M21 rear derailleurs are designed to work with 6- and 7-speed Shimano road and mountain shifters. Enjoy the wide variety of bikes you can get going again with M21 rear derailleurs.
- Model No.: RD-M21L
- Cassette Compatibility: 6 / 7 Speed
- Cage Type: Long Cage
- Front Chainring: Double / Triple
- Max. Sprocket: 32T
- Min. Sprocket: 11T
- Total Capacity: 43T
- Guide Pulley: Engineering Composite with Steel Bushing
- Tension Pulley: Engineering Composite with Steel Bushing
- Bracket Body: Resin / Black
- Mount Type: Direct Attachment
- Plate Body: Resin / Black
- Outer Link: Resin Steel
- Inner Link: Black Steel
- Outer Plate: Black Painted Steel
- Inner Plate: Black Painted Steel
- Weight: 279g
- Compatibility: Shimano 6 / 7 Speed MTB Rear Derailleur Compatible
