The new SHIMANO 105 ST-R7170 shift/brake lever with BR-R7170 caliper features Di2 electronic shifting for the first time, bringing precise, intuitive gear changes to even more riders. Reach adjustment and customized button functions allow you to dial in your ideal ergonomics.

THE SCIENCE OF SPEED: Shimano 105 Di2 12-speed STI Dual Control ST-R7170 + BR-R7170 Disc Brake Set

The next-generation SHIMANO 105 featuring Di2 draws on the design philosophy The Science of Speed bringing fresh momentum, comfort and control. It lets you embrace an open road, full of infinite possibilities. Go deeper into your journeys. See the world in a fresh new way. And enjoy the gift of each new day.

The new SHIMANO 105 brings Di2 shifting to a new set of riders. For those who have only experienced mechanical shifting and ergonomics, SHIMANO 105 Di2 represents a transformation of the road cycling experience. With function and technologies inherited from DURA-ACE and ULTEGRA, SHIMANO 105 is the culmination of years of research and development. With a shared Di2 platform, sophisticated ergonomics, SHIMANO 105-optimized gear combinations, and an exceptional brake system, the new SHIMANO 105 marks a new era of affordable performance.

SHIMANO 105 Di2 brings a beautiful minimalist cockpit – free of wires and ports –that’s more aesthetic and aerodynamic. Meanwhile the ergonomics of the all-new dual control levers ensure superb comfort and control whatever your hand position. Something you’ll especially appreciate on longer rides when fatigue sets in. Plus the shifters have over 3 years of battery life – so no worries there!

With proven hydraulic braking technology, the new SHIMANO 105 2-piston calipers BR-R7170 feature the SHIMANO Flat Mount System and its low-profile design that is ideal for road bikes. More compact and lighter than ever, the R7170 brakes offer wide pad clearance for easy wheel removal and quiet performance as well as one-way bleeding for easy, clean maintenance.

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Features – Shimano 105 Di2 ST-R7170 + BR-R7170 12-speed hydraulic Disc Brake Set

• 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

Product features

• Use: Road
• Group: 105 Di2 R7100
• Model: ST-R7170 Set
• Type: Dual-Control (STI)
• Handlebar mounting: left / right
• Gear left: 2-speed
• 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 front 1000mm / 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): each 1
• E-tube connector (pcs): 0
• Di2 Wireless-Chip: Yes
• Battery: each CR1632 x 2

Material

• Body: CFRP
• Lever: Aluminium, painted
• Caliper: Aluminium