About the Abus Ultimate 420 From the very first moment you sight the Ultimate 420 it radiates a feeling of security. To a thief looking at this lock is an automatic deterrent. There are locks and then there is the Ultimate 420. Thirteen millimetres of specially hardened steel with aggressive colouring make it immediately clear that any bicycle thief has no chance here. Amazingly, the Ultimate 420 can easily be stowed away. It finds a place in every backpack and bag making it easy to secure your valuable bicycle. Key Features Good protection at medium theft risk for good bicycles Special, modern design of the lock body sheathing enables optimum handling High-quality locking cylinder for high protection against picking About Abus ABUS keep supplying people with innovative security technologies, since 1924. Whether you want to secure your bike against theft, protect your head in a fall with a bike helmet or simply transport a few items without damaging them. ABUS consistently provides the right solution for bicycle security and transportation. From basic protection to high-tech locks to protect you against theft. Or from the first bike helmet for your child to helmets for professional cyclists. Or from the wide range of sportive, elegant and functional bike bags. Bicycle Locks Buying Guide