microSHIFT R9 Rear Derailleur 9 Speed Short Cage (RD-R42S)

Rear Derailleur

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Specifications

Manufacturer
microSHIFT
Name
R9 Rear Derailleur 9 Speed Short Cage (RD-R42S)
Series
R9
MPN
RD-R42S
Rear Speeds
9
Drivetrain Brand
Other
Shifting Type
Cable
Max Cog (T)
25
Cage Length
Short

Compatibility

microSHIFT R9 Rear Derailleur 9 Speed Short Cage (RD-R42S) is a microSHIFT rear derailleur. It is a 9-speed component. It uses Cable shifting. Everything listed below was matched on a specification we hold for both parts: the interface each pairing actually depends on, such as freehub body, speed count, actuation or mounting standard. Where we could not verify that interface, the part is left out rather than assumed to fit.

Shifters that drive this derailleur20

🚲Recommended

microSHIFT

Bar End Shifters - 2/3x9

  • Both are 9-speed
  • Both use cable actuation
🚲Recommended

microSHIFT

R9 Drop Bar Shifters 1x9 (SB-R490)

  • Both are 9-speed
  • Both use cable actuation
🚲Recommended

microSHIFT

R9 Drop Bar Shifters 2x9 (SB-R492-BK)

  • Both are 9-speed
  • Both use cable actuation
🚲Recommended

microSHIFT

R9 Drop Bar Shifters 3x9 (SB-R493-BK)

  • Both are 9-speed
  • Both use cable actuation
🚲Recommended

microSHIFT

R9 Xpress Shifters 2x9 (SL-R859-2)

  • Both are 9-speed
  • Both use cable actuation
🚲Recommended

microSHIFT

R9 Xpress Shifters 2x9 Indicator (SL-R769-2)

  • Both are 9-speed
  • Both use cable actuation
🚲Recommended

microSHIFT

R9 Xpress Shifters 3x9 Indicator (SL-R769-3)

  • Both are 9-speed
  • Both use cable actuation
🚲Recommended

microSHIFT

Thumb Shifters 2/3x9 (SL-T09-SV)

  • Both are 9-speed
  • Both use cable actuation
🚲Mechanically compatible

microSHIFT

ADVENT Drop Bar Shifters 1x9 (SB-M090)

  • Both are 9-speed
  • Both use cable actuation
🚲Mechanically compatible

microSHIFT

ADVENT Quick Trigger Pro Shifter 1x9 (SL-M6195-R)

  • Both are 9-speed
  • Both use cable actuation
🚲Mechanically compatible

microSHIFT

ADVENT Quick Trigger Pro Shifter 1x9 Indicator (SL-M6295-R)

  • Both are 9-speed
  • Both use cable actuation
🚲Mechanically compatible

microSHIFT

ADVENT Quick Trigger Shifter 1x9 (SL-M6190-R)

  • Both are 9-speed
  • Both use cable actuation
🚲Mechanically compatible

microSHIFT

ADVENT Quick Trigger Shifter 1x9 Indicator (SL-M6290-R)

  • Both are 9-speed
  • Both use cable actuation
🚲Mechanically compatible

microSHIFT

ADVENT Thumb Shifter 1x9 (SL-M19-R)

  • Both are 9-speed
  • Both use cable actuation
🚲Mechanically compatible

microSHIFT

ADVENT Trail Trigger Pro Shifter 1x9 (SL-M9295-R)

  • Both are 9-speed
  • Both use cable actuation
🚲Mechanically compatible

microSHIFT

ADVENT Trail Trigger Pro Shifter 1x9 Single Click (SL-M9295-ER)

  • Both are 9-speed
  • Both use cable actuation
🚲Mechanically compatible

microSHIFT

ADVENT Trail Trigger Shifter 1x9 (SL-M9195-R)

  • Both are 9-speed
  • Both use cable actuation
🚲Mechanically compatible

microSHIFT

ADVENT Xpress Plus Shifter 1x9 (SL-M8195-R)

  • Both are 9-speed
  • Both use cable actuation
🚲Mechanically compatible

microSHIFT

ADVENT Xpress Shifter 1x9 (SL-M819-R)

  • Both are 9-speed
  • Both use cable actuation
🚲Mechanically compatible

microSHIFT

Bar End Shifter - ADVENT 1x9

  • Both are 9-speed
  • Both use cable actuation

Frequently Asked Questions

What fits microSHIFT R9 Rear Derailleur 9 Speed Short Cage (RD-R42S)?

On this page we list chains for this derailleur, shifters that drive this derailleur, cassettes for this derailleur. Each listing was matched on a specification we hold for both parts; anything we could not verify is omitted rather than assumed to fit.

Can I use a higher or lower speed chain with microSHIFT R9 Rear Derailleur 9 Speed Short Cage (RD-R42S)?

No. microSHIFT R9 Rear Derailleur 9 Speed Short Cage (RD-R42S) is a 9-speed component and needs a 9-speed chain. Chains for different speed counts have different external widths and inner-plate profiles, which causes poor shifting or interference with the neighbouring sprockets.

Does microSHIFT R9 Rear Derailleur 9 Speed Short Cage (RD-R42S) work with electronic shifting like Di2 or AXS?

No. microSHIFT R9 Rear Derailleur 9 Speed Short Cage (RD-R42S) is mechanical, cable-actuated. Electronic groups use internal motors and proprietary signalling, so there is no mechanical or electrical path between the two.