Mon-Sat 8am-5pm PT
Bike Tires Direct logo. Link to homepage.
Serving cyclists
since 2002


Product Images

Shimano Deore RD-M6100 12-Speed Rear Derailleur
Click Here for Larger Image

Shimano Deore RD-M6100 12-Speed Rear Derailleur


Pricing and Order Section

Mfg PartNum: IRDM6100SGS
MSRP: $56.99
That's off
In Stock
Ships Free!
Earn $3.42 in VIP credit. Click to Learn More.
This color/size is not eligible for VIP points
Price matches are is not eligible for VIP points


Shimano Deore RD-M6100 12-Speed Rear Derailleur

The all-new Shimano Deore RD-M6100 12-Speed Rear Derailleur deliver advanced shifting performance with decreased tension in the low gear position. Larger 13T pulleys increase efficiency and chain management while compatibility with SHIMANO's new 12-speed cassettes boosts range.


  • 1x12-speed SHIMANO SHADOW RD+ rear derailleur
  • Fast and precise shifting for modern mountain biking
  • Silent drivetrain in all gear positions
  • Decreased rear derailleur and chain tension in low gear
  • Bigger 13T pulley
  • Stable drivetrain in rough terrain
  • Low-profile design avoids damage from rocks
  • Chain stabilizer reduces chain drop, slap and noise

  • 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.


    Mfg PartNum: IRDM6100SGS 

    Actuation: Mechanical 

    Discipline: MTB 

    Mount Type: Standard Rear Hanger 

    Speed: 12 


    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Reviewed 7/31/2023
    by cycle4jesus
    Competitive Racer
    Value Rating
    Overall Rating
    Hard to beat!

    Excellent value, it shifts just like it should. Clutch could be better - when engaged there is more friction in the drivetrain. Was considering an XT, but this was less than half the price. And with the possibility of mangling another derailleur, I'd rather lose a $45 one and carry the extra few grams (or lose a few more from my gut).

    Was this review useful to you? Yes/No
    Thank you for your feedback.
    additional content loading
    additional content loading
    additional content loading

    We are committed to delivering outstanding value and service to our customers, every day.
    Try us today to see why so many of our customers come back again and again.

    *Orders received before 3:00PM Pacific time are shipped the same day (Mon-Fri). Orders over $50
    are shipped free (USA only, excluding AK and HI). Some exceptions apply. See Shipping for details. 1

    5741 NE 87th Ave (I-205 exit 23B) Portland, OR 97220 | 800-682-0570 | [email protected]