LTWOO ERX Rear Derailleur (RD-ER1203-OP)

Rear Derailleur

ERX Rear Derailleur (RD-ER1203-OP)

Specifications

Manufacturer
LTWOO
Name
ERX Rear Derailleur (RD-ER1203-OP)
Series
ERX
MPN
RD-ER1203-OP
Rear Speeds
12
Drivetrain Brand
Other
Shifting Type
Wireless
Electronic Shifting Family
Ltwoo Electronic
Max Cog (T)
36
Weight (g)
295
Mount standard
Standard Hanger

Compatibility

LTWOO ERX Rear Derailleur (RD-ER1203-OP) is a LTWOO rear derailleur. It is a 12-speed component. It uses wireless 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

Apex ChainMechanically compatible

SRAM

Apex Chain

  • Both are 12-speed
CN-M6100 HYPERGLIDE+ CHAIN 12sMechanically compatible

Shimano

CN-M6100 HYPERGLIDE+ CHAIN 12s

  • Both are 12-speed
CN-M7100 HYPERGLIDE+ CHAIN 12sMechanically compatible

Shimano

CN-M7100 HYPERGLIDE+ CHAIN 12s

  • Both are 12-speed
CN-M8100 HYPERGLIDE+ CHAIN 12sMechanically compatible

Shimano

CN-M8100 HYPERGLIDE+ CHAIN 12s

  • Both are 12-speed
CN-M9100 HYPERGLIDE+ CHAIN 12sMechanically compatible

Shimano

CN-M9100 HYPERGLIDE+ CHAIN 12s

  • Both are 12-speed
Eagle 70 Transmission Flattop ChainMechanically compatible

SRAM

Eagle 70 Transmission Flattop Chain

  • Both are 12-speed
Eagle S100 ChainMechanically compatible

SRAM

Eagle S100 Chain

  • Both are 12-speed
Eagle S200 ChainMechanically compatible

SRAM

Eagle S200 Chain

  • Both are 12-speed
Eagle S500 ChainMechanically compatible

SRAM

Eagle S500 Chain

  • Both are 12-speed
Force Chain (CN-FRC-D1)Mechanically compatible

SRAM

Force Chain (CN-FRC-D1)

  • Both are 12-speed
Force Chain (CN-FRC-E1)Mechanically compatible

SRAM

Force Chain (CN-FRC-E1)

  • Both are 12-speed
GX Eagle ChainMechanically compatible

SRAM

GX Eagle Chain

  • Both are 12-speed
GX Eagle Transmission Flattop ChainMechanically compatible

SRAM

GX Eagle Transmission Flattop Chain

  • Both are 12-speed
K-FORCE LIGHT MTB 12 SPEED CHAINMechanically compatible

FSA

K-FORCE LIGHT MTB 12 SPEED CHAIN

  • Both are 12-speed
NX Eagle ChainMechanically compatible

SRAM

NX Eagle Chain

  • Both are 12-speed
RED ChainMechanically compatible

SRAM

RED Chain

  • Both are 12-speed
Rival Chain (CN-RIV-D1)Mechanically compatible

SRAM

Rival Chain (CN-RIV-D1)

  • Both are 12-speed
Rival Chain (CN-RIV-E1)Mechanically compatible

SRAM

Rival Chain (CN-RIV-E1)

  • Both are 12-speed
X0 Eagle Transmission Flattop ChainMechanically compatible

SRAM

X0 Eagle Transmission Flattop Chain

  • Both are 12-speed
X01 Eagle ChainMechanically compatible

SRAM

X01 Eagle Chain

  • Both are 12-speed

Frequently Asked Questions

What fits LTWOO ERX Rear Derailleur (RD-ER1203-OP)?

On this page we list chains 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.

Can I use a higher or lower speed chain with LTWOO ERX Rear Derailleur (RD-ER1203-OP)?

No. LTWOO ERX Rear Derailleur (RD-ER1203-OP) 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.