Ideal for commuters, urban riders and anyone wanting convenient key-free security for short stops at fixed city structures.
The ULAC ST Fighter Combo Chain is a convenient lock for quick urban stops, commuting and everyday errands. The 100 cm heat-treated hardened-steel chain provides useful reach around your bike and a fixed urban structure, while the resettable combination mechanism means there is no key to carry or lose.
At 540 g, the lock is manageable to take with you, and the included ULAC Velcro strap keeps it neatly secured for storage and transport. You can wrap the chain around the frame, top tube or seat post, making it easy to position on different bikes.
A high-quality nylon sleeve helps protect your bicycle’s finish from scratches as you lock it. Choose the ST Fighter when you want straightforward combination access, practical portability and a 5 mm chain in a subtle navy colour; as with any compact lock, choose a secure, well-used location and lock the frame whenever possible.
Heat-treated hardened steel
The chain is made from heat-treated hardened steel to provide resistance against cutting and tensile forces.
100 cm reach
The 100 cm chain gives you practical length for securing the bike to suitable fixed urban structures.
Key-free combination access
Set and use your own combination, so there is no key to carry or misplace.
Up to 10,000 combinations
The resettable mechanism offers a broad range of possible combinations for personalised everyday use.
Bike-friendly nylon sleeve
The high-quality nylon cover helps prevent the chain from scratching your bicycle’s finish.
Flexible mounting options
Wrap the chain around the frame, top tube or seat post while riding or when securing the bike.
Integrated storage strap
The included ULAC Velcro strap helps keep the lock together for easier storage and manoeuvring.
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.
