Best E-Bike Locks of 2026

A U-lock is only as good as what it closes around, and this one has the largest stated interior in the group: 4 inches by 9. That is enough to take an oversized e-bike down tube and still shut around a rack post, which is exactly the combination a compact U-lock gives up on. The shackle is 12.7 mm hardened steel with a double-deadbolt crossbar, and the rating is Sold Secure Silver rather than Gold — a step down from our top pick on paper.

The included 4-foot, 10 mm double-loop cable is what closes the gap in practice. Loop it through the front wheel and back to the U-lock and both ends of the bike are secured with one key. We came to prefer that pairing to a single heavier lock on a commute, because it splits the job: the U-lock holds the frame to the world, the cable stops a wheel walking off.

The FlexFrame-U bracket bolts to the frame and holds the lock rigid; check the bolt tension once a season, because a loose bracket rattles and eventually drops the lock. Two stainless keys come in the box, which is the number you want — one on the ring, one in a drawer at home. It is a premium price for a Silver rating, and the interior space is what you are paying for.

Seventeen millimeters of shackle is the thickest in this group, and it comes at a midrange price rather than a premium one. Judged purely on the lock head, it is the best value here. The number that tempers it is the exterior: 7.76 by 5.02 inches leaves a small interior once the shackle takes its share, so it suits a rack with slim arms more than a fat post and a down tube at the same time.

The 5-foot cable does most of the work on an e-bike. Thread it through the rear wheel and around the frame and the U-lock only has to close on one junction, which is where the small interior stops mattering. Sportneer claims the lock head resists 12 tons of hydraulic shear; that is a manufacturer figure we cannot check, and the shackle is visibly substantial anyway. The bracket carries the lock sideways, so make sure it doesn't foul a bottle cage or frame bag before you bolt it on.

One detail to plan around: with the end loops swaged on, the cable's usable length is closer to 4 feet than the 5 the listing claims. That is still plenty to reach a front wheel and come back, but on a long cargo bike, measure the run before you commit.

Four feet is the longest chain here, and length is the whole point. It is the lock for the rack where the anchor sits back from the curb, the railing with a post on the wrong side, the two-bike lock-up where a 3-foot chain leaves one frame dangling. At 1.75 pounds it also goes in a bag without argument.

The chain is 7 mm hardened alloy steel in a nylon sleeve, keyed with two keys, and it snaps shut without the key — you only reach for the key to get out. That is a small thing that turns into a big one when you are juggling gloves and a helmet. What 7 mm is not is Gold-rated thickness: this sits a class below the Kryptonite chain we recommend for high-theft parking, and it is priced accordingly.

The chain isn't where this one gives ground; the lock body is. A hard attack on the head is the scenario that beats it before the links ever matter, so we treat it as a long-reach second lock, or the lock for a bike that is insured and parked where someone can see it. For that job it is hard to beat, and the sleeve means it won't chew your paint in the meantime.

This is not the lock to leave an e-bike on a street sign overnight, and 6 mm links are the honest reason why: they will stop someone walking off with the bike in a hurry, and they won't stop bolt cutters. What it is instead is the lock that comes with you.

At 1.4 pounds it disappears into a backpack or coils around a seat post, and the snap-shut body means you can lock up one-handed without digging for a key — the key only matters when you are leaving. The cloth sleeve keeps the links off your paint, there is a dust cap over the keyway, and the key goes in either end, which matters more than it sounds in the dark.

The head is the part that gives out before the chain does; a sticky key is the early warning, so keep the keyway clean and don't force a turn. Used that way, it is the lock for the office bike room, the café stop where the bike stays in sight, and the second lock that ties a frame to a wheel while a U-lock does the anchoring.

The bracket is what makes this one live on the bike: two rubber shims let it clamp a seat post or a rack tube, and the 12 mm cable coils small enough to sit there between rides. On an e-bike with a rear rack, it is a lock you never have to remember to pack.

Twelve millimeters of steel cable in a PVC jacket, 4 feet long, keyed with two keys and a zinc alloy core. It threads a rear wheel, a frame triangle, and a fixed ring in one go — a flexibility no U-lock here matches — and it wipes clean after a wet ride. What it cannot do is survive cable cutters, so the setting has to do some of the work.

We treat it as a second lock, and that is where it earns its place: front wheel to frame while the U-lock does the anchoring, a helmet and a jacket through the same loop, two bikes to a railing at a picnic. As the only lock on an e-bike left on a street, no. As the cheap, light thing that stops a wheel walking away, it is the first accessory we add to a lock we already trust.