Rear derailleurs
microSHIFT R10 Rear Derailleur 10 Speed Medium Cage
RD-R51M-BK
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
Retailer offers
Where to Buy
Compare verified retailer affiliate links or search Amazon. We may earn a commission from qualifying purchases. Please confirm the exact variant before purchasing.
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 1, 2026
- Compatibility review
- Reviewed Aug 1, 2026
Approved technical sources
- microSHIFT RD-R51M-BK official labeled model factsManufacturerSource checked Aug 1, 2026Evidence reviewed Aug 1, 2026
- microSHIFT centos-rd-manual mount evidenceManufacturerSource checked Aug 1, 2026Evidence reviewed Aug 1, 2026
Technical data
Specifications
- Speeds
- 10-speed
- Supported speeds
- 10-speed
- Maximum cassette cog
- 34T
- Drivetrain family
- microSHIFT R10 / Shimano Road legacy mechanical 10-speed
- Compatible drivetrain families
- microSHIFT R10 / Shimano Road legacy mechanical 10-speed
- Frame mounting
- Conventional hanger
- Total capacity
- 39T