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Side Swing, Direct Mount
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Side Swing, Direct Mount
Side Swing, E-Type Mount
Side Swing, Band Clamp

Shimano XT FD-8100 Front Derailleur

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SHIMANO DEORE XT - Front Derailleur - SIDE SWING - Clamp Band Mount - MTB 2x12-speed

The SHIMANO DEORE XT M8000 series front derailleurs deliver light action, and confidant, secure shifting for aggressive trail riding. They offer an extra-wide gear range with a front double 36-26T combination.


  • Increased traction range and no chain rub for long-travel bikes
  • One spec for 48.8 mm & 51.8 mm chain line
  • Extra wide range with front double 36-26T
  • Available in D, E, and M-type mounts
  • *M type mount requires adapter
  • Compatible with a 2.3-inch tire on wider rims
  • Proprietary design aids in reliable shifts
  • Wide frame mounting compatibility
  • Greater tire clearance
  • Greater compatibility
  • B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

    The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.

    Model Number: FD-M8100-M 

    Series: SHIMANO DEORE XT M8100 Series 

    Weight: 114 g

    Action: SIDE SWING 

    Cable Route Type: Front-Pull 

    Chainline: 48.8 (142 mm O.L.D.), 51.8 (148 mm O.L.D.) 

    Chain stay angle: 66-69 

    Compatible chain: HG 12-speed 

    Link bushings: 

    Mount Type: Clamp Band_31.8 mm(w/ M size adapter), Clamp Band_34.9 mm 

    Speeds: 2x11 

    Top gear teeth: 36-38T 

    Total Capacity: 10T 

    Side Swing, Direct Mount

    Mfg PartNum: IFDM8100D6 

    Side Swing, E-Type Mount

    Mfg PartNum: IFDM8100E6 

    Side Swing, Band Clamp

    Mfg PartNum: IFDM8100MX6 

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    *Orders received before 3:00PM Pacific time are shipped the same day (Mon-Sat). Orders over $50 are shipped free (USA only, excluding AK and HI). Some exceptions apply. See Shipping for details. 92