Shimano XT FD-M8020 / FD-M8025 2-/11-speed Front Derailleur - black/E-Type / side-swing / front-pull

Shimano XT FD-M8020 / FD-M8025 2-/11-speed Front Derailleur

Item number: 43942
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The Shimano XT front derailleurs FD-M8025 and FD-M8020 - from classic to innovative


The Shimano XT front derailleurs FD-M8020 and FD-M8025 shift two chainrings in the 11-speed Mountain bike drivetrain and contribute significantly to the DynaSys11 performance. The FD-M8025 is a model with classic cable routing (dual-pull or down-pull) and conventional construction (down-swing or top-swing), while the FD-M8020 features innovative side-swing technology and the associated front-pull routing. These provide a higher shifting force and even more tyre clearance. Mounting options include clamp mounts, direct mount and E-type for both models.

Specifications:

Series:
Deore XT M8000
Application:
Cross Country, All Mountain
Gearing:
2x (in combination with 11-speed)
Chainstay Angle:
66-69°
Chainline:
48.8 mm
Chainring Size (max.):
34-38 teeth
Capacity:
10-tooth
Cable Routing:
front-pull, top-pull, down-pull, dual-pull
Movement:
side-swing, down-swing, top-swing
Mount:
high clamp, low 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-X11 chains

* FD-M8020: Frames must be made for E-type mounts, retrofitting an E-type retaining plate is not possible.

Technical Information:

Outer Body Material:
aluminium, steel (only FD-M8025-E, FD-M8025-L)
Inner Body Material:
Aluminium
Cage Material:
steel

Compatibility:

Shifter:
SL-M9000, SL-M8000, SL-M7000, SL-M5100
Crank:
FC-M9000-2, FC-M9020-2, FC-M9020-B2*, FC-M8000-2, FC-M8000-B2*, FC-M7000-2, FC-M7000-B2*, FC-M5100-2, FC-M5100-B2*, FC-MT700-2, FC-MT700-B2*, FC-MT600-2, FC-MT600-B2*
Chain:
CN-HG901-11, CN-HG701-11, CN-HG601-11, CN-LG500

* direct Mount and E-Type only

Features:

  • increased stability, manoeuvrability and shifting efficiency
  • more tyre clearance for large wheels
  • compatible with shorter chainstays
  • efficient cable routing for easy gear changes
  • versatile specifications, compatible with traditional mounting options
  • 50 % higher shifting force (outward, compared to previous XT, only FD-M8020)
  • increased traction range for long travel and active rear suspension (FD-M8020 only)
  • 2, 6 or 8 joint bushings depending on version
  • painted parallelogram, plated cage plates

Technology:

Dyna-Sys11
Dyna-Sys11 is the name of the 11-speed shifting system for MTBs from Shimano. The focus lies on maintaining the pedalling rhythm both on flat ground and on uphill segments. The gear ratios are selected so that you make efficient progress in the most frequently used gear range and do not have to shift gears as much (" Rhythm Step" ).

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:

high clamp / down-swing / top-pull:
I-FDM8025HTX6
high clamp / down-swing / dual-pull:
I-FDM8025HX6
low clamp / top-swing / down-pull:
I-FDM8025LX6
high clamp / side-swing / front-pull:
I-FDM8020HX6
low clamp / side-swing / front-pull:
I-FDM8020LX6
direct mount / down-swing / top-pull:
I-FDM8025DT6
direct mount / down-swing / dual-pull:
I-FDM8025D6
direct mount / side-swing / front-pull:
I-FDM8020D6
E-type / top-swing / down-pull:
I-FDM8025ED6X
E-type / side-swing / front-pull:
I-FDM8020E6X

Contents:

  • 1 x Shimano XT FD-M8020/FD-M8025 front derailleur
  • 1 x 28.6 mm adapter (only clamp model)
  • 1 x 31.8 mm adapter (only clamp model)


Weight:

  • black/low clamp / top-swing / down-pull: 131 g
  • black/high clamp / down-swing / dual-pull: 149 g
  • black/high clamp / side-swing / front-pull: 145 g
  • black/direct mount / down-swing / dual-pull: 139 g
  • black/direct mount / down-swing / top-pull: 139 g
  • black/direct mount / side-swing / front-pull: 134 g
  • black/E-Type / side-swing / front-pull: 120 g
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.85 / 5.00

Models:

  • black/low clamp / top-swing / down-pull, in stock
    47.60€
  • black/high clamp / down-swing / dual-pull, in stock
    47.60€
  • black/high clamp / side-swing / front-pull, in stock
    40.67€
  • black/direct mount / down-swing / dual-pull, in stock
    40.67€
  • black/direct mount / down-swing / top-pull, in stock
    47.60€
  • black/direct mount / side-swing / front-pull, sold out
    40.67€
  • black/E-Type / side-swing / front-pull, in stock
    40.67€

Customer Reviews (6)

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Customer Reviews (6)

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Give us your opinion on this product.

by Lorenzo Z. on 13.11.2020
1 of 1 customers found this review helpful.

In combination with the XT chainrings of the same series, the shifts are as good ans as fast as with the rear derailleur --which is not necessarily surprising, since MTB chainrings are now significantly smaller than what you find in a cassette...

But what I really want to write here is: maybe I am discovering hot water, but this derailleur (and therefore all its sister products above and below) work flawlessly with the last generation of Shimano STIs (2x front), without adapters or any hackery. It's plug and play. So no needof Di2 or AXS or other very expensive componentry to run a MTB crankset and front derailleur with STIs, if you want to do a gravel build with a frame that does not accept road cranks. Or you simply want the small chainrings.

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