Unfortunately, this deal has expired 3 days ago.
Posted 13 July 2023

Shimano M6100 Deore 12 Speed MTB Single Chainset 170mm 30t with bottom bracket £37.95 delivered @ Chain Reaction Cycles

£37.95£89.9558% off
Free ·
goinsane3's avatar
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Product description
This 12 speed crankset is engineered for fast and fun MTB riding, as it gives you fast and acceleration and smooth performance as you blast across the mountain. It features a hard-wearing and forged alloy crank arm construction, which makes it more than capable of handling all the abuse that’s associated with all-day epics in the mountains. Shimano has also equipped this model with a lightweight aluminium single chainring for the ultimate strength to weight balance.

170mm crank
Including bottom bracket
Chain Reaction Cycles More details at
Community Updates
Edited by goinsane3, 20 August 2023
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  1. grahamohara2's avatar
    Nice crank
  2. stu888's avatar
    Does this include the left crank too?
    goinsane3's avatar
    Yes, full set including bottom bracket.
  3. akexuk's avatar
    Amazing price. Paid £30 to replace a misthreaded sra crank!
  4. john184's avatar
    Could someone please advise me whether this is compatible with a 9 speed rear cassette/derailleur (Sram x5). I just want the bike running and assume this would give an upgrade path for the rear casette/derailleur in the future.

    I need new crank arms and bottom bracket for the bike (an old Decathlon 5.3 with 26" wheels) and this seems like a cost effective replacement.
    This would be replacing a triple chainring.
    Can anyone advise on problems. I assume the bottom brackets are standard screw-in size. The front derailleur has long since broke off.
    Any help appreciated as I don't really want to buy a new bike but the BB is grinding and the crank arms literally fall off so I just want her reliable.
    UKScottDeals's avatar
    The teeth on the crank will be much narrower for 12 speed Vs 9 speed. Might work, but the chain may move around more/wear more. 12 speed casettes likely also require new freehub body on the wheel too... Worth considering a Deore 1x 11-speed setup (wide range 5000 series) as this likely uses the same HG type free hub, and is good value. I am unsure about SRAM equivalent offerings. 9 speed also has different pull ratios to change gear so you'll need a new rear shifter too for 11 or 12 speed. (edited)
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