Abus 420K/150HB230 U-Lock

Sold Secure Gold is a rigorous independent testing standard that indicates the lock can withstand a sustained attack using common tools like bolt cutters, hacksaws, and drills. It is widely recognized by insurance companies as a high-security rating, making it a reliable choice for locking your bike in high-theft urban environments.

The included USH bracket is designed to accommodate frame tubes with a diameter between 24mm and 35mm. It is a versatile mount, but you should measure your bike's down tube or seat tube before purchasing to ensure a secure fit.

Weighing in at 3.4 lbs, this lock is substantial, which is expected for a high-security hardened steel U-lock. The included mounting bracket helps distribute that weight effectively on your frame, making it feel less cumbersome than carrying it in a backpack.

A double-bolt mechanism secures both ends of the shackle into the lock body, which significantly increases resistance against twisting or leverage attacks. This design is much harder to defeat than single-bolt locks, which can be vulnerable if the shackle is cut on only one side.

Abus has specifically engineered this model with an improved design to minimize noise. While no lock is completely silent, the fit and finish of this unit are designed to keep it stable and rattle-free during your commute.