ABUS U-Lock Granit XPlus 540, Bike Lock with XPlus Cylinder, High Protection Against Theft, ABUS Security Level 15, Black/Grey

I was very impressed when I got this. It feels incredibly solid. A word of caution to consumers, its heavier than you think it is. Also, do yourself a favor and buy the one with USH connector. I got mine mounted on with 3 Velcro strap in the frame of my bike.

Awesome lock, my bike has not been stolen so far.

Seems like a solid enough lock. The real test is to see if somebody opens it and steels my bike.

Just what I wanted,

Bike mount is NOT included in price!! Costs an extra ~25usd.

I bought an extra set of keys and carry 2 keys on me at all times.

Very heavy duty

It works great, I use a Velcro tie down strap, to help hold it, and keep it from rattling,

Get this if your bike is worth it