Joined in 2023 
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63 About this deal
Just to drive this point home, the 8020 Mastiff offers you the same practical level of protection as the 7 mm Kryptonite Keeper or the 6 mm Hiplok Lite.
So get the shortest length that you need to secure your bike. You can use a length of rope to work that out if necessary. I think the Smash Labs review was just a write up of Hal Ruzal video. I could be wrong though, I can’t remember it that well. Much better to get your bike covered under your house insurance or take out specialist bicycle insurance instead. OnGuard 8020 Mastiff Review SummaryThe Superbright version also has the added benefit of keeping you visible at night, so is a great option for commuters.
If it works for you, that’s great. It’s such a beefy chain that most thieves aren’t even going to try to mess with it.Secondly, because you can wrap them around your seat post or top bar, they can be easier to transport. Firstly, because they're relatively long and flexible, you can secure your bike to a wider range of objects. So if you're high risk, which should it be: Gold or Diamond? Well the truth is: it's a bit complicated at the moment! They both come in a variety of lengths. But I recommend you go for the shorter chains and wrap them tightly around your top tube rather than using longer chains to secure your wheels as well. They’re made from a series of hardened steel chain links, and the chain is usually covered in a protective sleeve made from nylon or kevlar to prevent cutting. This sleeve also keeps the chain clean and prevents it from scratching or damaging your bike.
The 1060’s 10mm (9.9mm) hexagonal chain links will protect your bike from small to medium-sized bolt cutters, a standard weapon of choice for bike thieves. Be aware though, registering directly through OnGuard is for US customers only! How secure is the OnGuard 8020 Mastiff?
But I don’t want to pay this much money and carry this much weight around, in return for psychological protection alone!
We would always recommend shopping around as you can usually level up on the Sold Secure rating for similar pricing if not a bit more, for added protection. The 8020 weighs 6.28 lb (2.85 kg). That’s the equivalent of 7.5 cans of coke. So while it’s perfectly possible to carry this chain around every day, it is very heavy. And you’re really going to notice that weight whether you sling it over your shoulders or wrap it round your frame! Is the OnGuard 8020 Mastiff easy to use? But my main point stands: if a 10 mm chain is only getting a Bronze rating, there’s something wrong with it. At the moment Kryptonite make two versions of the Kryptolok. The Series 2 is the original and is rated Sold Secure Silver. The New-Uis well, new(!) and is Sold Secure Gold.
D Locks
If you only use it to secure your frame (tightly wrapped around your top tube), you can keep the chain shorter (and lighter). And even more significantly: it will be further from the ground so it will be much harder for a thief to crop it. They use inside information from the police and insurers to keep their tools and methods up to date
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