Shimano XT RD-M8100 Rear Derailleur - Fast and Precise Shifting
The Shimano XT RD-M8100 rear derailleur features 13-tooth pulleys and a rubber damper, delivering a smooth and comfortable shifting experience while enhancing chain grip under various conditions. Designed for precise gear changes across a wide transmission range, it’s the perfect choice for riders using a 1x12 system with a 10-51 cassette. Experience the reliability and efficiency of the RD-M8100 for optimal performance on your rides.

SPECIFICATIONS

Series: Deore XT M8100
Application: Enduro, All Mountain, Cross Country
Gearing: 12-speed
Mount: standard
Capacity: 41 teeth
Compatibility: Shimano MTB 12-speed
Compatibility - Chains: HG 12-speed

Technical Information:
Derailleur Pulleys: 13 tooth
Outer Cage Material: aluminium
Inner Cage Material: aluminium
Other Materials: aluminium, stainless steel, steel, composite (GFRP)

Features:
- only 1x and only compatible with 10-51 t
- fast and precise shifting performance optimised for each trail
- fast, recoil free shifting
- lower rear derailleur and chain tension in small gears
- new bump stopper
- larger derailleur pulleys
- stable drivetrain on rough terrain
- low profiled with Shadow RD+
- painted cage plates
- 4 joint bushings, fluorine-coated
- derailleur pulley bearings sealed

Technology:
Shadow RD+
Less distraction, quiet drivetrain. Rear derailleur stabilizer, reduces chain slap. Simple solution for chain drop. Lighter and more efficient than roller type chain device.

Models:
long:
- Cage Length: SGS
- Largest Sprocket Teeth (max.): 51 teeth
- Largest Sprocket Teeth (min.): 51 teeth
- Smallest Sprocket Teeth (max.): 10 teeth
- Smallest Sprocket Teeth (min.): 10 teeth
- Chainring Difference (max.): 0 teeth
- Total Capacity: 41 teeth
- Manufacturer Part Number: I-RDM8100SGS

Contents:
- 1 x Shimano XT RD-M8100 Shadow+ rear derailleur

WEIGHT 284g

FAQ

What are the max low and min top sprocket for the Shimano XT 12 speed rear derailleur?
The Shimano XT 12 speed rear derailleur has a max low sprocket of 51T and a min top sprocket of 10T.

What chain is compatible with the Shimano XT 12 speed rear derailleur?
The Shimano XT 12 speed rear derailleur is compatible with chain HG 12 speed.

Do I have to use a Shimano XT 12 speed cassette and chain with the Shimano XT 12 speed rear derailleur?
No, the Shimano XT 12 speed rear derailleur is compatible with other Shimano 12 speed cassettes and chains.

Shimano XT RD-M8100 12-speed Rear Derailleur SGS