Fits Virtually Every Bike Motorbikes, Scooters & More
On & Off in Seconds No Tools, No Fuss
Lasts 5–6 Months per Charge Quick USB-C Recharge
Tough Aluminium Build Shrugs Off Knocks & Prying
Weatherproof, Rain or Shine Rides in Any Weather
Trusted by 10,000+ Riders • Worldwide Shipping & Support
10K+ Sold
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Ships by Wed, Sep 16
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90-DAY Money-Back Guarantee
Not 100% satisfied? We'll refund every penny — no questions asked, no forms, no fuss. You have our word.
"Honestly didn't think a disc lock could be this loud. Some idiot tried to wheel my bike off the drive and the alarm went off like a fire engine. Woke up half the street, woke up me, and by the time I got to the window he was already three gardens down. Fits my Yamaha perfectly."
Kev W., Coventry
I do the food delivery rounds on my scooter and I'm on and off it fifty times a night. Clips on in seconds and lives in my jacket pocket. Cheap insurance really. Two of the other lads at the depot have bought one since they saw mine.
Paul M., Bristol
"Bought this after a mate lost his bike to an angle grinder gang. Was skeptical, thought it'd be flimsy for the money, but it's a proper solid bit of kit. Weighs a fair bit in the hand which is exactly what you want. Rains constantly up here and it hasn't rusted or played up once."
Steve H., Newcastle
🛡️ Description
The Disc Lock That Screams Back
Thieves work in silence. Yours won't let them.
A scrote's whole game is quiet. Snap the steering lock, wheel it into a van, gone in ninety seconds — and nobody hears a thing. The DiscGuard ends that the instant they touch your bike: a 110 dB alarm tears down the street, heads turn, and they leg it to an easier target three bikes down. You can't make a bike un-nickable. You can make yours the one they skip.
🔊 How the alarm actually works
No app, no pairing, no manual. One hand, a few seconds:
Clamp it on, press to lock. Slot the DiscGuard over your brake disc and press the barrel down — one beep tells you the alarm's live.
It arms itself. Three seconds later, a second, longer beep confirms it's fully armed and watching. Walk away.
First touch = a warning, not a false alarm. The smart shock sensor knows the difference between a passing lorry and a thief. A knock or a nudge gets a few short warning chirps — not the full siren. No crying wolf, no waking the street for a gust of wind.
They push it anyway = the thunderclap. Keep tampering and it unloads the full 110 dB alarm for 10 seconds — chainsaw-loud, impossible to ignore. It resets and stays armed, ready to go again.
Off in one turn. Back at the bike, a single turn of the key disarms it — into your pocket, and you're gone.
🤫 Quiet Mode — you decide when it screams
Parked somewhere a siren would be more hassle than help (your own garage, a mate's van, the ferry)? Double-press the barrel within 3 seconds — you'll hear beep-beep, and the lock stays locked solid, just silent. Arm the alarm, or don't. Your call, every single park-up.
📏 Fits your bike — here are the actual numbers
Fitment is where cheap disc locks fall apart: the pin's too fat for the holes, or the jaw won't reach the rotor. The DiscGuard is built to the standard every brake disc is drilled to:
7 mm locking pin — slides straight through the holes standard on virtually every brake disc made, from a 125 commuter to a litre superbike.
65 mm (6.5 cm) slot depth — measured from the pin to the back of the jaw. Deep enough to seat right over the rotor and line up with those holes, whether it's a skinny scooter disc or a fat twin-disc front end.
If your brake disc has holes — and nearly every one does — it fits. Front disc, rear disc, motorbike or scooter. Across 10,000+ orders, exactly 5 came back over fitment.
🛡️ Built for the streets
Hardened alloy body that shrugs off hammers, pry bars and brute force. We're not going to insult you with "uncuttable" — nothing you can carry in a pocket is. This is the loud, hard layer that makes an opportunist decide yours isn't worth the noise. Sealed against salt and rain, so it won't seize or rust solid on you through winter.
