DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS)

Specifications

Manufacturer
Shimano
Name
DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS)
Series
M8100
MPN
RD-M8100-GS
Shifting Type
Cable
Slot consumption
All
Slots
Rear Derailleur
Weight (g)
284
Front Speeds
1
Groupset
Deore XT
Drivetrain Brand
Shimano
Rear Speeds
12

Shimano DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS)

Rear Derailleur

Loading offers…

Compatibility

This Shimano DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS) is a Shimano MTB rear derailleur. It requires a 12-speed drivetrain and compatible components. It is designed for cable shifting systems. For best performance, use with other M8100 components, though it is mechanically compatible with the parts listed below.

Compatible Shifters20

DEORE XT BRAKE LEVER I-SPEC EV CLAMP BANDRecommended

Shimano

DEORE XT BRAKE LEVER I-SPEC EV CLAMP BAND

  • Uses cable shifting type
DEORE XT SHIFT LEVER RIGHT I-SPEC EV 12sRecommended

Shimano

DEORE XT SHIFT LEVER RIGHT I-SPEC EV 12s

  • Matches required 12-speed standard
  • Uses cable shifting type
DEORE XT SHIFT LEVER RIGHT12sRecommended

Shimano

DEORE XT SHIFT LEVER RIGHT12s

  • Matches required 12-speed standard
  • Uses cable shifting type
ALFINE HYDRAULIC DISC BRAKE LEVER I-SPEC B CLAMP BANDCompatible

Shimano

ALFINE HYDRAULIC DISC BRAKE LEVER I-SPEC B CLAMP BAND

  • Uses cable shifting type
Apex Shift-Brake LeverCompatible

SRAM

Apex Shift-Brake Lever

  • Matches required 12-speed standard
  • Uses cable shifting type
ASSIST SWITCHCompatible

Shimano

ASSIST SWITCH

  • Uses cable shifting type
AX Shift Lever (SL-A1206-R)Compatible

LTWOO

AX Shift Lever (SL-A1206-R)

  • Matches required 12-speed standard
  • Uses cable shifting type
AX Shift Lever (SL-A1216-R)Compatible

LTWOO

AX Shift Lever (SL-A1216-R)

  • Matches required 12-speed standard
  • Uses cable shifting type
BRAKE LEVER I-SPEC EV CLAMP BANDCompatible

Shimano

BRAKE LEVER I-SPEC EV CLAMP BAND

  • Uses cable shifting type
BRAKE LEVER I-SPEC II CLAMP BANDCompatible

Shimano

BRAKE LEVER I-SPEC II CLAMP BAND

CUES HYDRAULIC BRAKE LEVER FOR SINGLECompatible

Shimano

CUES HYDRAULIC BRAKE LEVER FOR SINGLE

  • Uses cable shifting type
CUES HYDRAULIC DISC BRAKE LEVER I-SPEC II CLAMP BANDCompatible

Shimano

CUES HYDRAULIC DISC BRAKE LEVER I-SPEC II CLAMP BAND

  • Uses cable shifting type
CUES HYDRAULIC DUAL CONTROL LEVER FOR DOUBLECompatible

Shimano

CUES HYDRAULIC DUAL CONTROL LEVER FOR DOUBLE

  • Uses cable shifting type
DEORE BRAKE LEVER I-SPEC EVCompatible

Shimano

DEORE BRAKE LEVER I-SPEC EV

  • Uses cable shifting type
DEORE XT 3-FINGER HYDRAULIC DISC BRAKE LEVERCompatible

Shimano

DEORE XT 3-FINGER HYDRAULIC DISC BRAKE LEVER

  • Uses cable shifting type
DEORE XT BRAKE LEVERCompatible

Shimano

DEORE XT BRAKE LEVER

  • Uses cable shifting type
DROPPER SEAT POST LEVERCompatible

Shimano

DROPPER SEAT POST LEVER

  • Uses cable shifting type
DROPPER SEAT POST LEVER CLAMP BAND MOUNTCompatible

Shimano

DROPPER SEAT POST LEVER CLAMP BAND MOUNT

  • Uses cable shifting type
DROPPER SEAT POST LEVER I-SPEC EVCompatible

Shimano

DROPPER SEAT POST LEVER I-SPEC EV

  • Uses cable shifting type
Eagle 70 Transmission Shifter (SL-70-A1)Compatible

SRAM

Eagle 70 Transmission Shifter (SL-70-A1)

  • Matches required 12-speed standard
  • Uses cable shifting type

Compatible Cassettes11

DEORE XT HYPERGLIDE+ CASSETTE 12s M8100Recommended

Shimano

DEORE XT HYPERGLIDE+ CASSETTE 12s M8100

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
105 HG CASSETTE 12sCompatible

Shimano

105 HG CASSETTE 12s

  • Matches required 12-speed standard
ALFINE SINGLE SPROCKETCompatible

Shimano

ALFINE SINGLE SPROCKET

DEORE HYPERGLIDE+ CASSETTE 12sCompatible

Shimano

DEORE HYPERGLIDE+ CASSETTE 12s

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
DEORE XT HYPERGLIDE+ CASSETTE 12s M8200Compatible

