ULAC 52nd Street Nuvo Chain Combo Lock 4mm × 100cm
Lightweight Security. Cut-Resistant Cover. Key-Free Convenience.
The ULAC 52nd Street Nuvo Chain Combo Lock is designed for riders who want a lightweight and easily carried lock for café stops, short errands and lower-risk locations.
Its flexible 100cm length makes it easy to secure a bike to many racks and fixed objects. A 4mm heat-treated steel chain provides the underlying strength, while the UHMWPE outer sleeve adds cut resistance and helps protect the bike’s paintwork.
Heat-Treated Steel Chain
The 52nd Street Nuvo uses a 4mm heat-treated hardened-steel chain designed to resist cutting and tensile force.
Its flexible construction makes it easier to position around different frame shapes and locking points than a rigid lock. The lighter 4mm chain also keeps the total weight down to approximately 365g.
Cut-Resistant UHMWPE Sleeve
The chain is enclosed within an ultra-high-molecular-weight polyethylene sleeve.
UHMWPE is a strong and abrasion-resistant fibre that provides greater cut resistance than a conventional nylon covering. The sleeve also keeps the steel links away from painted frame surfaces, helping prevent scratches during locking and transport.
Key-Free Combination Locking
A resettable four-digit combination mechanism provides up to 10,000 possible codes.
There is no key to carry or lose, making the lock convenient for recreational rides and regular café stops. The combination can be changed by the owner to a memorable but less obvious number.
Practical 100cm Length
The 100cm chain provides useful reach for securing a bike to many standard racks, posts and other suitable fixed objects.
Its flexible shape makes it easier to pass around different frame designs or include a wheel when the locking point and available chain length allow.
Easy to Carry
At approximately 365g, the 52nd Street Nuvo is light enough to carry on regular rides without adding excessive weight.
The included ULAC hook-and-loop strap keeps the chain bundled for storage. It can also be wrapped around a suitable top tube or seatpost, provided it is secured firmly and cannot interfere with steering, pedalling, suspension or the wheels.
Key Features
• Lightweight combination chain lock
• 4mm heat-treated hardened-steel chain
• Designed for cutting and tensile resistance
• Cut-resistant UHMWPE fibre sleeve
• Protective outer layer helps prevent frame scratches
• Resettable four-digit combination mechanism
• Up to 10,000 possible combinations
• No key required
• Flexible 100cm chain length
• ULAC hook-and-loop storage strap included
• Can be wrapped around a suitable top tube or seatpost
• Approximate weight of 365g
• Suitable for conventional bikes and e-bikes
Why Riders Love the ULAC 52nd Street Nuvo
• Lightweight enough to carry on everyday rides
• No key to remember or lose
• Flexible chain is easy to position around bike racks
• Protective sleeve is kinder to frame paintwork
• 100cm length provides practical locking flexibility
• Combination can be reset by the owner
• Compact and easy to store
• Useful for short stops and lower-risk locations
Who Is This Lock For?
The 52nd Street Nuvo is suited to recreational cyclists and commuters who want a lightweight lock for brief stops in lower-risk locations.
It is particularly useful for café rides, quick errands and situations where the bike remains nearby or within sight. For expensive bikes, extended parking or higher-risk areas, we recommend using a heavier security-rated lock or combining the Nuvo with a second lock.
Perfect For
✔ Café and bakery stops
✔ Short errands
✔ Recreational rides
✔ Lower-risk locations
✔ Securing a bike within sight
✔ Riders wanting a lightweight lock
✔ Cyclists who prefer a combination mechanism
✔ Conventional bikes and e-bikes
Our Thoughts on the ULAC 52nd Street Nuvo
The 52nd Street Nuvo is the model we’d choose when portability matters more than maximum security. At 365g, it is noticeably easier to carry than a heavier chain, while the 100cm length remains practical for common bike racks and posts.
The combination mechanism is convenient for café rides because there is no key to keep track of. We also like the UHMWPE sleeve, which provides additional cut resistance and reduces the chance of the chain marking the frame.
The trade-off is the lighter 4mm chain. We would use this lock for short stops in lower-risk locations rather than leaving a valuable bike unattended for an extended period. If you need a stronger everyday option, moving to one of ULAC’s 5mm Nuvo chains or adding a quality D-lock would provide greater security.
Why Buy from Chain Reaction
✔ Practical advice on choosing the right level of bike security
✔ Help with lock positioning and transport
✔ Security options for conventional bikes and e-bikes
✔ Finance options available
✔ Nationwide New Zealand delivery
✔ Ongoing support from our Christchurch team
Specifications
• Lock type: Combination chain lock
• Chain material: Heat-treated hardened steel
• Chain-link diameter: 4mm
• Chain length: 100cm
• Outer sleeve: Cut-resistant UHMWPE fibre
• Locking mechanism: Resettable four-digit combination
• Combination options: Up to 10,000
• Key required: No
• Storage accessory: ULAC hook-and-loop strap
• Approximate weight: 365g
• Intended use: Short stops and lower-risk bicycle security
• Security note: No bicycle lock is theft-proof; choose the lock and locking method according to the bike’s value, location and time left unattended
