Abus 8077 2.0 Granit Detecto XPlus review | Alarmed disc lock

Date reviewed: February 2026 | Tested by: John Milbank | Price: £170 (RRP) | Weight: 934g (3.9kg chain) | www.abus.com/uk

The Abus 8077 2.0 Granit Detecto XPlus on review here is a refresh of the original 8077 that we destruction tested back in 2020. A solid piece of security that automatically arms and disarms as you put it on the rotor, this disc-lock can also be used with an optional noose-end chain, which can help you tether the bike to something solid, reducing the chances of it being lifted into a van.

The Abus 8077 is certified to Sold Secure Powered Cycle Gold, which means it’s undergone a series of attack tests by the independent body, but it’s important to understand that this category does not include an angle-grinder test (only the Diamond levels include this). Our testing does include it…

Abus 8077 size and weight

Weighing 934g, the Abus 8077 2.0 measures 112mm long, 40mm wide and 61mm deep, with a 14mm locking pin. Abus lists it as 19mm, but that’s at its widest point, not across the full length of the pin.

The isn’t a cheap zinc lock – the cast body is hardened steel, making it surprisingly resistant to attack, and the Abus fits easily onto a BMW R1250GS, Honda VFR800, Kawasaki ZX-6R and a Triumph Tiger front wheel, but it’s not long enough to reach into the rotor carrier, which can make it a little harder to remove by cutting the brake disc.

A pouch is supplied with the 8077 that can help prevent it damaging other items while in your luggage, and an optional £54.99 SH8077 bracket allows you to clamp it to the bike, though keep in mind that there’s no protective cover over the lock’s keyway, so dirt and grime could get in there when riding.

Abus 8077 alarm

The Abus 8077’s alarm has one of the most simple arming systems I’ve used – just slide it onto the disc and it’s ready to go thanks to the semi-spherical switch mechanism. However, this does mean that it can’t be fitted in a disarmed state, which is a consideration if you want to have it on the bike while it’s transported in a van or on a trailer.

At 100dB, the 8077 isn’t as loud as some others – it should get your attention if nearby, but it’s not uncomfortably ear-piercing and even a battery-powered drill can drown it out. The biggest benefit of this alarm – compared to others I’ve tested – is that it’ll remind you not to ride off with it fitted, and should dissuade casual thieves or anybody repeatedly fiddling with the bike. In my testing, movement from wind wouldn’t trigger it, but sustained vibration and knocks to the bike did.

Powered by a pair of AAA batteries, you’ll be able to pick up replacements very easily. Removing the alarm module is as fiddly in this 2.0 version as it was in the previous model, requiring two screwdrivers to lever the plastic latches inwards and slide it out. In my experience of the older model you won’t need to change the batteries very often at all.

I left the 8077 out in the storms of early 2026 and confirmed that the alarm is fully weatherproof, and not in any way affected by heavy rain.

Abus 8077 chain

The Abus 8077 is available as a bundle with the 12KS noose (or loop) chain for £230, or you can buy the hardened steel chain on its own for £85 – just make sure you get the variant designed for the 8077 lock (part number 746074). I found it available to order from Infinity Motorcycles.

The chain’s links measure a minimum of 11.8mm thick, while the noose loop is 14mm in diameter and the specially cast and hardened end-piece, which attaches to the lock’s pin, is 17mm thick.

Weighing 3.9kg and 1.2m long, the chain will coil up to a diameter of about 20cm, so might fit under some seats if you’re lucky, but will go in most luggage and tank bags. Never carry any lock or chain in a rucksack or in your pockets.

Noose-end chains are a fantastic design as they allow a much greater working length. A ‘normal’ chain reaches only up to half its length as the two ends have to be joined, but a noose-chain (which is more expensive to produce due to complications in effective hardening and a specific length being required) passes through the larger loop at the end, meaning it only doubles up around the anchor / fence / lamp-post that it’s tied to. From there, only a single length needs to go to the lock.

Once the chain’s attached, the 8077 lock is even harder to attack thanks to how the pin is protected, and a thief won’t be able to lift the bike into a van without tools to attack the chain.

Resistance to attack: lock picking

 While some YouTube channels might make lock picking look easy, especially when selling the creator’s own tools, it’s not a theft method used in typical motorcycle thefts at all. Specialist tools are increasingly made available to the public, but it’s in the interest of these creators to portray them as simple to use. The fact is that UK motorcycle thieves are not spending the time and effort on lock picking.

Sold Secure is part of the Master Locksmiths Association, and while I’m not able to pick locks with any skill, this independent testing body is. Where locks have vulnerabilities, they will not be certified.

To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.

Lock resistance to attack: drill

Attacking the 8077 with a cobalt drill bit, I was unable to cause any significant damage thanks to the tough lock barrel’s components

To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.

