Tested: Pragmasis 22mm chain and RoundLock review

John Milbank, BikeSocial Consumer Editor
By John Milbank
BikingMilbank BikeSocial Consumer Editor, John owns a KTM 1050 Adventure. He's as happy tinkering in the workshop as he is on twisty, bumpy backroads, and loves every bike ever built (except one). He's bought three CBR600s, two Ducati Monsters, several winter hacks, three off-roaders, a supermoto pit bike, a Honda Vision 50 and built his own custom XSR700. 


Date reviewed: September 2018 | Tested by: John Milbank | Price: £249.95 (1.5m) | Weight: 20.17kg (1.5m) | https://securityforbikes.com


The new Pragmasis 22mm short-link chain is an extremely heavy-duty piece of kit designed predominantly for home use, with a tough sleeve zip-tied at either end to help protect your paint. The chain is rated to Sold Secure Motorcycle Diamond – the top level – and has a pair of extremely thick plates at either end that only accept Pragmasis’ ingenious RoundLock, supplied as part of the package.

The RoundLock simply slots together, providing a very difficult to attack form that doubles as a disc lock for even better value. It’s approved to Sold Secure Motorcycle Gold, and has proven itself in other tests of Pragmasis kit.

The lock comes with three keys, which can also be keyed alike to other RoundLocks, or the company’s D-locks for a small charge.


Tested: Pragmasis 22mm chain and RoundLock review


Size and weight

The chain is available in lengths from 1.0m to 3.0m in 0.5m increments, making the entire package cost between £199.95 and £419.95; just keep in mind that the 1.0m will be too short for use with most bikes and a ground anchor. Also know that you’ll need to ensure your anchor is large enough to accept this chain.

Rolled up, the 1.0m chain covers a diameter of around 28cm and weighs 14.06kg, meaning the 1.5m chain (our testing standard) weighs approximately 19.65kg. The RoundLock weighs just 530g, making it extremely easy to carry when you’re out with the bike.


Resistance to attack: chain

As a short-link chain, the Pragmasis 22mm cannot be linked through itself to shorten it – this can be important to keep it off the ground and prevent a sledge hammer attack, but here it’s irrelevant; even with freeze spray we were unable to do anything more than dent the surface.

Unsurprisingly, bolt croppers are useless against the Pragmasis – it won’t even fit in the jaws of the largest 42mm tool.

Beyond an oxy-acetylene torch, an angle-grinder is the only real way to attack this chain; it took us 47.36 seconds using a mains-powered angle-grinder with a 1.2mm cutting-disc. Using a battery-powered grinder is more time-consuming due to the lower speed, so while it’d still be possible to cut the chain, it’d be a very attention-grabbing, relatively slow process.


Resistance to attack: padlock

The RoundLock is held very tightly between the two plates, so there’s no space to get in and attack the large locking pin.

One area we identified as a possible weakness was the fact that the plates aren’t designed to roll all the way over each other where the two ends of the chains meet – by hammering them over one another it put a huge force on the lock as the two plates tried to pull apart. With repeated, noisy hammering on an anvil, we got the plates completely over and around. But still the lock wouldn’t let go. It did bend, and wouldn’t open again, but we could not break it this way.

Bolt croppers are useless on this lock, and an angle grinder attack is very time-consuming; even given the relatively long period needed to cut the chain, it’s still quicker than attempting to cut this disc lock off.

We also tried drilling the barrel out of this lock, but with no success – the drill bit simply snapped off inside.


To understand how best to use your lock, click here




Product: Pragmasis 22mm  and RoundLock

Size tested: 1.5m

Weight as tested: 20.17kg

Rolled diameter: 28cm (1.0m)

Bolt cropper attack: Unbroken – GOOD

Sledge hammer attack: Unbroken – GOOD

Angle grinder attack: 47.36 – OUTSTANDING



At the time of writing, this is one of the toughest chain and locks we’ve tested. The only combination that matches its level of security is Pragmasis’ own 22mm chain with a long end-link and Squire SS80 padlock.

While of course it can be cut – eventually – with an angle-grinder, the short links make attack more awkward than longer links. Of course, that makes it heavier, but this product is designed for use where the highest levels of security are vital.

The RoundLock is an incredibly simple yet very effective lock that helps keep the price of the overall package down, while increasing the value by also being an extremely effective disc lock.

If you want the very best protection you can buy for your bike, the Pragmasis 22mm comes very highly recommended.


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


Ratings explained

Bolt cropper

Up to one minute = Poor

Over one minute = Average

Unbroken = Good

Sledge hammer

Up to one minute = Poor

Broken in more than a minute = Average

Unbroken = Good

Angle grinder

Up to 12 seconds = Poor

Up to 20 seconds = Average

Over 20 seconds = Good


Find out how and why we did this test

Consumer editor John Milbank explains how you can get the best out of your chain and lock, and how this test was done

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