Shimano

DEORE XT HYPERGLIDE+ CASSETTE 12s M8200

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
DURA-ACE HYPERGLIDE+ CASSETTE 12s Compatible

Shimano

DURA-ACE HYPERGLIDE+ CASSETTE 12s

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
SLX HYPERGLIDE+ CASSETTE 12s Compatible

Shimano

SLX HYPERGLIDE+ CASSETTE 12s

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
ULTEGRA HYPERGLIDE+ CASSETTE 12s (CS-R8100-12)Compatible

Shimano

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

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
ULTEGRA HYPERGLIDE+ CASSETTE 12s (CS-R8101-12)Compatible

Shimano

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

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
XTR HYPERGLIDE+ CASSETTE 12s M9100Compatible

Shimano

XTR HYPERGLIDE+ CASSETTE 12s M9100

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
XTR HYPERGLIDE+ CASSETTE 12s M9200Compatible

Shimano

XTR HYPERGLIDE+ CASSETTE 12s M9200

  • Matches required 12-speed standard
  • Uses shimano hg plus standard

Compatible Cranksets20

DEORE XT CRANKSET 52 MM CHAIN LINE 1X12sRecommended

Shimano

DEORE XT CRANKSET 52 MM CHAIN LINE 1X12s

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
DEORE XT CRANKSET 56.5 MM CHAIN LINE 1X12sRecommended

Shimano

DEORE XT CRANKSET 56.5 MM CHAIN LINE 1X12s

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
DEORE XT E-BIKE HOLLOWTECH CRANK ARM SET M8100Recommended

Shimano

DEORE XT E-BIKE HOLLOWTECH CRANK ARM SET M8100

  • Uses shimano hg plus standard
ALFINE CRANKSET WITH CHAIN GUARDCompatible

Shimano

ALFINE CRANKSET WITH CHAIN GUARD

Apex 1 Wide CranksetCompatible

SRAM

Apex 1 Wide Crankset

  • Matches required 12-speed standard
DEORE CRANKSET FOR 142/148 MM O.L.D. FRAMES 1X12s M6100 1xCompatible

Shimano

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

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
DEORE CRANKSET FOR 148 MM O.L.D. FRAMES 1X12sCompatible

Shimano

DEORE CRANKSET FOR 148 MM O.L.D. FRAMES 1X12s

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
DEORE CRANKSET FOR 157 MM O.L.D. FRAMES 1X12sCompatible

Shimano

DEORE CRANKSET FOR 157 MM O.L.D. FRAMES 1X12s

  • Matches required 12-speed standard
  • Uses shimano hg plus standard
DEORE XT CRANKSET 176 MM Q-FACTOR 55 MM CHAIN LINE 12sCompatible

Shimano

DEORE XT CRANKSET 176 MM Q-FACTOR 55 MM CHAIN LINE 12s

  • Matches required 12-speed standard
Eagle 70 Transmission CranksetCompatible

SRAM

Eagle 70 Transmission Crankset

  • Matches required 12-speed standard
Eagle 70 Transmission E-MTB Crank AssemblyCompatible

SRAM

Eagle 70 Transmission E-MTB Crank Assembly

Eagle 90 Transmission CranksetCompatible

SRAM

Eagle 90 Transmission Crankset

  • Matches required 12-speed standard
Eagle 90 Transmission E-MTB Crank AssemblyCompatible

SRAM

Eagle 90 Transmission E-MTB Crank Assembly

Eagle S100 Crank AssemblyCompatible

SRAM

Eagle S100 Crank Assembly

Eagle S100 CranksetCompatible

SRAM

Eagle S100 Crankset

  • Matches required 12-speed standard
Eagle S200 CranksetCompatible

SRAM

Eagle S200 Crankset

  • Matches required 12-speed standard
Eagle S200 DUB Crank AssemblyCompatible

SRAM

Eagle S200 DUB Crank Assembly

  • Matches required 12-speed standard
Eagle S500 CranksetCompatible

SRAM

Eagle S500 Crankset

  • Matches required 12-speed standard
Force 1 AXS Power MeterCompatible

SRAM

Force 1 AXS Power Meter

  • Matches required 12-speed standard
Force 1 AXS Power Meter CranksetCompatible

SRAM

Force 1 AXS Power Meter Crankset

  • Matches required 12-speed standard

Frequently Asked Questions

What fits with Shimano DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS)?

Shimano DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS) is compatible with shifters, cassettes, cranksets, chains that match its technical standards. Most importantly, it requires matching 12-speed components.

Can I use a higher or lower speed chain with Shimano DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS)?

No, Shimano DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS) requires a 12-speed chain. Chains for different speeds have different external widths and internal profiles, which will cause poor shifting or mechanical interference.

Does this Shimano DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS) work with electronic shifting like Di2 or AXS?

No, this is a mechanical cable-actuated component. Electronic systems use internal motors and proprietary signals that are physically and electrically incompatible with mechanical components.

Can I mix Shimano DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS) with Road components?

While some mechanical standards (like cassette spacing at certain speeds) may overlap, Shimano DEORE XT REAR DERAILLEUR 1X12s (RD-M8100-GS) is optimized for MTB use. Mixing with Road parts often fails due to differing pull ratios and chainlines.