Shimano XT FD-M8100 2-/12-speed Front Derailleur

The XT FD-M8100 front derailleur by Shimano - a versatile companion

The Shimano XT FD-M8100 is a side-swing derailleur designed specifically for the XT 26/36 tooth cranks. It can be mounted in a variety of ways (high direct mount, low direct mount, clamp) and ensures more tyre clearance. Front derailleur FD-M8100 is compatible with both a 48.8 mm chainline and a 51.8 mm chainline 3 mm further out.

Specifications:

Series:

Deore XT M8100

Application:

Enduro, All Mountain, Cross Country

Gearing:

2x (combined w/ 12-speed)

Chainstay Angle:

66-69°

Chainline:

48.8 mm / 51.8 mm

Chainring Size (max.):

36 - 38 teeth

Capacity:

10-tooth

Cable Routing:

front pull

Movement:

Side-Swing

Mount:

mid clamp, E-Type* (bottom bracket mount, low-direct), direct mount (high-direct)

Clamp Diameter:

34.9 mm w/ adapter 31.8 mm / 28.6 mm

Compatibility:

HG 12-speed chains

Frames must be made for E-type mounts, retrofitting an E-type retaining plate is not possible.

Technical Information:

Outer Body Material:

Aluminium

Inner Body Material:

Aluminium

Cage Material:

steel

Compatibility:

MTB 2x12-speed:

Shifter:

SL-M9100, SL-M8100, SL-M7100

Crank:

• 142 mm over locknut dimension: FC-M9100-2, FC-M8100-2, FC-M7100-2, FC-MT610-2
• 148 mm over locknut dimension: FC-M9120-B2, FC-M8120-B2, FC-M7120-B2, FC-MT610-B2

Chain:

CN-M9100, CN-M8100, CN-M7100, CN-M6100

Tyre Width:

up to 2.3"

Features:

• for an aggressive, flowing ride even on rough, uneven terrain
• increased traction range and no chain collision even with bikes with a lot of travel
• extra wide area with 26-36 teeth in front
• various frame mounting options
• more tyre clearance
• only one front derailleur for 48.8 and 51.8 mm chainlines
• 6 joint bushings
• painted parallelogram, plated cage plates

Technology:

Side-Swing
The Shimano Side-Swing front derailleurs are controlled from the front (Front-Pull), which allows for much more efficient cable routing. This significantly improves shifting performance, especially when shifting to the large chainring - with lower operating forces. Other advantages include increased tyre clearance thanks to the slimmed-down design and noise reduction thanks to the optimised chainstay angle. In addition, Side-Swing technology favours the construction of frames with shorter chainstays, which simplify the control of the bike.

Manufacturer Numbers:

mid clamp / side-swing / front-pull:

I-FDM8100MX6

direct mount / side-swing / front-pull:

I-FDM8100D6

E-type / side-swing / front-pull:

I-FDM8100E6

Contents:

• 1 x Shimano XT FD-M8100 front derailleur
• 1 x 28.6 mm adapter (only clamp model)
• 1 x 31.8 mm adapter (only clamp model)