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Shimano XTR M9100 12 Speed Rear Derailleur

Now $299.99 $349.99

FREE shipping within Australia over $99.00
Buy online only


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The Shimano XTR M9100 group was developed to meet the demands of mountainbike racers at the highest level and guarantees "second to none" performance. The range offers the most versatile components for XC, Enduro and Marathon races.

It all started with the search for the ultimate MTB racing components and now the XTR continues 27 years of innovation with even more speed, focus and control. It is jam-packed with the technological advantages needed to push the boundaries of today's insanely demanding courses. It is lighter, smoother, more durable and versatile to transfer all pedal-pounding watts into ground speed with extreme efficiency.

The Shimano XTR RD-M9100 rear derailleur features an elegant yet aggressive angled design and attractively anodized aluminium surfaces. Large guide and tension pulleys with 13 instead of 11 teeth provide improved shifting performance. These contribute to the improvement of chain stabilization as well as the Shadow RD+ design with friction dampers.

In the small gears, a lower preload ensures that excessive chain tension is avoided. An additional stop on the rocker arm ensures a low-noise drive. The XTR 9100 rear derailleur's medium version features 28 mm more ground clearance than the long version. Unlike the RD-M9120 rear derailleur, the RD-M9100 is designed to work optimally with the XTR 1-speed drivetrain.

Optimized for new drive system

10-45T (12-speed)

10-45T (11-speed)

Decreased rear derailleur tension at low gear position, to prevent high chain tension at low gear

Add bumper at rear derailleur pulley cage for silent drive

Bigger 13T pulley

28 mm better ground clearance (vs. RD-M9100-SGS)

Enhance shifting performance

Low sprocket combination

Silent drivetrain

Low profile design

For more aggressive riding


Material: Aluminum, Carbon Fiber Reinforced Polymer (CFRP)

Weight: approx. 237g (medium)

approx. 240g (long)

(manufacturer's specs)

Cage Length: Medium | Long

Largest Sprocket: 45 teeth (medium)

51 teeth (long)

Overall Capacity: 35 teeth (medium)

41 teeth (long)

Smallest sprocket: 10 teeth

Brand: Shimano
Type: Bike Rear Derailleurs
Discipline: Mountain
Rear Derailleur Speed: 12 Speed
Item condition: New
Availability: Buy online
ID: 106072190

Shipping policy

Exchange, Returns, and Refunds Policy

Please choose carefully before you buy.

For faulty products, Bikebug Online offer a 14 DAY REPLACEMENT WARRANTY, from the date you receive your product. They do not offer a satisfaction guarantee on any of their products, however due to their high level of customer service, they will always endeavour to keep customers happy and satisfied.

If your product is faulty, it will be replaced with an identical product. If they cannot replace the product, they will offer you the option of choosing another product of the same value, or provide you with a refund for the total value of the faulty product.

Please note: Standard postage fees apply to all return orders. Where the return relates to a faulty item, the replacement product will be sent out to you, at no charge, within 5 working days from the date we receive the faulty product.

When returning your product, please make sure you provide the following details:

  • Your full name
  • Your order number
  • Reason why you are returning the product
  • Your instructions informing us how you would like the issue resolved.

Please include the original order confirmation or invoice you received with your product. Also, if you haven't previously provided a contact phone number, please include this with your return. This will ensure the issue is resolved quickly, should anyone need to contact you.

Shimano XTR M9100 12 Speed Rear Derailleur

Now $299.99 $349.99

FREE shipping within Australia over $99.00
Buy online only


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