Shimano DEORE REAR DERAILLEUR 1X12s

Rear Derailleur

DEORE REAR DERAILLEUR 1X12s

Specifications

Manufacturer
Shimano
Name
DEORE REAR DERAILLEUR 1X12s
Series
M6100
MPN
RD-M6100-SGS
Groupset
Deore
Rear Speeds
12
Drivetrain Brand
Shimano
Shifting Type
Cable[1]
Max Cog (T)
51[2]
Cage Length
Long
Compatible Chain Standards
Shimano HG (Hyperglide), Shimano HG+ (Hyperglide+, 12s)
Weight (g)
319
Sources
  1. [1] AI-extracted, not yet checked against a named source (added 10 Feb 2026): Shifting Type
  2. [2] bike.shimano.com, checked 29 Sep 2026: Max Cog (T)

Compatibility

Shimano DEORE REAR DERAILLEUR 1X12s is a Shimano rear derailleur. It is a 12-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.

Deore M6100 Groupset8

A groupset is designed and tested as one system, so these are the most reliable match. Other compatible parts are listed below.

DEORE BRAKE LEVER LEFT I-SPEC EVRecommended

Shimano

DEORE BRAKE LEVER LEFT I-SPEC EV

  • Ships in the Deore M6100 Groupset
DEORE BRAKE LEVER RIGHT I-SPEC EVRecommended

Shimano

DEORE BRAKE LEVER RIGHT I-SPEC EV

  • Ships in the Deore M6100 Groupset
DEORE SHIFT LEVER RIGHT CLAMP BAND 12sRecommended

Shimano

DEORE SHIFT LEVER RIGHT CLAMP BAND 12s

  • Ships in the Deore M6100 Groupset
DEORE CRANKSET FOR 142/148 MM O.L.D. FRAMES 1X12s M6100 1xRecommended

Shimano

DEORE CRANKSET FOR 142/148 MM O.L.D. FRAMES 1X12s M6100 1x

  • Ships in the Deore M6100 Groupset
DEORE HYPERGLIDE+ CASSETTE 12sRecommended

Shimano

DEORE HYPERGLIDE+ CASSETTE 12s

  • Ships in the Deore M6100 Groupset
CN-M7100 HYPERGLIDE+ CHAIN 12sRecommended

Shimano

CN-M7100 HYPERGLIDE+ CHAIN 12s

  • Ships in the Deore M6100 Groupset
DEORE 2-PISTON BRAKE CALIPER (BR-M6100)Recommended

Shimano

DEORE 2-PISTON BRAKE CALIPER (BR-M6100)

  • Ships in the Deore M6100 Groupset
CENTER LOCK DISC BRAKE ROTOR (SM-RT64)Recommended

Shimano

CENTER LOCK DISC BRAKE ROTOR (SM-RT64)

  • Ships in the Deore M6100 Groupset

Cassettes for this derailleur13

DEORE HYPERGLIDE+ CASSETTE 12sRecommended

Shimano

DEORE HYPERGLIDE+ CASSETTE 12s

  • Both are 12-speed
  • Both are Shimano drivetrain parts
105 HG CASSETTE 12sShares a standard

Shimano

105 HG CASSETTE 12s

  • Both are 12-speed
  • Both are Shimano drivetrain parts
DEORE HYPERGLIDE+ CASSETTE 12sShares a standard

Shimano

DEORE HYPERGLIDE+ CASSETTE 12s

  • Both are 12-speed
  • Both are Shimano drivetrain parts
DEORE HYPERGLIDE+ CASSETTE 12sShares a standard

Shimano

DEORE HYPERGLIDE+ CASSETTE 12s

  • Both are 12-speed
  • Both are Shimano drivetrain parts
DEORE XT HYPERGLIDE+ CASSETTE 12s M8100Shares a standard

Shimano

DEORE XT HYPERGLIDE+ CASSETTE 12s M8100

  • Both are 12-speed
  • Both are Shimano drivetrain parts
DEORE XT HYPERGLIDE+ CASSETTE 12s M8200Shares a standard

Shimano

DEORE XT HYPERGLIDE+ CASSETTE 12s M8200

  • Both are 12-speed
  • Both are Shimano drivetrain parts
DURA-ACE HYPERGLIDE+ CASSETTE 12s Shares a standard

Shimano

DURA-ACE HYPERGLIDE+ CASSETTE 12s

  • Both are 12-speed
  • Both are Shimano drivetrain parts
HG CASSETTE 12sShares a standard

Shimano

HG CASSETTE 12s

  • Both are 12-speed
  • Both are Shimano drivetrain parts
SLX HYPERGLIDE+ CASSETTE 12s Shares a standard

Shimano

SLX HYPERGLIDE+ CASSETTE 12s

  • Both are 12-speed
  • Both are Shimano drivetrain parts
ULTEGRA HYPERGLIDE+ CASSETTE 12s (CS-R8100-12)Shares a standard

Shimano

ULTEGRA HYPERGLIDE+ CASSETTE 12s (CS-R8100-12)

  • Both are 12-speed
  • Both are Shimano drivetrain parts
ULTEGRA HYPERGLIDE+ CASSETTE 12s (CS-R8101-12)Shares a standard

Shimano

ULTEGRA HYPERGLIDE+ CASSETTE 12s (CS-R8101-12)

