There are quite a number of bicycle locks available on the market nowadays, but one of the best we’ve seen comes from InterLock, who won a Eurobike award in 2014 for their Crosstown Post Bicycle Lock.
This innovative lock hides inside of your bike. It’s easily installed by simply replacing your old seat post with it. The lock is fully integrated so that even if someone removes the seatpost from the bike, your bike cannot be stolen. The seatpost is 3D forged with 6061 aluminum. Used in conjunction with a U-Lock, it’s the ultimate security system for your bicycle. The cable cleanly stores away, so all you would need to carry is a U-Lock. The lock comes in black or silver. It’s available now starting at $50. [Purchase]