RD-M21SS / SSA / SSB

RD-M21SS

Rear Derailleur for 1 x 6 / 7 Speed

Direct Attachment Type

Super Short Cage

  • Max. Sprockets:  32T
  • Total Capacity:  21T

RD-M21SSA

Rear Derailleur for 1 x 6 / 7 Speed

Reverse Bracket Type

Super Short Cage

  • Max. Sprockets:  32T
  • Total Capacity: 21T

RD-M21SSB

Rear Derailleur for 1 x 6 / 7 Speed

Bracket Type

Super Short Cage

  • Max. Sprockets:  32T
  • Total Capacity: 21T

Technical Specifications

Model No.RD-M21SSRD-M21SSARD-M21SSB
Cassette Compatibility6 / 7 Speed6 / 7 Speed6 / 7 Speed
Cage TypeSuper Short CageSuper Short CageSuper Short Cage
Front ChainringSingle Single Single
Max. Sprocket32T32T32T
Min. Sprocket11T11T11T
Total Capacity21T21T21T
Guide PulleyEngineering Composite with Steel BushingEngineering Composite with Steel BushingEngineering Composite with Steel Bushing
Tension PulleyEngineering Composite with Steel BushingEngineering Composite with Steel BushingEngineering Composite with Steel Bushing
Bracket BodyResin / BlackResin / BlackResin / Black
Mount TypeDirect AttachmentReverse Bracket TypeBracket Type
Bracket Pivot SealNNN
Plate BodyResin / BlackResin / BlackResin / Black
Plate Pivot SealNNN
Outer LinkResin SteelResin SteelResin Steel
Inner LinkBlack SteelBlack SteelBlack Steel
Link Pin BushingNNN
Outer PlateBlack Painted SteelBlack Painted SteelBlack Painted Steel
Inner PlateBlack Painted SteelBlack Painted SteelBlack Painted Steel
Weight241g241g241g
CompatibilityShimano 6 / 7 Speed Rear Derailleur CompatibleShimano 6 / 7 Speed Rear Derailleur CompatibleShimano 6 / 7 Speed Rear Derailleur Compatible

Instructions

Instructions Manual

Installation Manual

MTB Rear Derailleur Installation Manual for RD-M21

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