AutoGuard™ Disc Lock Alarm

Name: AutoGuard™ Disc Lock Alarm
Brand: AutoGuard
SKU: 54845261971783
Price: 69.99 GBP
Availability: InStock

10,213 Reviews

Ships by

Loved by 100,000+ Riders

DiscGuard Benefits Section

Built for |

Nudge it and you get three warning beeps. Keep going and it screams for fifteen seconds — about as loud as a pneumatic drill.

Scooters, mopeds, 125s, sports bikes and tourers. If it's got a brake disc, it fits.

Slot it over the brake disc, push down, done. No tools, no brackets, no faff.

Roughly 70 minutes on USB-C and it's good for the season. Same cable that charges your phone.

A hardened aluminium body and a solid locking pin. Nothing to snap, nothing to lever open.

Sits out through a British winter and still goes off. Rain, frost, road salt — none of it gets in.

AutoGuard Disc Lock Alarm — Testimonials

THE DISC ALARM
THIEVES RUN
AWAY FROM

Trusted by 100,000+ riders across the UK.

John P.

Motorbike Enthusiast, Manchester

★ ★ ★ ★ ★

"Two bikes went from my street last winter, one of them three doors down. This goes on every time I park up now, takes about five seconds. Someone had a go at it in a multi-storey a few weeks back and the alarm went off — you could hear it across the whole level. Cheapest peace of mind I've ever bought."

Ryan M.

Delivery Rider, Birmingham

★ ★ ★ ★ ★

"I'm on and off the bike forty times a shift, so anything fiddly just wouldn't get used. This slots straight onto the disc and I'm gone. Been out in the rain all winter and it's still going strong. Bought a second one for my mate at the depot."

Sophie H.

Daily Commuter, Bristol

★ ★ ★ ★ ★

"I leave my bike at the station all day and used to spend the whole train home wondering if it'd still be there. Knowing it screams the second anyone touches it has genuinely stopped that. Takes seconds to put on. Wish I'd found it years ago."

Lewis K.

Scooter Owner, London

★ ★ ★ ★ ★

"Had a big chain and lock before. Heavy, awkward, ended up living under the seat because I couldn't be bothered lugging it about. This one fits in my jacket pocket and goes on in seconds. Night and day difference."

Dan W.

Dad of Two, Leeds

★ ★ ★ ★ ★

"Got it for my lad's first 125. Bikes that age get nicked round here constantly for parts. It's simple enough that he actually uses it, which is the main thing. Solid bit of kit for the money."

AutoGuard Disc Lock Alarm — Story Section

Why 100,000+
Riders Made The Switch

The Problem

Your Bike Is
An Easy Target

Two men can lift a 125 into a van in under a minute. The factory steering lock barely slows them down, and a chain through the wheel just gets cut. None of it makes a sound. By the time anyone looks out of the window, the van's already gone.

AutoGuard Disc Lock Alarm being fitted to a brake disc

The Solution

One Click.
Disc Locked, Alarm On.

Slot it over your brake disc and push down. That's it. The wheel physically can't turn, and the alarm arms itself the moment it locks. No brackets, no tools, no faff — about five seconds, which is why it actually gets used. Over 100,000 riders have already made the switch.

Thieves running from a motorbike as the alarm sounds

Built Tough

Ear-Splitting 110dB.
Thieves Nowhere To Be Seen.

The shock sensor picks up the first knock and gives three warning beeps. Keep going and the full 110dB alarm goes off — about as loud as a pneumatic drill, and impossible to ignore halfway down the street. A thief working quietly can't work through that. He leaves.

Us Vs Them

We don't cut corners.

Our disc lock alarm was built to be the best bike security device on the market. No compromises, no weak points.

FREQUENTLY ASKED

QUESTIONS

❓Try It Risk Free

We’re so confident in our AutoGuard™ products that we offer a no-questions-asked 90-day money-back guarantee. Try it risk-free and experience the difference.

🎯 Will It Fit My Bike?

Absolutely!

Yes. There's no bracket to mount and nothing model-specific to line up — the lock clamps over the edge of your brake disc and the pin drops straight through one of the drilled holes. Scooters, mopeds, 125s, sports bikes and tourers, front disc or rear. If your bike has a brake disc, it fits.

🔒 Can It Be Cut Or

Broken Into?

Our disc lock alarm is built from hardened aluminium with a solid steel locking pin, designed to resist hammering, prying and brute force.

