LTWOO EGR Rear Derailleur (RD-EG1201-M-A)

Rear Derailleur

Specifications

Manufacturer: LTWOO
Name: EGR Rear Derailleur (RD-EG1201-M-A)
Series: EGR
MPN: RD-EG1201-M-A
Rear Speeds: 10, 11, 12^[1]
Drivetrain Brand: Other
Shifting Type: Cable
Max Cog (T): 50^[2]
Mount Standard: Standard Hanger
Weight (g): 391^[1]
Sources: [1] ltwoo.com, checked 10 Aug 2026: Rear Speeds, Weight (g)
[2] ltwoo.com, checked 29 Sep 2026: Max Cog (T)

Compatibility

LTWOO EGR Rear Derailleur (RD-EG1201-M-A) is a LTWOO rear derailleur. 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.

Chains for this derailleur20

Shares a standard

SRAM

Apex Chain

Both are 12-speed

Shares a standard

Shimano

CN-HG54 DEORE MTB CHAIN 10s

Both are 10-speed

Shares a standard

Shimano

CN-HG601-11 LINKGLIDE, HG CHAIN 11s

Both are 11-speed

Shares a standard

Shimano

CN-HG701-11 LINKGLIDE, HG CHAIN 11s

Both are 11-speed

Shares a standard

Shimano

CN-HG95 HG-X CHAIN 10s

Both are 10-speed

Shares a standard

Shimano

CN-LG500 LINKGLIDE CHAIN 10/11s

Both are 11-speed

Shares a standard

Shimano

CN-M6100 HYPERGLIDE+ CHAIN 12s

Both are 12-speed

Shares a standard

Shimano

CN-M7100 HYPERGLIDE+ CHAIN 12s

Both are 12-speed

Shares a standard

Shimano

CN-M8100 HYPERGLIDE+ CHAIN 12s

Both are 12-speed

Shares a standard

Shimano

CN-M9100 HYPERGLIDE+ CHAIN 12s

Both are 12-speed

Shares a standard

KMC

DLC 10

Both are 10-speed

Shares a standard

KMC

DLC 11

Both are 11-speed

Shares a standard

KMC

DLC 12

Both are 12-speed

Shares a standard

KMC

e10

Both are 10-speed

Shares a standard

KMC

e11

Both are 11-speed

Shares a standard

KMC

e12

Both are 12-speed

Shares a standard

SRAM

Eagle 70 Transmission Flattop Chain

Both are 12-speed

Shares a standard

SRAM

Eagle S100 Chain

Both are 12-speed

Shares a standard

SRAM

Eagle S200 Chain

Both are 12-speed

Shares a standard

SRAM

Eagle S500 Chain

Both are 12-speed

Cassettes for this derailleur20

🚲Shares a standard

microSHIFT

Advent MX E-Series 10 Speed SpeedRamp Cassette

Both are 10-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

Advent MX E-Series 11 Speed SpeedRamp Cassette

Both are 11-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

Advent MX G-Series 10 Speed Alloy SpeedRamp Cassette

Both are 10-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

Advent MX G-Series 11 Speed Alloy SpeedRamp Cassette

Both are 11-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

Advent MX G-Series 11 Speed SpeedRamp Cassette, XD Driver

Both are 11-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

Advent MX H-Series 10 Speed SpeedRamp Cassette

Both are 10-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

Advent MX H-Series 11 Speed SpeedRamp Cassette

Both are 11-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

ADVENT X G-Series 10 Speed Cassette 11-48

Both are 10-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

ADVENT X H-Series 10 Speed Cassette 11-48

Both are 10-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

E-Series 10 Speed Cassette 11-42 Alloy Cog

Both are 10-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

G-Series 10 Speed Cassette 11-25

Both are 10-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

G-Series 10 Speed Cassette 11-28

Both are 10-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

G-Series 10 Speed Cassette 11-36

Both are 10-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

G-Series 11 Speed Cassette 11-25

Both are 11-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

G-Series 11 Speed Cassette 11-28

Both are 11-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

G-Series 11 Speed Cassette 11-32

Both are 11-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

G-Series 11 Speed Cassette 11-42

Both are 11-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

G-Series 11 Speed Cassette 11-46

Both are 11-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

H-Series 10 Speed Cassette 11-25

Both are 10-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

H-Series 10 Speed Cassette 11-28

Both are 10-speed
Both are microSHIFT drivetrain parts

Shifters that drive this derailleur20

Recommended

LTWOO

EGR Shift Lever (SL-EG1202-R-C)

Both are 10/11/12-speed
Both use cable actuation

Mechanically compatible

LTWOO

A7 Shift Lever (SL-A1006-R)

Both are 10-speed
Both use cable actuation

Mechanically compatible

LTWOO

A9 Shift Lever (SL-A1106-R)

Both are 11-speed
Both use cable actuation

Mechanically compatible

LTWOO

AX Shift Lever (SL-A1206-R)

Both are 12-speed
Both use cable actuation

Mechanically compatible

LTWOO

AX Shift Lever (SL-A1216-R)

Both are 12-speed
Both use cable actuation

Mechanically compatible

LTWOO

ER9 Shift Switch (SW-ERT1100-R)

Both are 10/11/12-speed
Both use cable actuation

Mechanically compatible

LTWOO

GR7 Shifter (ST-GR1009-R)

Both are 10-speed
Both use cable actuation

Mechanically compatible

LTWOO

GR9 Shifter (ST-GR1109-R)

Both are 11-speed
Both use cable actuation

Mechanically compatible

LTWOO

GRT Shifter (ST-GR1209-R)

Both are 12-speed
Both use cable actuation

Mechanically compatible

LTWOO

R7 Shifter (ST-R1006-R)

Both are 10-speed
Both use cable actuation

Mechanically compatible

LTWOO

R7 Shifter (ST-R1009-R)

Both are 10-speed
Both use cable actuation

Mechanically compatible

LTWOO

R9 Shifter (ST-R1106-R)

Both are 11-speed
Both use cable actuation

Mechanically compatible

LTWOO

R9 Shifter (ST-R1109-R)

Both are 11-speed
Both use cable actuation

Mechanically compatible

LTWOO

RX Shifter (ST-R1206-R)

Both are 12-speed
Both use cable actuation

Mechanically compatible

LTWOO

RX Shifter (ST-R1209-R)

Both are 12-speed
Both use cable actuation

Mechanically compatible

LTWOO

T7 Shift Lever (SL-T1006-R)

Both are 10-speed
Both use cable actuation

Mechanically compatible

LTWOO

T7 Shift Lever (SL-T1016-R)

Both are 10-speed
Both use cable actuation

Mechanically compatible

LTWOO

TX Shift Lever (SL-T1206-R)

Both are 12-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

Advent MX Trail Trigger Shifter 1x10 (SL-M7005-R)

Both are 10-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

Advent MX Trail Trigger Shifter 1x11 (SL-M7115-R)

Both are 11-speed
Both use cable actuation

Frequently Asked Questions

What fits LTWOO EGR Rear Derailleur (RD-EG1201-M-A)?

On this page we list chains for this derailleur, cassettes for this derailleur, shifters that drive 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.

Does LTWOO EGR Rear Derailleur (RD-EG1201-M-A) work with electronic shifting like Di2 or AXS?

No. LTWOO EGR Rear Derailleur (RD-EG1201-M-A) is mechanical, cable-actuated. Electronic groups use internal motors and proprietary signalling, so there is no mechanical or electrical path between the two.