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4.5 (123)

XTR RD-M9100 Rear Derailleur

Name: Thunder Mountain Bikes XTR RD-M9100 Rear Derailleur - XTR RD-M9100 Rear Derailleur
Brand: Thunder Mountain Bikes
SKU: 42417426596075
Price: 277.2 USD
Availability: InStock
Rating: 5 (3 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$277.20$330.00

16% off

Quantity

Color

Black

Quantity

Description

The XTR M9100 derailleur brings a new level of drivetrain silence thanks to decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility w...

Reviews

5.0

3 ratings

Awesome

Upgraded this with new xtr shifter from XT that came on the bike. Shifting is very crisp and effortless.

Christopher · October 27, 2025

Fast perfect

Vinicios · March 13, 2023

You ACTUALLY had one!

I am a no-nonsense consumer. I know what I need and what I want to pay. You had the exact product that I needed and when I selected expedited shipping, you delivered. I ordered on a Monday and received the product that Thursday two days before my Son's race. Great work. Will use you again.

Jason · October 10, 2022