Cyclorise, UK Distributors of Revel Bikes, Fasst Co, OChain and other brands, have launched their very own drivetrain component brand called Twenty21. Setting out to fill the gaps left by COVID-induced supply chain issues, Twenty21 offer cassettes and chains for 10-, 11- and 12-speed drivetrains, for both SRAM and Shimano setups. 

Twenty21 Drivetrain Components

twenty21 12 speed shimano cassette microspline 10-52T

Twenty21 are B2B only, so if you’re in desperate need of a new 12-speed chain or cassette, you best get your local bike shop to apply for an account with Cyclorise ASAP. Most components, including 12 speed chains and cassettes for SRAM and Shimano, are available to pre-order only, though Cyclorise say they have more stock arriving every couple of weeks.

twenty21 12 speed chain

Cyclorise say the Twenty21 chains are made by the same factories that make the very best chains in the world

At the moment, Twenty21 offer 10-, 11- and 12-speed chains compatible with SRAM, Shimano, TRP and BOX drivetrains. They feature an outer plate chamfer for fast shifting, laser cut to save on weight. They also get power riveted pins with a chromium carbide coating for increased strength. Each chain comes with a quick-link.

12 speed cassette sram xd twenty21

Twenty21 also have 11- and 12-speed cassettes with fitments for HG, SRAM XD and Shimano MicroSpline freehub bodies.

Update: Cyclorise tell us they are getting different models of cassette from different sources, though all from the “far east”, and not unique to Twenty21. “We have tested a range from different sources and settled on those we feel offer solid performance for a competitive price when compared to our brand-name competitors. Our proposition is UK held stock, warranty and a reliable quality” – Thomas at Cyclorise.



  1. Darren on

    Where are their products manufactured? Seems to be just a rebrand of Chinese items, or UK distribution of Chinese products already out in the market.

  2. alloycowboy on

    Who is engineering, manufactering and, doing quality control on these items? These are the really important things your readers care about so they don’t die using these products when a cassette or chain fails.

  3. K-Pop is dangerous to your health on

    Jim E, I just clicked through the entire site and found no problems. Maybe it’s time to upgrade your Commodore 64.

  4. eddiecycle on

    These look like another rebranding of Sunrace stuff. If so it’s pretty solid, with quality on par with last gen XT in my experience

  5. andrewfelixrose on

    These are literally ZTTO parts (aliexpress). FYI they are not good I’ve been through two of them, they never shifted right and they lasted around 1000km if not less.

    Sunrace are actually much better.


COMMENT HERE: (For best results, log in through Wordpress or your social media account. Anonymous/fake email comments may be unapproved or deleted. ALL first-time commenter's posts are held for moderation. Check our Comment Policy for full details.)

This site uses Akismet to reduce spam. Learn how your comment data is processed.