Shimano 105 Di2 ST-R7170 / BR-R7170 Hydraulic Disc Shift Lever — Right/Rear, 12-Speed, 1700mm J-Kit, Road Bike

Shimano 105 Di2 ST-R7170 with BR-R7170 is a pre-bled right/rear electronic shift and hydraulic disc brake unit for 12-speed road and all-road bikes. Lever, caliper and hose arrive joined and filled at the factory.

105 Di2 electronic shifting with hydraulic power. Genuine Shimano, brand new.

Will it fit? This is the right lever / rear brake with a 1700 mm hose, supplied as a pre-filled J-kit (lever, flat-mount caliper and hose). For Shimano 12-speed Di2 road systems (105 R7100 Di2). The right lever controls the rear derailleur. Not included: the disc rotor, and no 25 mm flat-mount adapter, so check what your frame requires. If you are building both ends, the left/front half is a separate part.

Key Specifications

Technology Highlights

• ✓ Pre-bled J-kit. Lever, hose and caliper arrive joined and factory-filled, so fitting does not start with a bleed kit.
• ✓ Semi-wireless Di2. The shift signal travels wirelessly to the derailleur, so there is no wire to route through bar, stem and headset.
• ✓ Hydraulic disc braking. Powerful, consistent stopping in all conditions.
• ✓ Coin cell power. Two CR1632 cells included, rated by Shimano for several years of shifting.
• ✓ Reach adjust. Lever blade position is adjustable for smaller hands.

What's in the Box

• 1 x Shimano 105 Di2 ST-R7170 right shift/brake lever
• 1 x BR-R7170 flat-mount caliper (L03A resin pads, finned backplate)
• Pre-connected 1700 mm hydraulic hose (pre-bled)
• 2 x CR1632 batteries, mounting hardware and Shimano documentation
• Not included: disc rotor, and no 25 mm flat-mount adapter