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Best OverallA heavy D-lock built to resist angle grinder attacks, covering motorcycles, bikes, e-bikes and cargo bikes. A mounting bracket is not named.
Popular PickA certified compact U-lock with a looped cable for riders of bikes, e-bikes and scooters who stop for a few hours. The listing gives outer dimensions only, so check the interior opening against your frame.
A compact U-lock in the middle of the maker's range, for riders locking scooters, gates or bikes for hours at a time. No interior opening size is given, so check that it fits your frame and post.
A U-lock bundled with a looped cable for riders who want to secure a wheel or accessory as well as the frame. Sold Secure certification is a plus, but the maker's own scale still marks it for short stops.
A combination U-lock with a bracket for carrying on the bike, aimed at commuting and touring. The maker rates it six out of ten for security.
A mid-level U-lock for riders who park for short stretches and want a mounting bracket included. The maker's own security scale puts it in the middle, so it is best for quick stops rather than overnight in a busy city.
A pocketable lock with a looped cable for riders who stop briefly and want the bracket included. The maker's own scale puts it at mid-level, so it suits quick errands more than overnight street parking.
A key-operated U-lock with a hardened shackle and a bracket for carrying it on the bike. The listing gives no formal security rating.
A heavy duty U-lock with the highest security rating the maker gives its locks here, for riders who leave e-bikes or scooters parked for hours. It is weighty, and no interior opening size is listed.
A heavy U-lock aimed at angle grinder attacks, with a thick shackle, anti-drill deadbolt and a Sold Secure Diamond rating in the title. Inner opening size is not listed.
A heavy bicycle U-lock with a hardened square shackle and a mounting holder, built for urban parking of valuable bikes. The listing gives no inner shackle width beyond the model name.
A heavy U-lock with a flexible cable that lets a rider secure wheels or a seat as well as the frame. It weighs about as much as a small dumbbell, so it is not for rides where weight counts.
A keyless U-lock with a resettable code and a standard size opening for many lock-up spots. The reset steps are not in the listing.
A lightweight U-lock with a Sold Secure Diamond rating for bikes, e-bikes, scooters and motorcycles. The mounting bracket is sold separately.
A compact U-lock with a wheel extender for riders who want to secure a wheel as well as the frame without carrying a cable. No security rating is listed, so judge it as a small, short-stop lock.
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Kryptonite, Seatylock, ABUS, Hiplok, ONGUARD lead this category among the 5 brands that passed our curation checks.
A listing appears only when it has a recorded price, a minimum customer rating, and enough ratings or monthly sales. Generic and unbranded listings are left out, while every real brand stays, including brands sold only on Amazon. The ones that pass are ordered by how many people search for that brand and model each month; review counts only break ties.
We list 15 u-locks from 5 brands, including Kryptonite, Seatylock, ABUS, Hiplok, ONGUARD.
How we list products: every listing here has a recorded price, a minimum customer rating and enough ratings or monthly sales. Generic and unbranded listings are left out; every real brand stays, including brands sold only on Amazon. Products are ordered by monthly searches for their brand and model on every page.Editorial policy