🔋 Charge it once, forget it for months
USB-C rechargeable — same cable as your phone. About 2 hours for a full charge, and that lasts 6-9 months. No coin cells to die silent at −2°C the one night you need it, none to keep buying forever. A low-battery indicator gives you the nod long before it runs flat.
On in seconds, off in one — so it actually gets used
The best lock is the one you'll bother with every time. Ten seconds on, one turn off, small enough to pocket — this is the layer that comes to the coffee stop with you, not the chain that rusts in the garage. Every order ships with a free hi-vis reminder lanyard that loops to your bars, so you'll never pull away with it still on and crack a caliper.
🔒 What's In The Box
Everything You Need. Straight Out of the Box.
🔒 1× DiscGuard Alarm Disc Lock The star of the show. 110dB alarm, hardened alloy body, ready to armour up your brake disc in seconds.
🔑 2× Security Keys One for you, one for backup (or your partner in crime-fighting). Never get caught out with a lost key.
🟢 1× Hi-Vis Reminder Cable (FREE for Bundle orders) Loops from your lock to your handlebar so you never ride off with the lock still on. Saves your disc — and your dignity.
⚡ 1× USB-C Charging Cable Top up in ~70 minutes, ride protected for 5–6 months. Plug in, power up, forget about it.
All neatly packed, all included, all ready to go. Unbox it, clip it on, and let the DiscGuard do the worrying for you.
🔧 How To Use
Locked & Loaded in Under 10 Seconds
No manual needed. No tools. If you can clip a keyring, you can use the DiscGuard.
1️⃣ Clamp It On Slot the DiscGuard onto your brake disc, lining the pin up with one of the holes. Push it firmly until it clicks shut.
2️⃣ Press to Arm Press down to lock — the alarm arms itself instantly. That's it. Your bike is now guarded 24/7 and the lock can't be removed without the key.
3️⃣ Attach the Hi-Vis Reminder Loop the bright cable from the lock to your handlebar. A simple reminder that saves you from riding off with it still on.
4️⃣ Ride Off Worry-Free When you're back, just insert your key, turn, and lift it off. Disarmed and pocketed in one second flat.
💡 Pro Tip: Fit it to the front disc where it's most visible — the brighter and more obvious your lock, the faster a thief moves on to an easier target.
✅ Shipping & Guarantees
Shop with Confidence. We’ve got you covered.
We believe the DiscGuard should speak for itself. That is why we offer a completely risk-free shopping experience.
🛡️ 90-Day Money-Back Guarantee Try the Steerguard on your vehicle for a full 3 months. If it doesn't bring you the peace of mind you expected, simply return it for a full refund. No questions asked.
🇬🇧 London-Based Support Team Need help? Real humans are ready to assist you. Our customer service team is based in London and available to answer any questions or concerns. Contact us: support@trylockt.com
♻️ Hassle-Free Replacement Policy We stand by the quality of our lock. If your product arrives damaged or breaks under normal use, we don't just apologize—we replace it. Contact us, and we will ship a brand new one to your door immediately.
✈️ Free Tracked Shipping (Worldwide) We cover the shipping costs, so the price you see is the price you pay.
Secure Processing: Your order is packed and dispatched within 24-48 hours. Live Tracking: You will receive a tracking number as soon as your order leaves our warehouse.
Delivery Time: 4-12 Business Days
⚠️ WARNING: BEWARE OF CHEAP FAKES
The authentic DiscGuard is exclusively sold here. Knockoffs found on Amazon or TikTok are unreliable counterfeits that can fail when you need them most. Only our genuine lock uses a real hardened alloy body and a true 110dB alarm to guarantee your bike's security.
YOUR BIKE WILL BE STOLEN. IT'S JUST A MATTER OF WHEN.
EVERY 30 SECONDS. ANOTHER BIKE GONE.
Over a million motorcycles are stolen worldwide every year — from London to Los Angeles, Sydney to Toronto. Two thieves. Twenty seconds. Your bike is gone before you've finished your coffee.
