Best Combination Bike Locks of 2026

Two brass keys sit in the box alongside a four-digit dial, and that is the whole reason to look at this NDakter chain. Most combination locks ask you to trust your memory; this one lets you carry a backup without giving up keyless convenience.

The business end is a six-millimeter alloy steel chain, three feet long, wrapped in a fabric cover that keeps the links off your paint. At 1.59 pounds it is lighter than the U-lock kit, and the 1.3-inch lock head is the number to check before you buy: it needs a rack or post with a generous opening.

That key-or-code choice is what earns it a place for commuters who have fumbled a dial in the rain. We appreciate that the four-digit code is easy to reset, and the keys make a forgotten code an inconvenience rather than a ride-ending problem. The 6 mm chain is a commuter deterrent, not a match for a determined thief, but the backup key is the detail that sets it apart.

Five feet of straight cable is a different tool from a U-lock or a coiled cable. It is built to reach around both wheels, a rack, and a post without the memory of a coil fighting you. The 10-millimeter marine-grade steel is vinyl coated, and the straight run threads through tight openings more easily than a coil.

The lock body is electro-galvanized zinc alloy, and the cable is meant for outdoor use. The care note is simple: rinse after saltwater and lubricate the lock occasionally. That is useful advice for a cable that may live on a rack or in a truck bed.

The four-digit combination is resettable, and the straight design makes it easy to wrap around multiple objects. We found it most useful when the rack is the awkward part: a short U-lock may not span the post and both wheels, but five feet of cable will.

The trade-off is security. A 10-millimeter cable is a deterrent, not a U-lock replacement, and a prepared thief with the right tool can defeat it. That is why we treat it as the long-reach option for two bikes or an awkward rack, not the lock we choose for an expensive bike left all day. If you want one lock for high-theft parking, the U-lock is the better anchor.

The NDakter combo is really two locks in one kit: a 1.96-pound U-lock for the frame and a five-foot cable for a wheel or a second bike. That pairing is why it works so well as a primary lock. A cable alone is a convenience lock; a U-lock alone can leave a quick-release wheel unprotected. This kit closes both gaps without asking you to carry two separate locks.

The U-lock's interior is 7.5 by 4.5 inches, which leaves room to catch a frame and a rack without twisting the bike into a bad angle. The five-foot cable is the flexible half: it reaches a front wheel, a second bike, or a post that the U-lock cannot span. The cable is there for coverage rather than as the main lock, which is the right division of labor.

At 2.82 pounds together, it is not a lock you forget in a jersey pocket. It belongs in a pannier, backpack, or frame bag, and that is the trade-off for the extra security. The four-digit code resets easily, so you can choose a number you will remember, and the keyless design means there is no key to lose.

The one thing we keep an eye on is the dial. A combination lock that lives outdoors needs clean, dry treatment, and a quick test before a ride is cheaper than a stuck lock. The U-lock does the hard work; the cable is there to extend coverage, not to replace the anchor.

At 4.8 ounces, the Master Lock 8143D is the lock that disappears into a backpack. The cable is four feet long and five-sixteenths of an inch thick, with a vinyl coating that protects paint. That combination makes it a natural choice for a school bike, a scooter, or a quick errand where you want a lock in hand, not in a locker.

The code is a preset four-digit combination, so you cannot choose your own number. The braided steel cable is flexible enough to thread through a frame and a rack, and the lock is backed by a limited lifetime warranty.

The 8-millimeter cable is the limit. It is a deterrent for short stops, not a lock for an expensive bike left overnight, and the low weight is only an advantage if you use it. We treat it as the lock we keep in the bag for a café stop or a child's bike, and we reach for the U-lock when the bike will be out of sight for longer.

Bright color is not a gimmick on a kids' lock. It makes the lock easy to spot in a bike basket, and it gives a child a reason to actually use it. The Büchel leans into that with a colorful body and a four-digit resettable code, so there is no key to lose on the way to school.

We think the dial is simple enough for children to operate, and the keyless design means a lost key does not strand the bike. The lock is light enough for a child to handle without help, which matters when they are learning the routine. It is a first lock, not a hand-me-down security anchor.

The routine matters as much as the lock: teach your child to loop the cable through the frame and around a fixed rack, not just the handlebar, and to scramble the dial before walking away. A visible rack and a short stop suit this lock better than an isolated overnight spot.

Thirty-two inches is the whole story with the Jokmae. The self-coiling cable is short by design, and at 5.4 ounces it takes up very little room in a seat bag or backpack. The 10-millimeter cable is thick for its size, and the four-digit code resets without a key.

That short length is useful when the rack is close and the job is simple: one frame, one fixed object, one quick stop. It is not the cable for two bikes or a thick post, and the simple zinc-and-ABS body is not built for daily abuse. The PVC coating protects paint, and the self-coiling design keeps the cable tidy between uses.

We see the Jokmae as a backup lock or a kids' lock rather than the only lock on a valuable bike. The short reach is the trade-off, but it is also what makes the lock easy to carry. If you want one lock for a commute and you have room for a little more weight, the Master Lock gives you four feet for a similar carry.