Rear derailleurs
Shimano RD-R8150
RD-R8150 · IRDR8150F
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
Retailer offers
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Technical data
Specifications
- Speeds
- 12-speed
- Maximum cassette cog
- 34T
- Supported front chainrings
- 1, 2
- Maximum front difference
- 16T
- Drivetrain family
- Shimano Di2 road 2x12
- Shift actuation
- Electronic
- Electronic shift system
- Shimano DI2 SD300
- Compatible electronic shift systems
- Shimano DI2 SD300
- Electronic connection
- Hybrid
- Frame mounting
- Conventional hanger
- Total capacity
- 39T
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
- IRDR8150F exact current Shimano sale package
- set.shimano.co.jp/bc_catalog/road.pdfManufacturerSource checked Aug 18, 2026Evidence reviewed Aug 18, 2026
- RD-R8150 Shimano Di2 system compatibility
- productinfo.shimano.com/en/compatibility/C-473ManufacturerSource checked Aug 18, 2026Evidence reviewed Aug 18, 2026
- RD-R8150 official Shimano specifications
- productinfo.shimano.com/en/spec/road-di2-spec-rear-derailleurManufacturerSource checked Aug 18, 2026Evidence reviewed Aug 18, 2026