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105 ST-R7170 Di2 Shift/Hydraulic Brake Lever - 12-Speed

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Current price: $204.25 Original price: $284.99
28% off



Why We Like The Shimano 105 ST-R7170 Di2 Shift/Hydraulic Brake Lever

Shimano's new 105 ST-R7170 Di2 Shift/Hydraulic Brake lever gets us up to speed with Shimano's time-tested Di2 system, in a more wallet-friendly package. The 105 Di2 lever utilizes the ergonomics and aerodynamics of the Dura-Ace shifter to encourage a comfortable hand position and slice through the wind. Wireless Di2 technology gives us reliable and lightning-fast shifting for when things get hairy in the paceline. As an added bonus, we no longer have to run around looking for a charging cable since the lever operates off of long-lasting coin batteries.


  • Wireless Di2 left/front shift/brake lever for use with hydraulic brakes
  • Aerodynamic and ergonomic hood design decreases hand fatigue
  • Powered by two easy-to-find CR1632 coin batteries
  • 16.4mm reach adjust lets us dial in our perfect hand position
  • Light on the front of the lever allows for quick battery level checks
  • Item #SHIU1H9
Crankset Compatibility
2x12 speed
Compatible Components
105 Di2 R7100 series, [brake caliper] BR-R7170, [brake hose kit] SM-BH90-J-SSR, SM-BH90-JK-SSR
Claimed Weight
7.5oz (212g)
shift/brake lever
Manufacturer Warranty
2 years
Manufacturer Part Number
road cycling, gravel, cyclocross, commuting