The new Shimano XTR M9100 Cassette 12-Speed sets the standards by which all others will be judged for years to come. A smart mix of titanium, steel and aluminium cassette cogs ensures that there is the perfect balance of weight saving and durability. Those cogs mount to the new 'beam' spider, which is stiffer than ever before and means better acceleration. The new micro-spider fitting also results in better pick up for the Shimano XTR M9100 Cassette. Gear range is a choice of big climbing 10-51 tooth or tighter ration 10-45 'Rhythm' for shifts so fast you'll need a speed trap to catch them. The Shimano XTR M9100 Cassette's Hyperglide + design means that those shifts will also be jazz soundtrack smooth and completely reliable all the way from sprints right to lung busting 'one-more-gear' mega climbs. For riders ready to make 12 speed their set up of choice, the Shimano XTR M9100 Cassette 12-Speed is the perfect partner.


  • 10-51 tooth standard or 10-45 'Rhythm' options
  • Hyperglide + design
  • Aluminium, titanium and steel cogs
  • New 'Beam' alloy spider
  • 1x or 2x compatible
  • Weight: 367g (10-51) 357g (10-45)

Shimano XTR M9100 Cassette 12-Speed

The new Shimano XTR M9100 Cassette 12-Speed sets the standards by which all others will be judged for years to come. A smart mix of titanium, steel and aluminium cassette... Read more

£324.99 £292.49

Select Colour
  • 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 £40 then delivery is free!

All Biketart orders are fully trackable. You will get a tracking number by email when your order is shipped.

Delivery Services

Standard Tracked: All orders over £40 are eligible for free standard tracked delivery. For orders under £40 there is a £2.99 charge. Orders sent using standard tracked are usually delivered in 2-3 days.

Premium 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 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.