  • Both are 12-speed
  • Both are Shimano drivetrain parts
XTR HYPERGLIDE+ CASSETTE 12s M9100Shares a standard

Shimano

XTR HYPERGLIDE+ CASSETTE 12s M9100

  • Both are 12-speed
  • Both are Shimano drivetrain parts
XTR HYPERGLIDE+ CASSETTE 12s M9200Shares a standard

Shimano

XTR HYPERGLIDE+ CASSETTE 12s M9200

  • Both are 12-speed
  • Both are Shimano drivetrain parts

Shifters that drive this derailleur18

DEORE SHIFT LEVER RIGHT CLAMP BAND 12sRecommended

Shimano

DEORE SHIFT LEVER RIGHT CLAMP BAND 12s

  • Both are 12-speed
  • Both use cable actuation
DEORE SHIFT LEVER RIGHT I-SPEC EV 12sRecommended

Shimano

DEORE SHIFT LEVER RIGHT I-SPEC EV 12s

  • Both are 12-speed
  • Both use cable actuation
DEORE XT SHIFT LEVER RIGHT I-SPEC EV 12sMechanically compatible

Shimano

DEORE XT SHIFT LEVER RIGHT I-SPEC EV 12s

  • Both are 12-speed
  • Both use cable actuation
DEORE XT SHIFT LEVER RIGHT12sMechanically compatible

Shimano

DEORE XT SHIFT LEVER RIGHT12s

  • Both are 12-speed
  • Both use cable actuation
SATELLITE SHIFTER DROPSMechanically compatible

Shimano

SATELLITE SHIFTER DROPS

  • Both are 12-speed
  • Both use cable actuation
SATELLITE SHIFTER TOPSMechanically compatible

Shimano

SATELLITE SHIFTER TOPS

  • Both are 12-speed
  • Both use cable actuation
SLX SHIFT LEVER RIGHT 12sMechanically compatible

Shimano

SLX SHIFT LEVER RIGHT 12s

  • Both are 12-speed
  • Both use cable actuation
SLX SHIFT LEVER RIGHT I-SPEC EV 12sMechanically compatible

Shimano

SLX SHIFT LEVER RIGHT I-SPEC EV 12s

  • Both are 12-speed
  • Both use cable actuation
XTR SHIFT LEVER RIGHT 12sMechanically compatible

Shimano

XTR SHIFT LEVER RIGHT 12s

  • Both are 12-speed
  • Both use cable actuation
XTR SHIFT LEVER RIGHT I-SPEC EV 12sMechanically compatible

Shimano

XTR SHIFT LEVER RIGHT I-SPEC EV 12s

  • Both are 12-speed
  • Both use cable actuation
DEORE SHIFTER CLAMP BAND 12sShares a standard

Shimano

DEORE SHIFTER CLAMP BAND 12s

  • Both are 12-speed
  • Both are Shimano drivetrain parts
DEORE SHIFTER CLAMP BAND 12s SINGLE SHIFTShares a standard

Shimano

DEORE SHIFTER CLAMP BAND 12s SINGLE SHIFT

  • Both are 12-speed
  • Both are Shimano drivetrain parts
DEORE SHIFTER I-SPEC EV 12sShares a standard

Shimano

DEORE SHIFTER I-SPEC EV 12s

  • Both are 12-speed
  • Both are Shimano drivetrain parts
DEORE SHIFTER I-SPEC EV 12s SINGLE SHIFTShares a standard

Shimano

DEORE SHIFTER I-SPEC EV 12s SINGLE SHIFT

  • Both are 12-speed
  • Both are Shimano drivetrain parts
DEORE XT SHIFTER CLAMP BAND 12sShares a standard

Shimano

DEORE XT SHIFTER CLAMP BAND 12s

  • Both are 12-speed
  • Both are Shimano drivetrain parts
DEORE XT SHIFTER CLAMP BAND 12s SINGLE SHIFTShares a standard

Shimano

DEORE XT SHIFTER CLAMP BAND 12s SINGLE SHIFT

  • Both are 12-speed
  • Both are Shimano drivetrain parts
DEORE XT SHIFTER I-SPEC EV 12sShares a standard

Shimano

DEORE XT SHIFTER I-SPEC EV 12s

  • Both are 12-speed
  • Both are Shimano drivetrain parts
DEORE XT SHIFTER I-SPEC EV 12s SINGLE SHIFTShares a standard

Shimano

DEORE XT SHIFTER I-SPEC EV 12s SINGLE SHIFT

  • Both are 12-speed
  • Both are Shimano drivetrain parts

Frequently Asked Questions

What fits Shimano DEORE REAR DERAILLEUR 1X12s?

On this page we list cassettes for this derailleur, shifters that drive this derailleur, chains 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 Shimano DEORE REAR DERAILLEUR 1X12s?

No. Shimano DEORE REAR DERAILLEUR 1X12s is a 12-speed component and needs a 12-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 Shimano DEORE REAR DERAILLEUR 1X12s work with electronic shifting like Di2 or AXS?

No. Shimano DEORE REAR DERAILLEUR 1X12s is mechanical, cable-actuated. Electronic groups use internal motors and proprietary signalling, so there is no mechanical or electrical path between the two.