Lock resistance to attack: prying & splitting

Even using a four-foot-long crowbar, I was unable to do anything more than set the Abus 8077’s alarm off. This is an extremely secure device thanks to the hardened steel body and the design of the locking pin, which ties the two sides together.

To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.

Lock resistance to attack: lump hammer

A sustained and aggressive lump-hammer attack did nothing more than mark the outer casing of the Abus 8077, the pin and body holding up extremely well.

The alarm did trigger, but unfortunately didn’t continue to sound during the hammering. As it kept resetting, it seems likely that the batteries bounce within the module and momentarily break connection.

The noise of the hammering is louder than the alarm itself, though it’s likely to continue sounding after the criminal stops, which might help draw attention.

To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.

Lock resistance to attack: reciprocating saw

It is possible to cut the Abus 8077’s pin with a reciprocating saw and remove the lock, and it’s a quicker method than with an angle-grinder when using an expensive tungsten-carbide-tipped blade, but this form of attack is extremely unlikely, despite social media ‘experts’ claiming that thieves are running around with Sawzalls; an angle-grinder is by far the most favoured – and versatile – tool in the typical UK thief’s arsenal.

To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.

Lock resistance to attack: angle-grinder

The thickest part of the Abus 8077’s pin is 19mm, but the upper section – which is the most exposed when fitted to the bike – is 14mm. While I won’t give away the exact techniques for defeating a lock, in testing I was able to get the lock off with one cut, but this was only possible on my test wheel, which isn’t attached to any fork legs. Accessing the pin is very difficult in a real-world theft scenario as you can’t get the right angle with the grinder, leaving the Abus’ hardened steel body as the most viable attack point. Due to the thickness of this, while it can be defeated, it takes significant time and the disc itself would be easier if a thief was willing to attack it.

With the optional chain fitted the 8077 is even harder to attack, the body putting up a good level of resistance.

Ultimately, the weakest point of the Abus 8077 in an angle-grinder attack is the brake disc itself, and this lock isn’t long enough to reach into the rotor carrier, which can make them harder still to remove. Thieves won’t always cut the disc, especially as it can jam against the caliper to stop the bike being pushed away, and data from our insurance customers shows that disc-locks can reduce the chances of theft by a factor of three, so they certainly have their place.

To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.

Chain resistance to attack: bolt-croppers

A 12mm chain is on the limit of what can be cut with even the largest bolt croppers (which I use in testing), but the Abus 12KS chain survived with just a dent in the link, despite my full weight bouncing on the end of the croppers.

To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.

Chain resistance to attack: sledge hammer

Sledge hammer attacks are extremely unlikely due to the noise they make, the space needed and the difficulty in getting a good strike. They’re also defeated by making sure the chain stays off the ground.

Using a length of railway track as an anvil, a sustained sledge-hammer attack eventually broke the weld on a link and left some cracks on the case-hardened surface, but the through-hardening provided the right degree of ductility to not see the chain defeated.

To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.

Chain resistance to attack: angle-grinder

The links are the most vulnerable point of attack due to being thinner than the noose and the attachment point at the other end. Using quality cutting discs and with the right technique, a chain like this is relatively quick to cut if you can hold it properly, and the Abus performs as expected.

If a thief is equipped with an angle-grinder, a portable chain tends to be the easier part of a security setup to defeat, but it’s still a significant, noisy and attention-grabbing attack.

To see how this compares with the other locks we’ve tested, check out our best motorcycle locks for home and away.

Bennetts BikeSocial test results

Product: Abus Granit Detecto XPlus 8077 2.0 alarmed disc-lock

• Weight as tested: 934g

• Drill attack: PASS

• Prying attack: PASS

• Lump hammer attack: PASS

• Reciprocating saw attack: PASS

• Angle grinder attack: PASS

Product: Abus 746074 12KS chain for 8077

• Weight as tested: 3.9kg

• Bolt-cropper attack: PASS

• Sledge hammer attack: PASS

• Angle-grinder attack: PASS

To see the other chains and locks tested by Bennetts BikeSocial, click here.

Abus Granit Detecto XPlus 8077 2.0 review: Verdict

You needn’t worry about picking up an old version of the Abus Granit Detecto XPlus 8077 by mistake, rather than the newer 2.0 (it says 2.0 on the box, but II on the website) as they offer the same level of protection in testing, and appear to have the same alarm module.

The street price is hovering around £130 at the time of writing, or £230 as a bundle with the chain. Or £85 for the chain on its own, so that might be your best bet.

I’ve tested louder alarmed disc locks, but the ability to combine this one with a chain might swing it for some buyers. Just be aware that – while not something all thieves will do – cutting the brake disc itself is the weakest point of attack for most disc locks, especially those that can’t reach into the rotor carrier.

Overall this is a very good disc-lock with a valuable optional chain. I just wish the alarm was louder.

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