But the real defence is what happens when they try. The shock sensor catches the first knock and gives three warning beeps. Keep going and the full 110dB alarm goes off — about as loud as a pneumatic drill, on a quiet street, at two in the morning.

No lock on earth is impossible to defeat given unlimited time and tools. The point is to make your bike more effort than it's worth — and a thief working quietly can't work through that kind of noise. So he moves on to an easier target. That's exactly what our disc lock alarm does.

🚚 How Long Does Delivery Take?

We ship all orders within 24 hours of confirmation.

Delivery typically takes 3–7 business days right to your door

🏍️ Will It Damage My Brake Disc?

No. The clamping faces sit either side of the rotor without gripping it tight, and the pin passes through one of the drilled holes rather than biting into the metal. Fit it, ride nowhere, take it off — the disc is exactly as it was. The one thing to watch is riding off with it still attached, which is what the reminder cable is for: run it from the lock to your handlebars and you can't miss it.

🛡️ Does It Come With A Warranty?

Yes — every AutoGuard product is covered by a

6 month warranty against manufacturing defects. If anything goes wrong with the lock or mechanism under normal use, contact us and we'll sort a replacement.

🔁 How Easy Are Returns?

We’re proud of our product and our customer service.
If for any reason you’re not satisfied, we guarantee a seamless and hassle-free return process.

Try AutoGuard

90 Day Money Back Guarantee

AutoGuard™ Disc Lock Alarm

10,213 Reviews

90 Day Money Back Guarantee

"My mate wouldn't shut up about his so I finally got one. He was right. It goes on in seconds and knowing my bike is completely safe gives me total peace of mind."

Ryan M.

❓ Try It Risk Free

We’re so confident in AutoGuard™ that we offer a no-questions-asked 90-day money-back guarantee.

Try it risk-free and experience the difference.

🏍️ Will It Fit My Bike?

Absolutely!

Yes. There's no bracket to mount and nothing model-specific to line up — the lock clamps over the edge of your brake disc and the pin drops straight through one of the drilled holes. Scooters, mopeds, 125s, sports bikes and tourers, front disc or rear. If your bike has a brake disc, it fits.

🔒 Can It Be Cut Or Broken Into?

Our disc lock alarm is built from hardened aluminium with a solid steel locking pin, designed to resist hammering, prying and brute force.

But the real defence is what happens when they try. The shock sensor catches the first knock and gives three warning beeps. Keep going and the full 110dB alarm goes off — about as loud as a pneumatic drill, on a quiet street, at two in the morning.

No lock on earth is impossible to defeat given unlimited time and tools. The point is to make your bike more effort than it's worth — and a thief working quietly can't work through that kind of noise. So he moves on to an easier target. That's exactly what our disc lock alarm does.

🛡️ Does It Come with a Warranty?

Yes — every AutoGuard product is covered by a 6 month warranty against manufacturing defects.

If anything goes wrong with the lock or mechanism under normal use, contact us and we'll sort a replacement.

"Definitely the best bike security device we have tested."

we have tested."

"Everyone needs one of these

in their lives."

"After a few weeks of testing, we didn’t expect it to be this good"

expect it to be this good."

What Makes AutoGuard

🚨

110DB Alarm

⚡

On In Seconds

🏍️

Fits All Bikes

🔋

6 Month Battery

Our Stats So Far

+100,000

ORDERS DELIVERED

94.5%

LOVE AUTOGUARD

94.5%

WOULD RECOMMEND

98.4%

FELT MORE SAFE

AutoGuard Disc Lock Alarm — Testimonials

REAL TALK.
REAL CUSTOMERS.

Trusted by 100,000+ riders across the UK.

John P.

Motorbike Enthusiast, Manchester

★ ★ ★ ★ ★

"Two bikes went from my street last winter, one of them three doors down. This goes on every time I park up now, takes about five seconds. Someone had a go at it in a multi-storey a few weeks back and the alarm went off — you could hear it across the whole level. Cheapest peace of mind I've ever bought."

Ryan M.

Delivery Rider, Birmingham

★ ★ ★ ★ ★

"I'm on and off the bike forty times a shift, so anything fiddly just wouldn't get used. This slots straight onto the disc and I'm gone. Been out in the rain all winter and it's still going strong. Bought a second one for my mate at the depot."

Sophie H.

