Bike lock certifications are ratings assigned by independent testing bodies after physically attacking a lock with real tools under controlled conditions. The grade reflects actual attack resistance, not a manufacturer's self-reported claim. In 2019, US law enforcement recorded approximately 194,0003 bicycle thefts - a figure that illustrates why independently verified security levels matter. The four systems riders most commonly encounter are Sold Secure (UK), ART (Netherlands), FUB (France), and Varefakta (Scandinavia). This guide covers every major certification system and shows how to match the right rating to an insurer, a bike's value, and a parking environment.
Quick Answer
What is a bike lock certification?
A bike lock certification is a grade issued by an independent testing body after attacking the lock with real tools under controlled conditions. The rating shows how well the lock resisted those attacks. The main systems are Sold Secure (UK), ART (Netherlands), FUB (France), and Varefakta (Scandinavia) - each independent from manufacturers and from one another.
Why it matters:
Independent certifications are the only cross-brand comparison tool not set by the brand selling the lock. UK, Dutch, and French insurers increasingly name a specific certification level as a policy condition, making the right rating a practical requirement rather than a bonus feature.
Key Takeaways
- Sold Secure operates 41 certification levels for pedal cycles: Bronze, Silver, Gold, and Diamond; Gold is the level most frequently cited in UK insurer policy wording.
- ART rates bicycle locks on a 1-to-52 star scale; ART 32 stars is the level Dutch insurers commonly require for bikes above a standard value threshold.
- A single lock can hold certifications from multiple bodies simultaneously - each certification cleared its own independent test protocol.
- An internal brand security scale and an independent certification are not comparable across brands; only shared, third-party ratings create a common reference point.
- Always read the actual policy document rather than the marketing summary; "approved security device" without a named standard and level is not a purchasable specification.
Bike Lock Certifications in 30 Seconds
| If you are... | Do this |
|---|---|
| A UK commuter whose home insurer covers the bike | Look for Sold Secure Gold on the certification body's approved-products list; verify the lock's current status before purchasing |
| A cyclist insured in the Netherlands or Belgium | Choose a lock rated ART 2 stars or higher; ART 3 stars for bikes above your insurer's stated value threshold |
| A French cyclist whose policy references FUB | Look for the FUB Recommande label, often paired with ART or Sold Secure on the same lock |
| An e-bike owner with a bike worth over £2,000 | Target Sold Secure Diamond or ART 4-5 stars; both levels include power-tool attack resistance |
| A rider who travels across European markets | Choose a lock certified under both Sold Secure Gold and ART 3 stars to cover the broadest range of insurer requirements |
What Is a Bike Lock Certification?
A bike lock certification is a grade issued by an independent, third-party testing body after subjecting a lock to a defined attack protocol using real tools - bolt cutters, angle grinders, freezing agents, lever attacks - for a set effort window. The grade reflects how well the lock held up, measured against publicly documented thresholds. If the lock passes, the certification body adds it to a public approved-products database; if it fails, no certificate is issued at that level.
Certification bodies operate independently from manufacturers. They set their own attack protocols and tools, and grade results against criteria they publish and maintain. A lock can apply to be tested, but cannot influence the outcome. This is categorically different from an internal brand security scale, where each manufacturer defines and measures its own parameters.
Consider the difference: a lock marked "Level 10" on one brand's 15-point chart and a lock marked "Level 12" on a competitor's 20-point chart share no common basis for comparison. A lock rated Sold Secure Gold and one rated ART 3 stars both cleared independently administered tests against published criteria and can therefore be evaluated side by side, even though the underlying protocols differ.
Scope: certifications cover resistance to physical attack only. They do not evaluate pick resistance, key-duplication security, corrosion resistance, or long-term weather durability. Those qualities matter but are not what a Gold rating or a 3-star label certifies.
Why Bike Lock Certifications Matter
Independent certification converts a physical test result into a transparent, machine-readable grade. That is why insurers use certifications as a policy condition rather than manufacturer claims - the grade is not self-reported and the test is not run by the brand.
Three reasons certifications matter in practice:
- Insurance compliance. With more than 300,000 bicycle thefts recorded annually in the UK alone6, insurers across the UK and Europe increasingly name a specific certification level in policy documents. A claim filed without the required rating can be rejected even when the bike was locked and the lock was used correctly.
- Cross-brand comparison. Internal brand scales are not comparable across manufacturers. A "Gold" on one brand's internal scale and a "Gold" on a competitor's scale may reflect entirely different attack durations and tool sets. Only shared, third-party certification systems give riders a common reference point.
