Ultimate Commuter Bundle - X3 and CORE Flex
Made in Britain
What the experts say...
John Milbank, Bennetts BikeSocial
"By having the Litelok X3 as part of that set-up, you’ve made your bike one of the hardest to steal on the street. The Litelok X3 is now my personal choice of portable lock, and very much worthy of a BikeSocial recommendation."
Carl Ellis, thebestbikelock.com
"The Litelok X3 is the most angle grinder resistant portable bike lock I’ve ever tested. And I’ve tested them all now, so that means it’s the most angle grinder resistant portable bike lock you can buy!"
Ben Clarke, Motorcycle News
"X3 Moto has achieved a Sold Secure Diamond rating for bicycle and motorbike applications. And for an added bonus, it’s made in Britain at a solar-powered factory."
Success Stories
LITELOK X3 Saves E-Bike in Brooklyn #83
In a city that never sleeps, bike theft is a constant threat. When thieves tried to steal a $2,100 e-bike in Brooklyn at 2 a.m., only one thing stood between them and success, the LITELOK X3. Scarr...
LITELOK X3 Saves Bike in Massachusetts #44
LITELOK X3 saved Ryan's $1,474 Lectric XP bike at Harvard University's Campus in Cambridge, Massachusetts. For bike owners, securing your ride can often feel like a stressful endeavour, especially...
LITELOK X3 Saves £7k Cargo Bike in London #103
Robert’s £7,000 Tern GSD e-cargo bike faced a determined theft behind London’s Tate Modern, but thanks to the LITELOK X3, it survived with only minor cosmetic damage.
What Makes the World's Most Secure U-Lock?
It is the most secure full-sized armored U-lock on the market and contains a host of clever design features that make it easy to use and carry so you can keep your bike secure against the most determined bike thieves.
Lock Cylinder
LITELOK X3 is equipped with an ABLOY® SENTRY lock cylinder; the most pick-proof locking mechanism available.
Reflective Strips
X3 locks are finished with Onyx Black retro-reflective vinyl strips along the lock shackle and on the X's at each end. The reflective strips flash in headlights to keep you safe and seen.
Anti-Rotation
Unique anti-rotation feature protects against twisting attacks and single cuts
Armored with Barronium®
Barronium® fused composite armour repels angle grinder attacks and eats angle grinder discs.
LITELOK X3
Barronium®
Barronium® is a fused composite armor that offers unparalleled angle grinder resistance without adding extra weight. It is a super hard ceramic composite material that repels angle grinder attacks and turns the grinder's energy and force in on itself. Continuous cutting wears down the grinder discs, batteries and ultimately the grinder motor itself.
LITELOK X3
ABLOY® SENTRY
LITELOK X3 is equipped with a patented ABLOY® SENTRY lock cylinder; the most pick-proof locking mechanism available.
ABLOY® SENTRY is a new evolution of the unique ABLOY rotating disc technology that provides a smooth and reliable function in every environment.
LITELOK X3
LITELOK X-Pouch
Keep your LITELOK X in tip top condition and also keep any dirt and debris from your bag or panniers with our custom neoprene pouch. It’s a wetsuit for your LITELOK X3 and it's included with every purchase of X3.
LITELOK X3
X3 Tactical Mount
We've developed the X3 Tactical Mount (purchased separately) to make mounting your LITELOK X3 a breeze. Designed from scratch and tested to destruction, the X3 Tactical Mount is unlike any other mount. A tough mount for the world's toughest lock.
LITELOK Core Flex
CORE Flex combines the best in high-security materials and world-class usability. The result is a Gold-rated wearable lock that's easy to use and will keep your bike safe.
Boaflexicore+
Our Boaflexicore+ secure strap withstands sustained attack with layered protection including a plant-based polymer, radial reinforcement and high tensile core
Universally Wearable
LITELOK CORE Flex is the best wearable bike lock out there - it can be effortlessly worn whilst riding.
Lock Cylinder
Stainless steel, corrosion resistant hardened internals with high pick resistance and drill resistant rivets.
LITELOK CORE Flex
Universally Wearable
LITELOK CORE Flex is the best wearable bike lock out there - it can be effortlessly worn whilst riding. Simply wear your CORE Flex lock on your hips and secure it with the universal wearable kit which safely fastens around your body without it locking.
The pre-formed lozenge shape of the LITELOK CORE Flex not only makes for comfortable wearing by hugging the hips but is also easier to lock around fixed objects.
