Is this a good enough chain and lock combo???

Hey, my last bike got stolen from campus when I was using a Kryptonite Keeper standard U-lock. So with my new bike I bought an Abus 10ks 10 mm hardened steel security chain and the Abus diskus 20/70 with hardened steel shackle as well as a steel cable extender by Kryptonite to secure the bike completely (it is fairly expensive).

Is this enough or should I return these and purchase the Abus 12ks 12 mm hardened steel chain and Abus Granit 37/60 for even more protection? I do not want to use U-locks or all in one chain locks. I can get the components that constitute them for cheaper.

 

At that level, it really doesn’t matter. An angle grinder will go through either in less than 30 seconds. And both will take considerable effort to beat with bolt cutters.

 

I have a Kryptonite KryptoLok that I have used whatsapp web 192.168.0.1 routerloginfor many years -- it's a U lock with a combination instead of a key. I've been happy with it, and even left it overnight in moderately concerning (university campus) locations.

 

There isn't a lock made that a battery powered angle grinder with a new carbide blade can't defeat in less than a minute, some will take upwards to minute but most are about 30 second range.

The problem with your situation is you are parking the bike someplace and leaving it unattended and out of your sight for a few hours, that's bad but there's nothing you can do about it either except for one thing, buy a less than $250 used bike and park that instead and save your nice bike for weekend rides! Also park your bike next to more expensive bikes so the thief would move to one of those instead of yours. Make that used bike look beat up, hit the frame a few times with a chain to mar it up, keep it dirty (just keep the components and chain clean to prevent mechanical problems). When you have a bike like that you don't need to spend $100 or more on a lock which saves you money, you won't need to lug around a heavy lock system either which put less burden on the weight you need to carry. At the most you would need is the Oxford OF159 HD chain 9.5mm square link chain that comes with a double locking padlock for less than $40!, but since you already bought a lock system then use that.