300
E-tube Project: Yes
E-tube port (pcs): 1
E-tube connector (pcs): 0
Di2 Wireless-Chip: Yes
Battery: CR1632 x 2
