The XTR CS-M9100 by Shimano is a 12-speed cassette with a balanced gear ratio. This primarily pleases enduro pilots, as it helps them master steep climbs and fast-paced sections with speed and appropriate cadence.

The gear change steps are even smaller for optimum rhythm and cadence between each gear, as well as maximum speed. Another advantage of the Hyperglide+ cassette is optimized shifting speed, without the chain bouncing during larger gear steps.

The Micro Spline freehub was designed to offer space for a twelfth sprocket and replaced the Shimano’s previous gearing. It is thanks to the intelligent combination of different materials that the even stiffer and more durable cassette has gained less than 10 per cent in weight compared to the 11-speed predecessor model. The largest sprockets use aluminium, the middle use titanium and the smallest use of steel.


- Hyperglide+ cassette 12-speed
- For double drivetrain systems
- For Shimano Micro Spline freehub
- Compatible with Shimano 12-speed HG+ chains, such as Shimano CN-M9100 
- Material: steel, titanium, aluminium
- Aluminium spider (anodised)
- Incl. aluminium locknut
- Let you pedal continuously while shifting
- Increased acceleration by reducing inertia and weight by Beam Spider construction
Definitive shifting
- New MICRO SPLINE * construction to engage Freehub body
- Weight: Approx 349g
- Ratio:10-12-14-16-18-21-24-28-32-36-40-45T
- Ratio:10-12-14-16-18-21-24-28-33-39-45-51T

Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.

Shimano XTR M9100 Cassette 12-Speed

SKU: CSM9100051

Barcode: 4550170893323

The XTR CS-M9100 by Shimano is a 12-speed cassette with a balanced gear ratio. This primarily pleases enduro pilots, as it helps them master steep climbs and fast-paced... Read more

£299.95 RRP £329.99SAVE 9%

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  • Silver / Black Silver / Black
Size Please select
  • 10-51
  • 10-45


Delivery Information

We have a range of delivery options on orders. Most importantly, if your order is over £50 then delivery is free!

All Biketart orders are fully trackable. You will get a tracking number by email when your order is shipped which will allow you to track it with Royal Mail or DPD.

In-stock orders placed by 4pm will be processed the same day.

Any items displaying "in-stock with supplier, despatched in 2-3 days" on the product page cannot be despatched the same day as they will be shipped to us from the supplier when you place your order.

Read on to discover the delivery options available to you on your order.

Delivery Services

Standard Tracked: All orders over £50 are eligible for free standard tracked delivery by Royal Mail. For orders under £50 there is a £2.99 charge. Orders sent using standard tracked are usually delivered in 2-3 days.

Priority Tracked: For £3.99 your order is sent by premium tracked delivery which gives a 1-2 day (including Saturdays) delivery timescale. This service is provided by Royal Mail who will usually deliver on Saturdays. Orders must be placed by 4pm.

Next Day Courier: If you require next-working-day delivery then this is provided by DPD and is £6.99. Orders must be placed by 3.30pm and be fully in-stock in order to be processed before our daily DPD collection.

Saturday Delivery: You can select Saturday delivery options from DPD at the checkout.

Bike Delivery: Bikes are always delivered by courier. After placing a bike order your bike is fully assembled and tested before being carefully boxed for shipping. Because of this build process it is not always possible to offer next-day delivery on a bike. Please do get in touch if you want to know a specific despatch day on any bike on our website. Call us on 01227 832582 or email

Returns Info

We offer a 30 day return period on our items. We ask that items are returned in their original packaging and in re-sellable condition. We do not pay returns postage.unless we have made an error with your order.

We cannot accept the return if the item is not correctly packaged and is damaged in transit during the return trip back to us.

    Please do not stick any tape or labels to the products branded outer packaging.

      If you require an exchange it is recommended that you re-order the correct size/item and return the item you do not wish to keep to us for a refund.

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