The Lumintrail combination U-lock with braided steel cable is a small U-lock that will mount right onto your bike frame.  I got it because I’m always losing keys so I have a few U-locks that I can’t use because I can’t open them.  The combination saves me for this fate… as long as I don’t forget the combination.  Fortunately, setting the combination was super easy so I should be good to go.  The lock doesn’t feel incredibly strong (certainly not a NY U-lock) but should be fine for my country town… it is, after all, made of stainless steel.  The braided cable will be more useful as it will secure my tires, which are more likely to be stolen than the entire bike.  The mounting bracket is cheap and mine snapped during installation.  Not the end of the world as I have bike bags and can always get another mounting bracket, but disappointing.  In all, I’d say that this is a decent lock with a good cable.


  • Hefty 14mm hardened high-grade steel shackle resists cutting, prying, or jacking
  • 4 number resettable combination lock so you don’t have to worry about bringing your keys
  • Rubber-coated crossbar cover protects paint and finishes of our bike
  • (Optional) double looped 4ft 12mm-thick braided cut resistant steel cable for securing front wheel or accessories, (2.5 feet usable length)

Purchase: on the LuminTrail website (where it is currently listed at $19.99)