THIEVES GO FOR THE EASY TARGET.
An unprotected bike is a free bike. Thieves scan the street for the one with no lock, no alarm, no fight. Be the one that screams back — and they move on to the next.
85% OF STOLEN BIKES ARE NEVER SEEN AGAIN.
Only around 1 in 6 stolen bikes is ever recovered. No bike back, no closure — just a claim, a rejected excess, and premiums that climb every renewal.
ARMED IN SECONDS. LOUD IN AN INSTANT.
Clamp it on your brake disc, press down, done — armed in under 10 seconds.
The moment a thief touches your bike, a 110dB alarm screams the whole street awake. They panic, they run, they leave empty-handed. While your neighbour's filling in insurance claims, you're sleeping soundly.
BUILT TO SURVIVE THE STREETS.
Hardened alloy body that laughs off every attack we threw at it—hammers, pry bars, brute force. All failed.
Anti-corrosion sealed to shrug off rain, snow, salt and heat, and a blinding 110dB alarm that turns any tamper attempt into a public scene. Compact enough to pocket, loud and tough enough to ruin a thief's night.
 
Ear-splitting 110dB alarm scares thieves off
Hi-vis body thieves spot & avoid from across the street
USB-C rechargeable — 5-6 months per charge
Small enough to pocket, tough enough to protect
Love it or return it — 90-day peace of mind
FITS YOUR BIKE. GUARANTEED.
The DiscGuard fits virtually every motorbike and scooter — from 125cc commuters to full-blown superbikes. Doesn't fit your disc? Full refund, no questions. But across 10,000+ orders, we've had just 5 come back. Your bike's covered. Your risk? Zero. Thieves' success rate? Also zero.
FITS ANY BIKE. LASTS FOR MONTHS.
BUILT TO FIT VIRTUALLY EVERY MOTORBIKE ON THE ROAD.
🏍️ From 125cc commuters to full-blown superbikes — if your brake disc has holes, the DiscGuard fits.
🔋 One USB-C charge lasts 5–6 months. No fiddly batteries, no nasty surprises.
⚡ Armed in under 10 seconds. Off in one. Simple enough to use every single time you park.
⚠️ Last year over a million riders learned the hard way. Don't be next year's statistic.
ROCK-SOLID PROTECTION FOR YOU TOO.
90-DAY UNFAILING GUARANTEE
Doesn't fit? Instant refund. Faulty? Instant refund. Thief beats it? Full refund. Put it to the test for 90 days completely risk-free. One email is all it takes for a refund within 24 hours. The only person taking a gamble is the thief.
YOUR 7 BIGGEST CONCERNS ANSWERED
Will this fit my motorbike or scooter?
Yes, the DiscGuard fits virtually every motorbike and scooter, from 125cc commuters to full-blown superbikes. The locking pin is sized to fit the standard holes on almost any brake disc. It takes 10 seconds to check: if your brake disc has holes (nearly all do), you're sorted. Still unsure? Email support@trylockt.com with your bike model and we'll confirm for you.
How quickly can I get it on and off?
Armed in under 10 seconds, off in one. No complicated setup, no instruction manual needed. Clamp it onto your brake disc, press down to lock, and the alarm arms itself instantly. A quick turn of the key and you're gone. Simple enough to use every single time you park, but tough enough to stop thieves in their tracks.
Can thieves actually break through this?
The DiscGuard's hardened alloy body is engineered to resist hammers, pry bars and brute force. But its real weapon is the noise: the moment anyone touches your bike, a 120dB alarm screams the whole street awake. No security is 100% invincible, but here's the reality of UK bike crime — thieves want quiet, easy targets. A lock that's impossible to break silently and screams the second they try? They move straight on to the next bike. It's your first and loudest line of defence.
Won't the alarm go off by accident?
