Compact High-Security U-Lock for City Streets The Kryptonite Evolution Mini-5 U-Lock is a compact, high-security lock designed for serious urban use. Its shorter 3.25" x 5.5" internal dimension reduces space for thieves to work, while still fitting most commuter, city, and road frames when paired with a secure rack or post. The 13 mm hardened MAX-Performance steel shackle is built to resist bolt cutters and leverage attacks in real-world conditions. A hardened double deadbolt, reinforced crossbar, and high-security disc-style cylinder add layers of protection against twist, pry, and pick attacks. The lock includes three keys (one with an integrated LED) and a frame mount, making it practical to carry every day. For many riders, the Mini-5 is the go-to choice when security matters more than saving a few ounces. Simple. Solid. Reliable. Short 3.25" x 5.5" internal size gives thieves less room for tools while still securing frame and wheel to a rack. 13 mm hardened MAX-Performance steel shackle resists bolt cutters and leverage attacks. Hardened double deadbolt locks both sides of the shackle for improved resistance to twisting and prying. High-security disc-style cylinder is designed to be pick- and drill-resistant. Reinforced crossbar sleeve adds strength at a common attack point on U-locks. Includes three keys, one with an LED light for easier nighttime use. Transit FlexFrame-style bracket (or similar) lets you carry the lock on your bike instead of in a bag.
