FREE SHIPPING on orders of $50 or more.* Same day shipping before 3PM Pacific.
X
Questions? Call our experts!
1.800.651.4050
WBW Rewards Program
X
SHOP NEW ARRIVALS
DEAL OF THE DAY
ALL SALE ITEMS
SHOP CLOSEOUTS
GS (Medium Cage)
Click to zoom
GS (Medium Cage)
SGS (Long Cage)

Shimano
XTR RD-M9100 Rear Derailleur

Mfg PartNum:
2599
POINTS
Earn $25.99 in Rewards credit. Click to learn more.
This model is not eligible for Rewards points
In Stock Now
ea
$259.99
Please Confirm Model
This item is currently out of stock. Click Notify Me to receive an email when the item becomes available.
InstantPrice MatchWhat is this?
Qualifies for Free Shipping!

In Mountain bike riding, trail conditions change drastically from one second to the next, from one turn to the next. Mountain bikers need to be able to seamlessly Perceive the conditions, Judge their options, and Operate their bike in a split second. XTR satisfies the needs of the most demanding riders by providing the highest level of precision and integration. We refocused on the original goal of XTR - to be the ultimate race components.



Features & Specs:

  • Decreased rear derailleur tension at low gear position, to prevent high chain tension
  • Add bumper at rear derailleur pulley cage
  • Larger 13 tooth pulley wheel
  • GS (medium cage) version works with 10-45t cassettes in 1x12 setups
  • SGS (long cage) version works with 10-45t & 10-51t cassettes in 1x12 setups
  • GS (medium cage) version is 28mm shorter for increased obstacle clearance

Articles will open in new tab.

Comparing bottom bracket types and standards.
You wanna go fast? Join the ceramic revolution!
Make your upgrades count. Here's the equipment that will help you ride your bike faster.
Campagnolo vs. Shimano vs. SRAM: demystifying groupsets.
What to consider when selecting a crankset for your road bike.