Shimano XTR M9100 12 Speed Rear Derailleur

Shimano XTR M9100 12 Speed Rear Derailleur
7 reviews
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Maximum Capacity
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Largest cassette sprocket
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From 203,26 70,19 discount
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  • Delivery in 3-4 working days
  • Free tracked delivery to Portugal

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Specifications

Specifications

Brand
Shimano
Number of gears
12 speed
Shifting Type
Mechanical
Weight
243 grams
Colour
Black
What groupset do you have?
Shimano XTR

Description

Description

As the title says, the Shimano XTR M9100 rear derailleur can be used with both 11 and 12 speeds. This has been made possible thanks to the adjustable acceleration range. The Shimano XTR M9100 rear derailleur is nicely aligned under the cassette to prevent impact or damage from the outside. The XTR M9100 rear derailleur also features the latest generation of clutch, so you don't have to deal with a rattling chain over obstacles or rough descents.

Technology

• Shadow RD+: Retains a tight chain line
• Derailleur wheels: 13T increased for less friction
• Weight: 237 g

Configuration:
• RD-M9100-SGS : 1X12, 2X12 (10-51 cassette)
• RD-M9100-SGS: 1X12, 2X12 (10-45 cassette)
• RD-M9100-SGS: 1X11, 2X11 (10-45 cassette)
• RD-M9100-GS: 1X12, 2X12 (10-45 cassette)
• RD-M9100-GS: 1X11, 2X11 (10-45 cassette)

Assembly

Loosen and tighten the gear cable.
To loosen and tighten the bolt with which the gear cable is attached to the derailleur, you need a 5 mm Allen key. You can find these here.

Removing the chain.
Before you can remove the derailleur, you will also have to remove the chain. How to do this, you can read here. You need a chain tool for that. We have these here. Make sure you buy one of the right brand and the right number of speed.

Use assembly grease for mounting.
If you are going to mount the new rear derailleur, it is best to apply some mounting paste to the threads of the derailleur hanger. You can buy this aseembly grease here.

Assembling jockey wheels.
To mount jockey wheels you need an Allen key of 2.5mm or 3mm. A handy Allen key can be found here

User tips

Skew derailleur hanger?
A problem that crops up often is a skew derailleur hanger. It can happen if the derailleur knocked into something, for example in the case of a fall on the bike. Luckily it can be fixed!

Clean the jockey wheels well too!
Just like the chain, the jockey wheels on a derailleur get super dirty. As a result the shifting is not as good and it does the lifespan of your derailleur no good. For that reason, it's a good idea to clean the jockey wheels at the same time when you clean and lube your chain. Do this by running a cloth along the jockey wheel while gently turning the chain. Of course it gets to a point where the jockey wheels are worn out. In this blog post you can find out more about when jockey wheels should be replaced and what you'll need.

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Reviews

Reviews

4.9 / 5
Average from 7 reviews
5
5 reviews
4
1 review
3
0 reviews
2
0 reviews
1
0 reviews

Most recent reviews

5 / 5

I always opt for Shimano XTR

- Sjef 12 December 2023

Only recently fitted and cycled 2x. Super experience, nothing more and nothing less. I use this XTR M9100 12 speed derailleur in combination with the XTR M9100 12 speed shifter. On the 11 speed XT casette 11-42 teeth. Super compatible with the new 11speed and 12speed set. Order was fast, delivery less so, but that will have been due to the Saint Nicholas rush.

Pros & Cons

Easy to install
Light weight
Switches quickly
Automatic translation

5 / 5

Super recommended!

- Simone 8 November 2022

Top of the line product! It is like clockwork and does not fail a shift!

Pros & Cons

Accuracy
Design
Lightness
Automatic translation

5 / 5

robust and precise

- Patrick 5 November 2022

Xtr three that make you dream

Pros & Cons

Gear shifting
Light, smooth, precise and straightforward
Automatic translation

5 / 5

Very positive experience from order to delivery everything perfect and respected

- Alfonso 30 September 2022

Shimano XTR rear derailleur a guarantee

Pros & Cons

Fairness
Seriousness
Speed
I didn't find any
Automatic translation

5 / 5

Very interesting site for pedal-powered two-wheelers like me

- Daniele 11 April 2022

Super competitive prices and extensive product catalogue

Pros & Cons

Ease of searching for spare parts
Price
Shipping speed
Automatic translation

5

Sjef, 12 December 2023

I always opt for Shimano XTR

Only recently fitted and cycled 2x. Super experience, nothing more and nothing less. I use this XTR M9100 12 speed derailleur in combination with the XTR M9100 12 speed shifter. On the 11 speed XT casette 11-42 teeth. Super compatible with the new 11speed and 12speed set. Order was fast, delivery less so, but that will have been due to the Saint Nicholas rush.

  • Easy to install
  • Light weight
  • Switches quickly
Automatic translation

5

Simone, 8 November 2022

Super recommended!

Top of the line product! It is like clockwork and does not fail a shift!

  • Accuracy
  • Design
  • Lightness
Automatic translation

5

Patrick, 5 November 2022

robust and precise

Xtr three that make you dream

  • Gear shifting
  • Light, smooth, precise and straightforward
Automatic translation

5

Alfonso, 30 September 2022

Very positive experience from order to delivery everything perfect and respected

Shimano XTR rear derailleur a guarantee

  • Fairness
  • Seriousness
  • Speed
  • I didn't find any
Automatic translation

5

Daniele, 11 April 2022

Very interesting site for pedal-powered two-wheelers like me

Super competitive prices and extensive product catalogue

  • Ease of searching for spare parts
  • Price
  • Shipping speed
Automatic translation


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7 reviews 9 reviews 12 reviews 142 reviews
Number of gears 12 speed 12 speed 12 speed 12 speed
Shifting Type Mechanical Mechanical Mechanical Mechanical
Cage Length Medium Cage / Long Cage Long Cage Long Cage Long Cage
Maximum Capacity 35T / 41T
Weight 243 grams 276 grams 264 grams 290 grams
Largest cassette sprocket 45T / 51T 50T / 52T 50T / 52T 50T / 52T
From 203,26 From 188,06 253,12 101,60
This product View product View product View product