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@kryptonite review

Updated September 30, 2026 · CommuteCue Editorial Team · Facts checked September 30, 2026

We earn a commission when you sign up through links on this site. Partner status can affect where a brand appears in our rankings. Partners with a live offer in your country come first, then every other brand by score.

Our verdict

Kryptonite suits commuters who want one lock rather than a full helmet-and-light kit, and it starts at a low $12.95. Independent testers give its key product the Sold Secure Powered Cycle Diamond, and it holds a 8.8 overall. Treat the accessories as separate buys.

Key facts

Best for
One lock for a commuter bike, bought direct, without a helmet in the same basket.
Product type
Lock↗
Price from
$12.95↗
Independent rating
Sold Secure Powered Cycle Diamond↗
Weight (g)
2,300↗
Integrated lights
No↗
Crash replacement
No↗
Markets
US, DE, IT, ES, FR↗
Legal entity
Schlage Lock Company, LLC↗
Founded
1971↗
Support channels
Help-centre↗
Standards
Sold secure, Art
Official website
kryptonitelock.com

Facts checked September 30, 2026, 6 sources

Apps and profiles

Elsewhere
WikidataWikipediaXyoutube.com

Pros and cons

Pros

  • Entry price of $12.95 puts a first lock within reach, and the cost picture holds up across the 24 brands ranked here.
  • The featured key carries the Sold Secure Powered Cycle Diamond, an independent rating rather than a maker's own claim.
  • The range is sold across US, DE and IT, so a bike left outside in several countries has one brand behind it.
  • The product is a lock at lock, so it pairs with a helmet from another maker rather than replacing one.
  • Backed by Schlage Lock Company, LLC as the legal entity, with the company tracing back to 1971.

Cons

  • Crash replacement is no, so a lock written off in a collision has to be bought again.
  • Integrated lights are no, meaning a second purchase for anyone who rides after dark.
  • Support runs on help centre only, with no phone line listed for lock problems.
  • Weight of 2,300 g makes it the heaviest item in this group of 9, a carry to plan for on a daily commute.

Ready to try @kryptonite?

Scored 8.8 / 10 by CommuteCue.

See alternatives

Who it suits

  • Commuters securing a bike outside a workplace rack or street stand, who want a single lock purchase
  • Riders already happy with their helmet and only missing a key, chain or frame lock
  • Anyone buying in the US, DE and IT markets who wants one brand to cover several countries

Who should look elsewhere

  • Riders who want lighting and locking in one product, who should look at Lumos for a helmet with lights built in
  • Buyers who want a crash replacement scheme after a write-off, a service Lumos Helmet lists as standard
  • Anyone who needs phone support for security problems, since Bern pairs a helmet with advice rather than a lock line

How it compares on our data

On entry price, Kryptonite sits at 4 of 24 brands compared, which puts it among the cheaper names in the group rather than at the top. That matters for a first lock: the ticket is small enough to buy outright, and the same lock can be added to a second bike without turning into a large monthly outlay. Weight tells a different story. At 2,300 g, this lock ranks 9 of 9 on that measure, and the range spans 24 g to 2,300 grams. A compact D-lock has to feel solid in the hand, and that weight is the part of the price you carry in a bag or a pocket every day. So the trade-off is straightforward. The money side is competitive, and the bulk is not. A commuter who walks a long way from the station should weigh that before buying, while a rider who locks up and walks away from the bike can ignore it.

Core features

The specification is deliberately narrow. This is a lock, not a helmet, so the comparison across lock lines starts from what secures the frame rather than what protects the head. What sits on the credit side is independent testing. The featured key is sold as Sold Secure Powered Cycle Diamond, which is a rating from outside testers rather than a claim from the maker. That is the single fact most worth checking when a lock is judged against another at the same price. Two features are absent, and both are named plainly here. Integrated lights are no, so visibility on the way home is a separate purchase. Crash replacement is no, so a lock damaged in a collision is a fresh cost rather than a claim. Neither absence makes the product weaker for its stated job, and both change the total basket if you were planning one combined order. Then there is weight, at 2,300 g, which puts it at the heavy end of the locks in this group. That bulk is the practical cost of the security level the Sold Secure Powered Cycle Diamond rating represents.

The company behind it

Kryptonite is a lock specialist rather than a broad cycling brand, and the ownership behind it is Schlage Lock Company, LLC. That parent is worth knowing when you weigh support for a product you depend on daily, since a warranty claim runs through a named legal entity rather than an unlisted seller. The company history runs back to 1971, which is a long stretch in a category where fittings and expectations have changed. Age is not proof of quality, but it does suggest the tooling and the test programme predate most of the current competition. Support is thinner than that history implies. The listed route is help centre, so a jammed barrel or a lost code is likely handled through written guidance and self-service. If you ride in poor light or in a high-theft area, that gap in cover is the part to budget for with a backup key or a second lock.

How @kryptonite compares

Frequently asked questions

How much does a Kryptonite lock cost?+

Entry is $12.95 for the cheapest model, which places the brand at 4 of 24 brands compared on price. The weight of 2,300 g suggests the cost sits at the sturdy end of the range rather than the light end, so treat the entry figure as a starting point and expect heavier models above it.

Does Kryptonite sell helmets as well as locks?+

No. The listed lock is a lock, so a rider who wants a helmet needs a separate brand. That makes Kryptonite a one-line purchase for someone who already owns head protection, and a two-brand basket for anyone starting from nothing.

Which independent rating does the Kryptonite key hold?+

The featured key is sold as Sold Secure Powered Cycle Diamond. That is an outside rating, so it can be compared directly with the ratings of other locks in this group rather than taken on trust from the maker's own description.

Is there a crash replacement scheme on a Kryptonite lock?+

Crash replacement is no, so a lock damaged in a collision has to be bought again. Buying a cheap second lock as a spare, or checking whether a home policy covers cycle theft, fills that gap.

Do Kryptonite locks have built-in lights?+

Integrated lights are no. Lights are sold as a separate part of the range, which suits riders who already carry a light but adds a purchase for anyone relying on the lock for night visibility.

Where can you buy Kryptonite locks?+

The listed markets are US, DE and IT, so the range is sold across several countries. Buyers outside those markets should check local delivery and key-cutting options before committing to a heavier model.

How heavy is a Kryptonite lock to carry?+

The listed weight is 2,300 g, which ranks 9 of 9 products in this group. The group spans 24 g to 2,300 grams, so a compact lock is far lighter if daily carrying matters more than deterrence.

How do I get help with a Kryptonite lock?+

The listed support route is help centre. That means self-service guidance rather than a phone line, so it suits riders comfortable troubleshooting a jammed barrel, and suits a buyer less if you want to talk someone through a problem. The warranty runs through Schlage Lock Company, LLC.

Sources

Compiled from 7 source pages, checked September 30, 2026. We did not open an account.

Not confirmed yet: Fit range.

@kryptonite

One lock for a commuter bike, bought direct, without a helmet in the same basket.

8.8/10See alternatives