Shifters
Shimano ST-R8170-R
ST-R8170-R · ISTR8170RF
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
Retailer offers
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Technical data
Specifications
- Speeds
- 12-speed
- Compatible drivetrain families
- Shimano Di2 MTB/gravel 1x12, Shimano Di2 gravel 2x12, Shimano Di2 road 2x12
- Shift actuation
- Electronic
- Electronic shift system
- Shimano DI2 SD300
- Compatible electronic shift systems
- Shimano DI2 DN320, Shimano DI2 SD300
- Electronic connection
- Hybrid
- Control style
- Drop Bar Integrated
- Brake control interface
- Hydraulic Mineral Oil
- Compatible brake hoses
- Sm-Bh90-Jk-Ssr
- Included control sides
- Right
- Right control functions
- Brake, Rear Shift
Catalog trust
Evidence and freshness
Technical-source dates and retailer offer checks are separate. A retailer check does not validate compatibility.
Report a correction- Technical review
- Aug 18, 2026
- Compatibility review
- Reviewed Aug 18, 2026
Approved technical sources
- ISTR8170RF exact current Shimano sale package
- set.shimano.co.jp/bc_catalog/road.pdfManufacturerSource checked Aug 18, 2026Evidence reviewed Aug 18, 2026
- ST-R8170-R Shimano Di2 system compatibility
- productinfo.shimano.com/en/compatibility/C-473ManufacturerSource checked Aug 18, 2026Evidence reviewed Aug 18, 2026
- ST-R8170-R official Shimano specifications
- productinfo.shimano.com/en/spec/road-di2-spec-shiftbrake-lever-hydraulic-disc-brakeManufacturerSource checked Aug 18, 2026Evidence reviewed Aug 18, 2026