Masterlock Criterion bike lock

James Shrubsall tests the Masterlock Criterion: a bike lock with tough credentials




  • Sold Secure Gold rated lock
  • Low weight will be welcomed when the lock is carried
  • Good length


  • Feels cheap
  • The shackle and body don't go together snugly

Price as reviewed:


The Masterlock Criterion bike lock sits at the top end of the bike lock market in terms of both cost and security. It sports a Sold Secure Gold sticker and costs close to £100, so sits resolutely at the business end of proceedings.

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Unfortunately, this is not obvious when holding the lock and you’d be hard pressed to guess as much, because it looks and feels rather cheap. With a plasticky body, dainty 1.3kg weight and the shackle’s less-than-snug fit into the body, only the plush keyhole dust cover hints at the quality within.

The lock is a good 270mm-long with a frame mount included, so usability is convenient and the lock can be used on non-uniform bike racks or railings.

We’re not going to argue with a respected independent body like Sold Secure so you should be in very safe hands with this bike lock, and its low weight will be welcome when stowed in a back pack or on the bike’s frame.