ULAC Grotesque Nuvo Chain Key Lock 4mm × 100cm
Lightweight Security. Cut-Resistant Cover. Simple Keyed Locking.
The ULAC Grotesque Nuvo Chain Key Lock is a lightweight and easily transported security option for café stops, short errands and lower-risk locations.
Its flexible 100cm length provides useful reach around many bike racks and fixed objects. A 4mm heat-treated hardened-steel chain provides the underlying strength, while a water-resistant UHMWPE sleeve adds cut resistance and helps protect the bike’s paintwork.
Heat-Treated Steel Chain
The Grotesque Nuvo uses a 4mm heat-treated hardened-steel chain designed to resist cutting and tensile force.
Its flexible construction is easy to position around different frame shapes and locking points, while the relatively light chain keeps the complete lock weight 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 chain covering. It creates an additional protective layer around the hardened-steel links without adding excessive bulk.
Protects the Bike and Chain
The soft outer sleeve prevents the steel links from contacting the bike directly, reducing the likelihood of scratches and marks during locking or transport.
Its water-resistant construction also helps protect the chain from road spray, dirt and damp riding conditions.
Straightforward Keyed Locking
The keyed locking mechanism provides a simple alternative for riders who do not want to remember or align a combination code.
It is quick to operate during regular stops and avoids the need to manipulate small number dials while wearing gloves or riding in low light.
Practical 100cm Length
The 100cm chain provides enough reach for securing a bike to many standard racks, posts and other appropriate fixed objects.
Its flexible shape makes it easier to work around unusual frame designs or include a wheel when the locking point and remaining chain length allow.
Easy to Carry
At approximately 365g, the Grotesque Nuvo is light enough to carry on regular recreational and commuting rides.
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 movement or the wheels.
Key Features
• Lightweight keyed chain lock
• 4mm heat-treated hardened-steel chain
• Designed for cutting and tensile resistance
• Cut-resistant UHMWPE fibre sleeve
• Water-resistant covering helps protect the chain
• Soft outer layer helps prevent frame scratches
• Straightforward keyed locking mechanism
• 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 Grotesque Nuvo
• Lightweight enough to carry on everyday rides
• No combination code to remember
• Flexible chain is easy to position around bike racks
• Protective sleeve is kinder to frame paintwork
• Water-resistant outer covering
• Practical 100cm length
• Compact and easy to store
• Useful for short stops and lower-risk locations
Who Is This Lock For?
The Grotesque Nuvo is suited to recreational cyclists and commuters who want a compact keyed lock for brief stops in lower-risk locations.
It is a practical option 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 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 physical key
✔ Conventional bikes and e-bikes
Our Thoughts on the ULAC Grotesque Nuvo
The Grotesque Nuvo is a practical lock for riders who want something light and straightforward to carry. At approximately 365g, it adds considerably less weight than a heavy-duty chain, while the 100cm length remains useful around most common bike racks.
We would choose this model over the combination version if you prefer the speed and simplicity of a keyed lock. The UHMWPE sleeve is another worthwhile feature because it provides an additional cut-resistant layer and reduces the chance of the chain marking the frame.
The lighter 4mm chain is best suited to short stops and lower-risk locations. We would not rely on it as the only security for a high-value bike left unattended for a long period. In those situations, adding a quality D-lock or choosing a heavier security-rated chain would be the safer option.
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: Keyed chain lock
• Chain material: Heat-treated hardened steel
• Chain-link diameter: 4mm
• Chain length: 100cm
• Outer sleeve: Cut-resistant UHMWPE fibre
• Sleeve protection: Water-resistant
• 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
