I put up with the hassle of owning a car in traffic-jammed Washington, D.C., for a few years. But when I lost my free parking space, I sold the car and made a bike my primary means of transportation.

With a Sold Secure Gold rating, compact design, and accompanying cable lock, the Ultimate 420 makes a clear statement to deter all but the most determined bike thieves. A 13mm shackle made of ...