Kryptonite have made bicycle security hardware since the 1970s and are one of the few lock brands with genuine recognition among riders. The Evolution Mini-7 listed here is a hardened U-lock supplied with a KryptoFlex cable, letting you secure the frame and rear wheel with the shackle and loop the front wheel in with the cable. Locking matters more with an electric bike than a conventional one, simply because the bike is worth more and the battery makes it a bigger target.