No. The DiscGuard uses a smart shock sensor: light vibration triggers 3 short warning beeps first, so a passing lorry or a nudge won't set off the full siren. Only genuine tampering escalates it to the full 120dB alarm for 15 seconds. Clever enough to know the difference between the wind and a thief.
How long does the battery last?
Charge it once with the included USB-C cable (about 70 minutes) and it runs for 5–6 months on a single charge. No fiddly batteries to hunt down or replace. A low-battery indicator gives you plenty of warning before it needs a top-up — plug it in overnight and forget about it.
What if I lose the keys?
You get 2 keys with every order — keep one on your keyring and one somewhere safe at home. Lost them both? Like any high-security device, you'd need a locksmith. But honestly, most riders are very careful with the keys that protect a bike worth thousands.
What if it doesn't work for my setup?
Zero risk to try it. Our 90-Day Peace of Mind Guarantee means you can test it properly on your own bike. Doesn't fit? Changed your mind? Email support@trylockt.com and we'll process your full refund, no interrogation. But honestly? Most riders don't send them back — they usually come back to buy a second one for their partner's bike.
Can't find your answer?
Our support team is ready to help.
Simply shoot us an email at support@trylockt.com or use our contact form, and we'll get back to you within 24 hours.
Facebook testimonials
Gary P.
2h ago
Living in Birmingham, you're basically asking for it without proper security. Saw two lads on my Ring doorbell at 3am eyeing up the bikes on my street. The second one gave mine a nudge, the DiscGuard went off like a car alarm on steroids, 3am and the whole street lit up. They properly legged it and didn't come back. Best investment I've made all year.
56
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Dave R.
20d ago
"After my mate's MT-07 got nicked off his drive last week (two lads, angle grinder, gone in under a minute), I wasn't taking any chances. Ordered this straight away. Takes literally 10 seconds to pop on and the alarm arms itself. I actually sleep soundly now knowing that if anyone so much as touches it, the whole street's going to hear about it. If you park your bike outside, you need this.
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Steve H.
15d ago
Our street WhatsApp group has been mental lately with all the bike thefts round here, feels like every week someone's had theirs nicked. Bought a DiscGuard and honestly, half the lads on the street have followed suit now. The road next to us got hit again last night, but ours were all untouched. Thieves want an easy ride, don't give them one!
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4.9 · 2,847 Reviews
James T. Verified
12/03/2026
Fits my Yam FZ25 perfectly, slots right onto the disc no bother. And it's loud, tested it in the garage and it properly screams. Happy with it.
William H. Verified
28/02/2026
Bought this after a mate had his bike pinched. Well made, feels solid, and it fits my Street Triple spot on. Does exactly what it's meant to..
Robert C. Verified
14/02/2026
Decent bit of kit for the money. Alarm's loud and the build feels sturdy. Only knocked a star off because the instructions were a bit brief, but figured it out fine
Thomas B. Verified
03/02/2025
Fits my MT-07 like it was made for it. No wobble, clamps on tight. Chuffed with it to be honest.
George M. Verified
19/01/2025
Ordered it, turned up quick, fits my CB500X no problem at all. Alarm's proper loud and it's small enough to actually carry about. Can't complain.
Sarah L. Verified
11/01/2025
Been using it a couple months now on my GS. Fits perfectly, still on the first charge, and it's survived a fair bit of rain already. Sound product.
Edward P. Verified
28/12/2024
Good lock. Fits my Ninja 650 nicely and the alarm's no joke. Would've liked it in a couple more colours but that's just me being picky. Does the job well.
Charlie W. Verified
15/12/2024
Fits my bike perfectly and it's dead easy to get on and off. That was my main worry ordering online but no issues at all. Quality's better than I expected.
Arthur N. Verified
02/12/2024
Honestly a well thought out bit of gear, alarm's loud enough to wake the street, and it's small enough that I actually take it with me. That was always my problem before.
Margaret F. Verified
18/11/2024
Does what it says. Fits my Bonneville nicely, feels well built, and the free lanyard's a handy touch so you don't ride off with it on. Solid buy.