A disc lock is one of the best motorcycle security devices. They’re cheap, portable and easy to use.
Sure, they’re not perfect and even the best disc locks can be defeated. But they’re a great additional layer of security that instantly rules out a proportion of motorcycle thieves who’d rather move on to the next bike with no locks and take that on instead.
Of course, you don’t need to use six disc locks as I have on my ZX-10R pictured above. In fact, using more disc locks doesn’t necessarily result in a linear improvement in security as some motorcycles are lifted into vans with the locks intact. If you’re leaving your bike outside overnight, there comes a point where you’ll have to secure your bike to something, whether that’s a railing, lamp post or ground anchor.
While lots of disc locks aren’t important, where you place your disc lock can have an impact on its effectiveness.
Oxford make a huge range of disc locks to cater for all budgets and the Monster is a solid option. The 11mm hardened steel shackle will deter chancers and put-off the majority of bike thieves while the wide aperture makes it easy to fit to your disc or use it in conjunction with a chain.
The top level of protection from security experts Abus. At the heart of the Granit is a 13mm locking bolt that slides out to allow easy fitment to your bike’s brake disc. The body of a lock is solid but rubber coated to protect your bike. At 780g it’s a lot of metal and it is quite pricey but it’s a massive deterrent to thieves.
Even a cheap disc lock is better than no disc lock. It takes just seconds to snape the steering lock of an otherwise unlocked motorcycle or scooter and push it away.
The cheapest disc lock we could find was this Bike It Micro Disc Lock. It gets great ratings but don’t expect any miracles from this lock, the chances are it can be smashed to pieces with a couple of blows from a club hammer but lots of thieves don’t want to carry any tools and they’ll just look for bikes with no locks at all. So while we couldn’t recommend this disc lock, it’s definitely better than nothing.
Cheap locks are – in the main – a false economy. Think about the value of your bike and the hassle caused if it gets stolen. Is it really worth saving £20 and buying a lesser-quality lock?
If you are strapped for cash, here are two great options: the Xena X1-Y disc lock which features a concealed 6mm pin and the Oxford Boss disc lock which is a mini D-type lock with a beefy 12.7mm shackle. At under £30, they’re both strong locks and good visual deterrents.
If ‘money ain’t a thang’ then Abus have got a disc lock for you. Those crafty Germans have produced the 8008 which has an RRP just shy of £200 but you can find it online for much cheaper.
It is a quality bit of kit. Featuring a massive 16mm locking bolt made from hardened steel. In fact, the whole body is made from hardened steel and the 8008 also features a lock that’s almost impossible to pick and a 120dB alarm which arms when it senses a brake disc but not when it’s being transported.
The alarm is sensitive which has scored it a few negative points from owners but the plus side is that it’s practically impossible to ride off with the 8008 still fitted to your disc due to the sensitivity of the alarm.
No matter what they are made from, disc locks are a great visual deterrent, instantly eliminating the least capable bike thieves. However should they be attacked, they need to be able to put up a decent fight. Here's a list of things to consider when buying a disc lock.
Scooters tend to have smaller brake discs and smaller holes through which to secure a lock. Fortunately, there’s a range of disc locks designed for scooters and the majority of these have a pin size that’s 6mm or smaller meaning they will fit a scooter.
Even though this pin is smaller than the average motorcycle disc lock, most scooter-specific disc locks are designed so that the pin is recessed and protected from attack by a chunkier lock body.
Scooters are great city transport and that often means owners park their scooter on the street, rather than a garage and they park them at a home location overnight but a different location during the day. That’s why we’ve focused on disc locks that come with alarms, as an alarm is a great deterrent to any would-be scooter thief.
In no particular order here are five great options for scooter riders:
Don’t forget to grab a disc lock reminder cable to help prevent the embarrassing 3mph spill if you try to ride away with your lock attached.
Sold Secure has 2 levels of Motorcycle Security Approval (Gold & Diamond) and two levels of Motor Scooter security (Gold & Silver). A recent change has seen the introduction of a machine based cropping test to 70kN to ensure consistency.
Locks are submitted to Sold Secure and manufacturers pay to have them tested. The tests are carried out using a toolkit based on insurance and police information. If a lock can withstand an attack for a given duration, it is awarded a Sold Secure rating.
Thatcham used to test locks with a similar rating system to Sold Secure but as of January 2019 they have ceased to test motorcycle locks and so you should see these ratings slowly disappear from manufacturer’s promotional material.
Get a disc lock reminder cable so you don’t try and ride away with your disc lock still on.
If you ride a scooter the chances are you’ll need a disc lock with a 6mm or smaller diameter pin.
Lock it to the disc’s most central point in between the fork leg and the brake caliper if you can, to prevent the disc easily being cut.
Thieves really don't like alarms, so if you can find an alarmed disc lock to suit your budget, it's worth going for.
Security approvals can reduce insurance premiums.
There are hundreds of disc locks on the market, so it’s hard to know which one to go for. We’ve picked our top two best motorcycle disc locks above but here are five other worthy contenders that were on our shortlist.
Oxford Boss 16mm – Ultra-strong 16mm shackle, Sold Secure rated, shock-resistant body.
Kryptonite Evolution Premium – Highly visible quality lock with 14mm shackle and reminder cable.
Luma Solido Mushroom – Quality mushroom lock, body can be concealed behind the disc, giving thieves no ability to use a hammer and little purchase for an angle grinder.
Oxford Boss Alarmed Disc Lock – 14mm shackle and a great option if you want a disc lock that will hold a chain too.
Abus Detecto 7000 Alarm – 120dB alarm, one-handed operation, includes carry case.
Can I just use a padlock?
Yes, any lock is better than no lock and the right padlock will be just as good as a disc lock. The benefit of a padlock is that it can also be used with a chain (when you’re at home) or on its own (when you’re out and about). You just have to ensure the padlock will fit around your disc.
Thanks to the following websites which helped us research and write this motorcycle disc lock guide:
How to properly lock your scooter:
Sold Secure approved product brochure: