Your complete guide to Shimano mountain bike drivetrains - Tourney, Altus, Acera, Alivio, Deore, SLX, XT, XTR 12 speed

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Rachael Wight's picture

Previously Editor here at, Rachael is happiest on two wheels. Partial to a race or two Rachael also likes getting out into the hills with a big bunch of mates. In the past Rachael has written for publications such as, Enduro Mountain Bike Magazine, Mountain Biking UK, Bike Radar, New Zealand Mountain Biker and was also the online editor for Spoke magazine in New Zealand too. For as long as she's been riding, she has been equally happy getting stuck into a kit review as she is creating stories or doing the site admin. When she's not busy with all the above she's roasting coffee or coaching mountain biking in the Forest of Dean. 


3 years 5 months ago

Also worth mentioning Deore 5100 here.

11sp 1x or 2x

Hollowtech cranks, 96mm BCD, Boost and non-boost options. 

30/32/34T chainring options for 1x 

36/26T double

11-51T option for 1x drivetrains, 11-46T maximum for 2x

Clutched rear mech

Total cost for 1x with 11-51T around £200 including BB

Reckon that we'll see a ton of entry level bikes running this in 2021, and if not it's a quick upgrade to modernise an Altus/Tourney bike.