MADE IN BRITAIN · SOLD SECURE DIAMOND
Most locks fall to an angle grinder in seconds. LITELOK's Barronium® armour turns that quick theft into a long, loud, disc-burning ordeal most thieves won't risk, so your bike is still there when you get back.
4.8/5 from 10,000+ riders
ONE RANGE · EVERY RIDE
Every lock in the X range is Sold Secure Diamond rated and built with Barronium®. The difference is reach, size and weight — so you get maximum security without carrying more than you need.
Our lightest grinder-resistant D-lock. For tight parking and smaller wheels — maximum security, minimum bulk.
from £139.99
View X1 MINI
The Best Bike Lock in the World. Wear it, carry it, lock almost anywhere — the rider favourite.
from £169.99
View X1
The world's only long-reach grinder-resistant D-lock. Locks through your wheel AND to a post, rail or stand.
from £219.99
View X1 PLUS
Our toughest lock — up to 20× more grinder-resistant. For the highest-risk spots and bikes you leave parked all day.
from £279.99
View X3Take our 60-second quiz and we'll match you to the right LITELOK.
Take the 60-second quiz
BUILT WITH BARRONIUM®
Barronium® is our hardened composite armour. Instead of being sliced like hardened steel, it chews up cutting discs — forcing thieves through disc after disc, minutes of effort, sparks and noise they can't afford.
Engineered to outlast the best-selling, unarmoured D-locks against an angle grinder (X3 at least 20x; X1 at least 5×).
The highest security tier — and the rating insurers look for.
Riders are surprised how light it is for the protection — easy to carry, wear or stash.
Real British engineering, not mass-produced in the Far East.
WILL IT FIT?
Internal dimensions are what matter for fit — measure the frame tube, wheel and stand you lock to most often.
| X1 MINI | X1 | X1 PLUS | X3 | |
|---|---|---|---|---|
| Lock type | Compact D-lock | D-lock | Long-reach D-lock | D-lock |
| Grinder resistance vs best-selling unarmoured D-locks | At least 5× | At least 5× | At least 5× | At least 20× |
| Sold Secure | Pedal Cycle Diamond Powered Cycle Diamond |
Pedal Cycle Diamond Powered Cycle Diamond |
Pedal Cycle Diamond Powered Cycle Diamond |
Pedal Cycle Diamond Powered Cycle Diamond |
| Weight | 1.48kg | 1.7kg | 1.99kg | 2.1kg |
| Internal dimensions | 99 × 137mm | 101 × 197mm | 101 × 255mm | 100 × 195mm |
| Shackle | 21 × 24mm | 21 × 24mm | 21 × 24mm | 24 × 27.5mm |
| Cylinder | ART4 accredited | ART4 accredited | ART4 accredited | ABLOY® SENTRY |
| Warranty | 3 years | 3 years | 3 years | 7 years |
| Best for | Lightest daily carry | Everyday commuting | Frame, wheel and stand | Highest-risk parking |
| Price | $299.99 | $369.99 | $449.99 | $599.99 |
| View | View | View | View |
An angle grinder is the fastest and most common tool used in serious bike theft. When a lock is described as angle grinder resistant, it means it has been engineered to withstand and delay a grinder attack far longer than a standard bike lock — making the attack slower, noisier and much harder to finish.
We'll be straight with you: no lock is angle grinder proof, and anyone who tells you otherwise is selling you something. What the right lock does is change the maths. Every extra disc a thief burns through, and every extra minute of sparks and noise in public, is another reason to give up and walk away — or another chance to be interrupted.
LITELOK achieves that with Barronium®, a patent-pending composite armour that turns a grinder's own energy back in on itself and destroys cutting discs, rather than being sliced like hardened steel. It's why the X1 is at least 5× and the X3 at least 20× more resistant to grinder attack than the best-selling, unarmoured D-locks — and why every lock in this collection carries Sold Secure Pedal Cycle Diamond and Powered Cycle Diamond, the highest independent tier and the rating insurers look for.
Whether you need an angle grinder resistant D-lock (also called an angle grinder resistant U-lock) for commuting, or an angle grinder resistant e-bike lock for a high-value electric bike, get the most from it with good technique: lock the frame and rear wheel to a solid fixed object, fill as much of the lock's internal space as you can, keep the lock off the ground, and use two locks in the highest-risk spots.
Long enough to ruin a thief's day. Barronium® armour is built to destroy cutting discs rather than be sliced, so an attack means multiple discs, minutes of effort, and a lot of noise and sparks. It's independently Sold Secure Diamond rated, the highest tier. Watch the grinder test and judge for yourself.
Riders are surprised how light it is. Because it's built from Barronium® composite rather than a solid lump of hardened steel, you get top-tier protection that's genuinely easy to carry, wear or stash under the seat.
The X range covers everything from tight parking (X1 MINI) to the longest reach for locking through your wheel and to a fixed object (X1 PLUS). Use the quiz above, or each product page lists exact internal dimensions. If you're unsure, message us your bike and we'll tell you.
Weigh it against your excess, your premium, and the cost of replacing your bike. A lock a grinder beats in seconds isn't a saving — it's a gamble. LITELOK is the security you buy once, backed by up to a 7-year warranty.
Yes — ask about Key Match (keyed-alike). Ideal if you run more than one lock or more than one bike and don't want a pocketful of keys.
Free UK shipping on the X range (excludes Northern Ireland), with next-working-day delivery available for a small fee. InPost Locker delivery is also available at checkout.
