U-Lock 420/170HB300+USH Ultimate Key

Ultimate 420/170HB230 + USH

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

All varieties for Ultimate 420
Colors for 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.

Awards & partner
Test seal of Sold Secure Gold – Northants, Great Britain
Test seal of Sold Secure Gold – Northants, Great Britain
ABUS seal for Ice Spray Test – Volmarstein, Germany
ABUS seal for Ice Spray Test – Volmarstein, Germany
Awards & partner


  • 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


  • 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
Tech Specs
EAN: 4003318396311
Width: 3 15⁄16 inch
design color: red
Weight [lbs]: 2.43 lbs
Locking type: key
Height: 9 1⁄16 inch
Carrier: USH
diameter: 43⁄64 inch
Security Level Bike: 12