Mammoth Security Shackle Disc Lock
Customer Product Reviews
Can't fault it
It's a good solid lock. It's heavier than it looks, and feels sturdy. It only just fits on the front disk of my Z900RS, but that's because I hadn't measured the disk's thickness, width, or the dimensions of the holes, before I bought the lock. oops! Even in its carry pouch, with lanyard, it wedges nicely under the seat (taking the only available piece of space once the toolkit's come out - well...). I particularly like the sliding cover over the keyhole - I doubt it's watertight, though, but it'll keep the muck out. All in all, I'd recommend it (especially for the price).
Mammoth by name mammoth by nature
Sturdy lock that was a lot bigger than what I expected. So much so that it wouldn't quite fit comfortably under the passenger seat of my MT 07. That said it can still be squeezed in as long as you're not fussed about having the black metal plate back in position before putting the seat back on. Reminder cable bright and colourful to stop you making a fool of yourself. All in all a good product so far.
It doesn't fit on the front disc of my 2019 Z1000SX, but it does go around the wheel spoke so not a total loss. I am at the moment trying to store it in the seat compartment but with the tool bag and puncture repair kit but with no success. The quality of the lock however is good and should keep the crooks at bay for some time.
Fits my ER6F front disk just and the day glow reminder, have the big chain too, good products. No room under my seat as its full already so have to carry in the backpack. Those looking for a disk lock but unsure give it a go, if not satisfied send it back.
Fits GSX S1000 but only just
Have purchased mammoth products before so was already aware of the good quality. Only just fits my bike but then that's all it needs to do. Comes with pouch and fits neatly under the GSX S pillion seat along with the disc lock reminder coil. Which incidentally is just long enough.
Good solid lock
Solid lock and easily fits on the front disc of my Transalp. I did read the description of the lock but was still surprised at how heavy it is ( about 750g, that's over 1lb in old money) and it is about the same size as an average shampoo bottle so won't fit in your pocket like my old disc lock. Having said all that I'm still pleased with it.
Easy to use but useless against angle grinder
This is the best value disc lock with Thatcham approval that I could find and I had no problems getting it on the bike. However less than a week after it went on, someone with an angle grinder removed it in a couple of minutes when the bike was in an underground car park. Fortunately their getaway was blocked and I didn't lose the bike. I then researched a 19 mm thick armoured chain and Squire padlock, only to discover NOTHING will protect you against an angle grinder. I realised the solution was to park the bike close to the car park entrance where the noise of an angle grinder could be heard outside. Fitted the 19mm chain & Squire padlock around the bike and a concrete pillar because even an angle grinder would take 5 minutes to get through it, and bought another of these disc locks as a deterrent for those times when I'm out shopping and the bike is in full view. No-one's had a go at it yet (which is why I can only give it an average) and the yellow spiral cord is a great reminder to remove it before you ride off. As long as you recognize the shortcomings of a disc lock, this is a good value Thatcham approved lock.
Solid, if you can get it on
Very solid lock, but not easy to get on my Sprint ST - it pushes against the wheel when locked on, and I'm a bit concerned about this putting pressure on the disk. Also, the reminder cable is a waste of time, unless you're on a mini-moto.