Abus Ultra 410K U-Lock

The 12mm hardened steel shackle provides a solid defense against bolt cutters and leverage attacks, earning it a Sold Secure Silver rating. While it is highly effective for daily commuting and short-to-medium duration stops, we recommend pairing it with a secondary cable lock if you are leaving your bike in high-theft areas for extended periods.

The SH34 bracket is designed to be versatile and fits most standard round frame tubes. It is a secure, rattle-free mounting solution, but if you have an unusually shaped or oversized frame, you may want to double-check your tube diameter before installation.

The double-bolt mechanism locks both ends of the shackle into the housing. This significantly increases resistance against twisting attacks, which are a common method thieves use to try and pry open U-locks.

With internal dimensions of 150x180mm, this lock is compact. It is generally large enough to secure your frame and one wheel to a standard bike rack or post, but it may be a tight fit depending on your bike's geometry and the thickness of the object you are locking to.

Yes, the Abus Ultra 410K includes two keys. It is good practice to keep one in a safe place at home and register your key code with Abus so you can order replacements if you ever lose both.