LTWOO R3 Rear Derailleur (RD-R0800-M)

Rear Derailleur

Specifications

Manufacturer: LTWOO
Name: R3 Rear Derailleur (RD-R0800-M)
Series: R3
MPN: RD-R0800-M
Rear Speeds: 8
Drivetrain Brand: Other
Shifting Type: Cable
Max Cog (T): 32^[1]
Chain Standard: Shimano HG (Hyperglide)
Mount Standard: Standard Hanger
Weight (g): 225^[2]
Sources: [1] ltwoo.com, checked 29 Sep 2026: Max Cog (T)
[2] ltwoo.com, checked 10 Aug 2026: Weight (g)

Compatibility

LTWOO R3 Rear Derailleur (RD-R0800-M) is a LTWOO rear derailleur. It is an 8-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.

R3 Groupset7

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

Recommended

LTWOO

R3 Shifter (ST-R0806-2L)

Ships in the R3 Groupset

Recommended

LTWOO

R3 Shifter (ST-R0806-R)

Ships in the R3 Groupset

Recommended

LTWOO

R3 Front Derailleur (FD-R0801-DT)

Ships in the R3 Groupset

Recommended

LTWOO

Brake Caliper (BR-R03B-140R)

Ships in the R3 Groupset

Recommended

LTWOO

Brake Caliper (BR-R06B-140F)

Ships in the R3 Groupset

Recommended

LTWOO

Brake Rotor (RT-R00-140)

Ships in the R3 Groupset

Recommended

LTWOO

Brake Rotor (RT-R00-160)

Ships in the R3 Groupset

Chains for this derailleur8

Shares a standard

Shimano

CN-HG40 HG CHAIN 6, 7, 8s

Both are 8-speed

Shares a standard

KMC

Both are 8-speed

Shares a standard

SRAM

PC-830 chain

Both are 8-speed

Shares a standard

SRAM

PC-850 Chain

Both are 8-speed

Shares a standard

SRAM

PC-870 Chain

Both are 8-speed

Shares a standard

KMC

Both are 8-speed

Shares a standard

KMC

Z8.1

Both are 8-speed

Shares a standard

KMC

Z8.3

Both are 8-speed

Cassettes for this derailleur5

🚲Shares a standard

microSHIFT

H-Series 8 Speed Cassette 11-28

Both are 8-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

H-Series 8 Speed Cassette 11-32

Both are 8-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

H-Series 8 Speed Cassette 12-25

Both are 8-speed
Both are microSHIFT drivetrain parts

🚲Shares a standard

microSHIFT

H-Series 8 Speed Cassette 12-32

Both are 8-speed
Both are microSHIFT drivetrain parts

Shares a standard

FSA

K-FORCE WE12S

Both are FSA drivetrain parts
The cassette's 32T largest cog is within the derailleur's 32T maximum

Shifters that drive this derailleur20

Recommended

LTWOO

R3 Shifter (ST-R0806-R)

Both are 8-speed
Both use cable actuation

Mechanically compatible

LTWOO

A3 Shift Lever (SL-A0806-R)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

Acolyte Quick Trigger Pro Shifter 1x8 (SL-M6185-R)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

Acolyte Quick Trigger Pro Shifter 1x8 Indicator (SL-M6285-R)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

Acolyte Quick Trigger Shifter 1x8 (SL-M6180-R)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

Acolyte Quick Trigger Shifter 1x8 Indicator (SL-M6280-R)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

Acolyte Xpress Shifter 1x8 Indicator (SL-M7180-R)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

ADVENT Xpress Shifter 1x8 Indicator (SL-M718-R)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

Bar End Shifters - 2/3x8

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

Downtube Shifters 2/3x8 (SL-D08)

Both are 8-speed
Both use cable actuation

Shares a standard

LTWOO

ER9 Shifter (ST-ERT1101-R)

Both use cable actuation
Both are LTWOO drivetrain parts

🚲Shares a standard

microSHIFT

Estes Thumb Tap Right Shifter 8 Speed Indicator (TS200-8R)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

R8 Drop Bar Shifter 2x8 (SB-R482)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

R8 Drop Bar Shifters 1x8 (SB-R480)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

R8 Drop Bar Shifters 3x8 (SB-R483)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

R8 Xpress 2x8 Indicator (SL-R758-2)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

R8 Xpress 3x8 Indicator (SL-R758-3)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

Thumb Shifters 2/3x8 (SL-T08)

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

Thumb Tap Shifters 2x8 - TS38

Both are 8-speed
Both use cable actuation

🚲Shares a standard

microSHIFT

Thumb Tap Shifters 2x8 - TS39

Both are 8-speed
Both use cable actuation

Frequently Asked Questions

What fits LTWOO R3 Rear Derailleur (RD-R0800-M)?

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.

Can I use a higher or lower speed chain with LTWOO R3 Rear Derailleur (RD-R0800-M)?

No. LTWOO R3 Rear Derailleur (RD-R0800-M) is an 8-speed component and needs an 8-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 LTWOO R3 Rear Derailleur (RD-R0800-M) work with electronic shifting like Di2 or AXS?

No. LTWOO R3 Rear Derailleur (RD-R0800-M) is mechanical, cable-actuated. Electronic groups use internal motors and proprietary signalling, so there is no mechanical or electrical path between the two.