A strong fit for commuters and urban riders who need convenient, key-free security for short stops and easy transport.
For everyday urban parking, this lock gives you a useful balance of reach, portability and straightforward operation. The 5 mm heat-treated hardened steel chain is designed to resist cutting and pulling, while the resettable combination mechanism offers up to 10,000 unique combinations without the need to carry a key.
At 100 cm long, the chain can be secured around your bike and a fixed object such as a rack, railing or post. The high-quality nylon sleeve helps prevent scratches, and the included ULAC Velcro strap keeps the lock manageable when wrapped around a top tube or seat post. At 540 g, it is a sensible option for commuters and urban riders who want more substance than a basic cable without carrying a heavy-duty chain.
Heat-treated hardened steel chain
The 5 mm chain is built to provide resistance against cutting and tensile force for everyday urban locking.
100 cm locking reach
The practical length makes it easier to connect your bicycle to fixed objects such as bike racks, railings and posts.
Resettable combination lock
Choose your own code and avoid carrying or losing a separate key, with up to 10,000 possible combinations.
Protective nylon sleeve
The high-quality sleeve helps shield your bicycle’s finish from scratches while the lock is being used or carried.
Flexible bike mounting
Wrap the lock around the top tube or seat post for convenient on-bike transport.
Backpack-friendly storage
Fold the lock into a backpack when you would rather not carry it on the bicycle.
ULAC Velcro strap included
The supplied strap helps keep the chain organised and secure during transport.
General
Materials & construction
Dimensions & weight
Compatibility
Features
What's included
A bike lock is not just a bike lock.
ULAC is a Taiwanese bicycle-lock brand established in 1982. It began as an original equipment manufacturer producing high-security solutions for global industry leaders, then transitioned to an independent, consumer-focused brand in 2015 with the Si Works silicone lock collection.
ULAC develops security products through its in-house U-Lab research and development centre and operates its own manufacturing facility. Its work includes integrated alarm systems, NFC smart-lock technology and biometric authentication, alongside conventional bicycle-lock hardware and design-led products.
