Updated: Torc Maxi Shackle review

Thief-defying bike anchor

Our rating 
4.0 out of 5 star rating 4.0
GBP £42.00 RRP | USD $61.59
Pragmasis Maxi Shackle

Our review

It isn’t a ground anchor, but it offers great value theft protection if you don't have a concrete floor to lock to
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Torc make one of the best ground anchors available but have realised that not everyone will have a concrete floor to lock it to. So the Maxi Shackle was designed to offer a decent level of security when fastened to either a block wall, gatepost or similar.


It takes the form of a long plate with a U-shaped bulge welded firmly to it and has four holes that enable you to fit the shackle to an immovable object. The kit comes complete with the fitting of your choice – Liebig Safety Bolts for walls, through-fitting all thread studs or even a chemical resin mounting kit.

The Shackle’s opening is 50x50mm, widening to 80mm. That’s big enough to take most chains. The plate steel is very resistant to cutting and the combination of long bolts with resin capsule fittings and the long base plate make the Maxi Shackle extremely strong.


We threaded a chain through and swung it around, trying to get the Shackle to pull away from the wall. It didn’t budge at all. If you don’t have the option of fitting a ground anchor then the Maxi Shackle is pretty much the next best thing. We’d advise installing it in a place where your bike obscures it, which should make it even more difficult for a thief to attack.

Product Specifications


Name Maxi Shackle (10)
Brand Pragmasis

Description * Ideal for securing medium to high value bicycles and landscaping/gardening equipment * Ideal for equestrian applications - Combat the growing threat of horse theft and tack theft! * Designed for easy DIY installation * Uses a wide fitting to cover a large area of the wall/post/etc * Hardened steel and welded construction * Difficult and noisy to attack - Deters thieves * Big enough to take heavy duty chains as well as U-locks and cable locks - The opening measures more than 50mm x 50mm (the sloping sides are a minimum of 50mm apart, widening to beyond 80mm) * Sold Secure Approved * British design and manufacture - Support British industry! * Fitting kit includes all parts required * About 30 minutes to fit - Easy-to-follow and thoroughly illustrated instructions are included.
Weight (g) 2500