Ultimate 420

The Ultimate 420 U-lock combines ABUS security technology and compact design into a lock that will make thieves tear their hair out.

Ultimate 420


The Ultimate 420 radiates a feeling of security through its appearance alone.

There are locks and then there is the Ultimate 420. If you are looking for a shackle lock that will deter potential thieves just by looking at it, then you don't have to look far. Thirteen millimetres of hardened special steel and aggressive colouring make it immediately clear to any bicycle thief that they have no chance here.

At the same time, the Ultimate 420 is so compact that you can easily stow it away. It finds its place in every backpack and bag and is therefore always with you when you need to secure your valuable bicycle.


  • Hardened 33/64" round bracket
  • The shackle, housing and supporting parts of the locking mechanism are made of specially hardened steel
  • Special, modern design of the lock body sheathing enables optimum handling
  • High-quality locking cylinder for high protection against manipulation, e.g. picking

Operation and use:

  • Good protection at medium theft risk
  • Recommended for securing good bicycles
  • The longer the shackle, the easier the bicycle can be locked to a fixed object


  • USH – Bracket with easy mounting on round tubes with a diameter of 15 - 35 mm.
420/170HB230 + USH + 10/120 Ultimate 

Level: 12
Weight [lbs]: 3.17 lbs
420/150HB140 + USH Ultimate 

Level: 12
Weight [lbs]: 1.98 lbs
420/170HB230 + USH Ultimate 

Level: 12
Weight [lbs]: 2.43 lbs
420/150HB140 + USH + 10/120 Ultimate 

Level: 12
Weight [lbs]: 2.73 lbs
420/170HB300 + USH 

Level: 12
Weight [lbs]: 2.87 lbs



The U-lock is a classic when it comes to securing bikes, and for good reason. Solid materials and no moving parts outside the lock mechanism are an excellent starting point for the strongest resistance possible. Decades of experience with the U-lock have made us experts in combining the most resistant materials with unique technology, and consequently one of the leading U-locks manufacturers. By the way: the police and insurance companies ...
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