Daily Commuter, Bristol

★ ★ ★ ★ ★

"I leave my bike at the station all day and used to spend the whole train home wondering if it'd still be there. Knowing it screams the second anyone touches it has genuinely stopped that. Takes seconds to put on. Wish I'd found it years ago."

Lewis K.

Scooter Owner, London

★ ★ ★ ★ ★

"Had a big chain and lock before. Heavy, awkward, ended up living under the seat because I couldn't be bothered lugging it about. This one fits in my jacket pocket and goes on in seconds. Night and day difference."

Dan W.

Dad of Two, Leeds

★ ★ ★ ★ ★

"Got it for my lad's first 125. Bikes that age get nicked round here constantly for parts. It's simple enough that he actually uses it, which is the main thing. Solid bit of kit for the money."

Us Vs Them

We don't cut corners. Our disc lock alarm was built to be the best bike security device on the market, period.

Secure More

100,000+ Orders

AutoGuard™ Disc Lock Alarm

10,213 Reviews

90 Day Money Back Guarantee

❓ Try It Risk Free

We’re so confident in our AutoGuard™ products that we offer a no-questions-asked 90-day money-back guarantee.

Try it risk-free and experience the difference.

🏍️ Will It Fit My Bike?

Absolutely!

Yes. There's no bracket to mount and nothing model-specific to line up — the lock clamps over the edge of your brake disc and the pin drops straight through one of the drilled holes. Scooters, mopeds, 125s, sports bikes and tourers, front disc or rear. If your bike has a brake disc, it fits.

🔒 Can It Be Cut Or Broken Into?

Our disc lock alarm is built from hardened aluminium with a solid steel locking pin, designed to resist hammering, prying and brute force.

But the real defence is what happens when they try. The shock sensor catches the first knock and gives three warning beeps. Keep going and the full 110dB alarm goes off — about as loud as a pneumatic drill, on a quiet street, at two in the morning.

No lock on earth is impossible to defeat given unlimited time and tools. The point is to make your bike more effort than it's worth — and a thief working quietly can't work through that kind of noise. So he moves on to an easier target. That's exactly what our disc lock alarm does.

🛡️ Does It Come with a Warranty?

Yes — every AutoGuard product is covered by a

6 month warranty against manufacturing defects. If anything goes wrong with the lock or mechanism under normal use, contact us and we'll sort a replacement.

FREQUENTLY ASKED

QUESTIONS

❓ Try It Risk Free

We’re so confident in our AutoGuard™ products that we offer a no-questions-asked 90-day money-back guarantee.

Try it risk-free and experience the difference.

🏍️ Will It Fit My Car?

Absolutely!

Yes. There's no bracket to mount and nothing model-specific to line up — the lock clamps over the edge of your brake disc and the pin drops straight through one of the drilled holes. Scooters, mopeds, 125s, sports bikes and tourers, front disc or rear. If your bike has a brake disc, it fits.

🔒 Can It Be Cut Or

Broken Into?

Our disc lock alarm is built from hardened aluminium with a solid steel locking pin, designed to resist hammering, prying and brute force.

But the real defence is what happens when they try. The shock sensor catches the first knock and gives three warning beeps. Keep going and the full 110dB alarm goes off — about as loud as a pneumatic drill, on a quiet street, at two in the morning.

No lock on earth is impossible to defeat given unlimited time and tools. The point is to make your bike more effort than it's worth — and a thief working quietly can't work through that kind of noise. So he moves on to an easier target. That's exactly what our disc lock alarm does.

🚚 How Long Does Delivery Take?

We ship all orders within 24 hours of confirmation.

Delivery typically takes 3–7 business days right to your door.

🤬 Will It Damage My Brake Disc?

No. The clamping faces sit either side of the rotor without gripping it tight, and the pin passes through one of the drilled holes rather than biting into the metal. Fit it, ride nowhere, take it off — the disc is exactly as it was. The one thing to watch is riding off with it still attached, which is what the reminder cable is for: run it from the lock to your handlebars and you can't miss it.

🛡️ Does It Come with a Warranty?

Yes — every AutoGuard product is covered by a 6 month warranty against manufacturing defects.

If anything goes wrong with the lock or mechanism under normal use, contact us and we'll sort a replacement.

🔁 How Easy Are Returns?

We’re proud of our product and our customer service.

If for any reason you’re not satisfied, we guarantee a seamless and hassle-free return process.

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