OnGuard 8020 Mastiff Chain Lock: Abus Alarm Box 2.0+ with Adaptor Chain: Seatylock Foldylock Compact: Kryptonite Evolution 790 Folding Lock: RockyMounts Hendrix: Tex Lock Eyelet: ...

Along with D-locks (also known as U-locks), they are among the best bike locks you can buy, with many offering a high-security level. But while a D-lock has a rigid shackle, a chain lock is much ...

The lock folds up to fit in your hand or and can be securely mounted in a smaller area of your bike with the included holster, yet it still gives you the adaptability of a chain to lock around or ...