- 28
- 7, 6
- 37T
- 28-30T
Specifications
As listed in the manufacturer's catalog.
General
- Speed
- 7-Speed, 6-Speed
- Cage Length
- Short Cage
- Max Cog
- 28-30T
- Min Cog
- 13-14T
- Capacity
- 37T
- Clutch
- No
- Cage Material
- Steel
- Outer Link Material
- Composite
- Compatibility
- Shimano Mountain
How spec sheets write it
The most common ways bicycle spec sheets name it, by number of mentions.
-
microSHIFT M21S
-
MicroShift M21S 7 speed
-
Microshift RD-M21S
Bicycles
Published bicycles that use it, newest model years first.
