These U-Locks on Amazon Will Help You Secure Your Bike in Seconds

When it comes to protecting your bike against would-be thieves, it doesn’t get much better than the U-lock. Though they’re technically just a padlock with longer shackles, U-locks excel in bike safety where smaller padlocks can’t; with U-locks, you can protect your bicycle’s frame by directly securing it to a post or rack rather than feeding a fragile cable lock or chain through your bike’s wheels. U-locks are tougher and harder to beat with most hand tools, and thieves will have a more annoying time when trying to cut through one versus something smaller.

If you’re looking for a smart way to secure your bicycle, reach for a U-lock that’s lightweight, made of hardened steel, and features double deadbolts. Need that protection in a jiffy? Consider grabbing one of these durable U-locks from Amazon for some safety that’ll ship fast

The Best U-Locks for Bicycles

What to Consider

A reliable U-lock—also known as a D-lock in the U.K.—is fairly heavy and durable, and usually is made of hardened steel. Reach for U-locks that have double deadbolts, which lock the shackle into both ends of its crossbar, forcing thieves to make two cuts instead of one. You should always lock your bike by the inside of its rear triangle, halting the back wheel from movement and thus preventing someone from trying to remove it. Buying a second U-lock isn't a bad idea either, as you can use it to lock your bike's front wheel and frame together.

How We Evaluated

To find the best U-locks on Amazon, we referenced various competitor websites and message boards to find the most frequently recommended products in regards to safety, weight, durability, and value. We also consulted our own gear-testing guide to the best bike locks and made mention of various U-locks found there, such as the Kryptonite New York Standard and the Hiplok Spin. We prioritized listing products that have double deadbolt designs, as well as those that Amazon reviewers cited as being tough to break or cut by way of twisting and other physical attacks on hardware. Finally, we sifted through numerous expert reviews and Amazon buyer reviews to bring you the U-locks you'll find below, all of which have average user ratings of 4 out of 5 stars or higher.

Looking for more bike protection? Check out our picks for the best helmets, headlights, and padlocks.