save 30% on Shimano XT M8100 1×12 Drivetrain Groupset

£370.99 £529.99
Chain Reaction Cycles

Shimano XT M8100 1×12 Drivetrain Groupset

This stunning drivetrain groupset was born for trail adventure, racing and to ensure reliability and performance are top-level. Ready to dominate every ride, this top-quality components package features some of the best Shimano technologies around, so you’ll enjoy their cutting-edge features that will help you take your off-road pursuits up a notch. Developed by Shimano to provide the ultimate in what is possible from mountain bike riding, the Deore XT M8100 drivetrain groupset allows for enhanced stability, superb shifting performance, exceptional consistency and is a transmission you can rely on.

Deore XT M8100 12 Speed Crankset

This high-quality 12 speed model is engineered for off-road use as its MTB gear teeth improve chain engagement and retention. It features hollow forged alloy crank construction which maximises its power transfer while keeping its weight reduced. Packed with some of the finest Shimano technologies around, this lightweight and rigid model is the perfect solution for dominating your way around the trails.


  • Material: Alloy
  • Use: MTB
  • Mount: Direct Mount
  • Speed: 12 speed
  • Number of Chainrings: Single
  • Arm: 4-arm
  • Chainline: 52mm
  • Q Factor: 172mm

Deore XT M8100 12 Speed Chainring

This high-quality 12 speed chainring is specifically engineered for MTB use as it delivers superior chain retention on the trails. It features a specially optimised gear tooth profile which improves chain engagement and retention, so you can ride confidently as you navigate around the mountain. In addition, its aluminium construction makes it incredibly tough when battling against trailside obstacles and rough terrain conditions.


  • Material: Aluminium
  • Use: MTB
  • Series: XT M8100
  • Speed: 12 speed
  • Arm: 4-arm
  • Mount: Direct mount

Deore XT M8100 Cassette

This wide range 12 speed cassette is engineered for aggressive off-road use as it delivers definitive shifting performance. It features a new shift ramp design with Hyperglide+ technology which provides faster and smoother gearing as you shred the trails. Furthermore, its lighter and stiffer construction reduces cassette resistance which results in faster acceleration and increased chain security.


  • Material: Aluminium
  • Speed: 12 speed
  • Type: Hyperglide+
  • 10T lowest sprocket realised by new freehub body construction
  • Definitive shifting performance
  • Wide range

Deore XT M8100 1×12 Speed Rear Derailleur

This solid 12 speed rear mech is optimised to take on any trail as it delivers fast and precise shifting performance. Its low profile design makes gear changes quick and silent in all positions, so you can navigate around the mountain with ease. To top it off, its newly added pulley cage bumper both protects the rear mech from trail-side obstacles and helps to keep your drivetrain stable on rough rides.


  • Material: Alloy; Pulley Bearings: Sealed
  • Size: Medium cage
  • Speed: 12 speed
  • Use: MTB
  • Bushings: 4 fluoric coated link bushings
  • Low Sprocket Max: 51T; Low Sprocket Min: 45T
  • Top Sprocket Max: 10T; Top Sprocket Min: 10T
  • Total Capacity: 41T; Max Front Difference: 0T; Pulley Teeth: 13T
  • Spring Type: Shimano Shadow RD+

Deore XT M8100 12 Speed Shifter

This compact 12 speed shifter features some of the finest Shimano technologies to give you fast and reliable shifting all across the mountain. This stunning model allows you to shift both up and down with a single lever and enjoy its instant push and pull movements as you dominate on the trails. Lightweight and responsive, it is perfect for MTB use as it gives you superior control, efficiency and concentration.


  • Rear Speed: 12
  • Max Multiple Shifts: 4
  • Mount: I-spec EV
  • Release Function: 2-Way Release, Multi Release, Instant Release
  • Shifter Type: Rapidfire Plus
  • Average Weight: 78g (Left); 117g (Right)

Deore XT M8100 12 Speed Chain

This lightweight 12 speed chain is ideal for conquering every MTB ride thanks to its remarkable strength and smooth shifting performance. It features an extended inner plate which improves chain engagement and retention for more efficient acceleration and gear changes. Easy to connect to your bike thanks to its Quick-Link, this is a perfect component for weaving your way around the mountain in style.


  • Use: MTB
  • Speed: 12 speed
  • Links: 126 links
  • Non-reusable
  • Quick-link easy connection
  • Weight: 252g (approx)

A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).

Buy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.


  • Colour: Black
  • Size: 10-51
  • Option: Bar Mount, I-Spec EV
  • Teeth: 32t
  • Speed: 12 Speed
  • Length: 170mm, 175mm
  • Material: Alloy

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