Hardened Steel
The 14mm shackle provides high-strength resistance against force.
Heavy-duty U-locks provide hardened steel protection for various two-wheeled vehicles. These models include integrated mounting hardware for seamless transport on the frame
The 14mm shackle provides high-strength resistance against force.
Included hardware allows the lock to attach to the bike.
Designed for road bikes, mountain bikes, and motorcycles.
This series features 14mm thick hardened steel construction for maximum durability. The compact folding and U-lock designs cater to high-security requirements across different terrains.


Look through Heavy duty bike locks, Hardened steel locks, Locks with mounting brackets, Motorcycle grade locks to see how the Efoxcity models split.
Efoxcity keeps the build language in the product names: Heavy duty u-lock with mounting bracket.
Pick a Efoxcity model from Heavy duty bike locks, Hardened steel locks, Locks with mounting brackets, Motorcycle grade locks when that is the job you have.
Start with Heavy duty u-lock with mounting bracket and match the listed type to what you need.
Also in 10mm thick 14mm thick
The 14mm steel feels incredibly strong and the mounting bracket fits my road bike perfectly.
I use this for my motorcycle and the heavy-duty U-lock provides great peace of mind.
The hardened steel is very tough and the bracket makes it easy to carry on trails.
The lock features a 14mm thick hardened steel shackle.
Yes, it includes a mounting bracket for your bike frame.
Yes, these are rated as motorcycle grade locks.
The locks are made from heavy-duty hardened steel.