LITELOK CORE Flex
Made from Tough Stuff
We are setting the standard in cycle security through revolutionary design & innovative technology - by working with the world’s leading material scientists & cutting edge manufacturing techniques.
LITELOK CORE Flex features include; Corrosion resistant internals (tested to -40c), pick resistant disc detainer locks (tested to 10,000 open/close cycles) and automotive standard drill resistant rivets.
We minimise our environmental impact where possible by swapping plastic for plant based polymers.
LITELOK CORE Flex
Frame Mountable
Our team of in-house expert designers and engineers have a meticulous eye for product detail, with everyday usability at the heart of everything they create.
All LITELOK CORE Flex bike locks are supplied with a set of easy to use frame mounts. Adjustable hook and loop straps ensure it will fit most frame shapes and sizes, whilst the rubberised strap prevents damage to your much loved bike. The simple click and hold design makes mounting and un-mounting super easy, secure and hassle free.
LITELOK X3: Product Specifications
Get the lowdown on the vital statistics that make LITELOK X3 the most secure bike security choice for thousands of riders around the world.
LITELOK X3
LITELOK CORE Flex
Sold Secure Pedal Cycle Diamond, Sold Secure Powered Cycle Diamond, ART4
Sold Secure Pedal Cycle Gold
2.1kg / 4.6lbs
Ultimate Commuter Bundle - X3 and CORE Flex
Frequently Asked Questions
Is the LITELOK X3 angle-grinder resistant?
Yes. The LITELOK X3 is armored with patented Barronium®, a composite material designed to significantly resist angle-grinder attacks by turning the grinder’s energy back against itself.
While no lock is completely unbreakable, testing has shown the X3 offers at least 20× more resistance than current leading U-locks, requiring multiple cutting discs and batteries to defeat. This dramatically increases the time, effort, and noise involved — a strong deterrent for commuters in higher‑risk areas.
What is the advantage of using the CORE Flex with the X3?
The LITELOK X3 and CORE Flex are designed to work together to provide a balance of maximum security and everyday practicality.
Use the X3 as your primary lock when securing your bike frame to fixed objects in higher‑risk environments. The CORE Flex complements this by adding a lightweight, wearable, and flexible locking option, ideal for securing additional contact points such as wheels or accessories.
Together, they allow you to double-lock your bike, increase security coverage, and adapt to a wider range of locking situations — without the bulk of heavier secondary locks.
Is this bundle suitable for commuting and everyday use?
Yes. This bundle is designed specifically for daily commuting and regular urban use.
- The LITELOK X3 provides maximum protection when locking in exposed or higher‑risk locations
- The CORE Flex, with Sold Secure Gold certification, offers a more lightweight and portable option for additional security
Together, they provide a practical combination of high‑level security and everyday usability.
Can I wear the CORE Flex while riding?
Yes. The CORE Flex is designed to be worn around the waist while riding, using the supplied wearable kit for comfort and convenience.
It can fit waist sizes up to approximately 41", and the wearable system secures the lock in place without needing to fasten it tightly around your body.
How do I carry the LITELOK X3?
The LITELOK X3 can be carried in the supplied X‑Pouch, or mounted to your bike using the X3 Tactical Mount (sold separately).
Both options are designed to keep the lock secure, stable, and easy to access during your commute.
Can I attach the CORE Flex to my bike?
Yes. The CORE Flex is supplied with wrap straps and mounting options, allowing it to be attached to your bike frame, pannier rack, or other suitable points.
Its flexible construction also allows it to be coiled and secured neatly for transport when not in use.
Who invented Barronium®?
Barronium® was developed by LITELOK founder and CEO, Professor Neil Barron, with support from Innovate UK.
Developed over more than five years alongside leading material scientists, Barronium® is a patented composite material designed specifically to resist modern theft methods such as angle-grinder attacks.
Are the locks in this bundle keyed alike?
No. This bundle is not keyed alike.
The LITELOK X3 and CORE Flex each come with their own set of keys, allowing each lock to be managed independently.
What is the warranty?
Warranty is applied per individual lock in the bundle:
- LITELOK X3: 7‑year warranty
- LITELOK CORE Flex: 1‑year warranty
Both warranties cover mechanical or operational faults arising from normal use. Cosmetic wear and tear is not covered. We recommend registering your locks and keys so replacements can be ordered if required.