- Evolving standards. Certification bodies update their test protocols as theft techniques change. Locks retested under newer criteria that still pass carry a meaningfully higher assurance than locks tested under older, lighter protocols.
The 4-Part Bike Lock Certifications Framework
Four dimensions cover the full landscape of bike lock certifications: how independent testing works, the Sold Secure system, the ART and European certification landscape, and insurance compliance. Together, they give any rider or insurer a complete picture of what a rating means and how to use it.
How Independent Testing Works
Every major certification body uses a comparable structure: a manufacturer submits a lock, an accredited lab attacks it with defined tools for a specified effort window, and the result is recorded against published pass thresholds. The lab is independent of the lock brand. Testing labs are typically accredited to national or international standards for laboratory practices, adding a second layer of independence. The key variables that differ between bodies are the tools permitted at each level, the attack duration, and whether power tools are included alongside hand tools. A lock that passes at a given level is added to that body's public approved-products database under its specific model name. Checking this database directly is the most reliable way to confirm a lock's current certification status, since certifications can lapse if production changes or a protocol update triggers a retest.
The Sold Secure System
Sold Secure is the UK's primary independent cycle security certification body, operating 4 levels for pedal cycles1: Bronze, Silver, Gold, and Diamond. Bronze covers resistance to opportunistic attacks with light tools. Silver moves to heavier hand-tool attacks. Gold - the level most frequently cited in UK insurer policy wording - requires locks to resist sustained hand-tool attack for at least 5 minutes. Diamond, the highest level, is designed for high-value bikes and e-bikes and includes power-tool attack resistance in addition to hand tools. Sold Secure publishes a searchable approved-products list by certification level, making it straightforward to verify any lock's current status before purchase.
Deeper read: what Sold Secure Gold means and how it compares with Silver and Diamond.
Deeper read: a full comparison of all major bike lock security rating systems.
ART and European Certification Standards
ART (Stichting ART) is the leading certification body in the Netherlands and is widely recognized across the Netherlands, Belgium, and parts of Germany. ART rates bicycle locks on a 5-star scale2: 1 star for basic resistance suitable for short stops, up to 5 stars for maximum resistance against power tools appropriate for very high-value bikes. ART 3 stars is a meaningful threshold - it is the level Dutch insurers commonly require above a standard bike value and demands a rigorous attack protocol. Beyond ART, France has the FUB Recommande label from the Federation francaise des Usagers de la Bicyclette4; Norway and Denmark have Varefakta5; and France also operates the Velo SRA framework administered by the CNPP. These bodies test independently and do not cross-reference each other's grades. A single lock that earns certifications from two or more of them cleared two or more physically separate attack protocols.
Deeper read: how a folding bike lock earns ART 3-star certification and what that test involves.
Deeper read: a side-by-side explanation of Sold Secure, ART, FUB, Varefakta, and more.
Insurance Compliance and Policy Requirements
Insurance policies covering bicycles list lock requirements in one of three ways: a named standard and level (e.g. "Sold Secure Gold or equivalent"), a general phrase ("approved security device"), or no lock requirement at all. The named standard is the only form that offers a clear purchase target. A general phrase requires contacting the insurer in writing to confirm which certifications satisfy it. No-requirement policies may still result in a denied claim if the insurer deems the lock inadequate at the time of the theft. Certification level requirements also differ by bike value: a policy may accept Sold Secure Silver for bikes under a set threshold but require Gold for bikes above it. Reading the full policy document - not the product summary - before purchasing a lock is the only reliable way to confirm compliance.
Deeper read: how to check your insurer's requirement and choose the right certified lock for policy compliance.
How to Choose the Right Certified Lock
The certification level a rider needs depends on three inputs: the insurer's stated requirement, the bike's value, and the risk level of the typical parking location. Work through these steps in order.
- Read the policy wording. Identify whether the policy names a specific certification body and level. If the wording is vague, contact the insurer in writing and keep the response. The marketing summary is not legally binding.
- Match the certification body to the region. UK insurers predominantly reference Sold Secure. Dutch and Belgian insurers reference ART. French insurers may reference FUB, sometimes alongside ART or Sold Secure. Norwegian and Scandinavian insurers reference Varefakta. For international cover, a lock certified under both Sold Secure Gold and ART 3 stars covers the broadest ground.
- Select a level appropriate for the bike's value. Higher value justifies higher certification. Sold Secure Diamond and ART 4-5 stars represent the maximum testing intensity and are appropriate for high-value bikes and e-bikes where power-tool attacks are a realistic threat.
- Verify the lock on the certification body's approved-products list. Sold Secure, ART, FUB, and Varefakta each maintain a public, searchable list of currently approved products. Confirm the specific model name is listed; a lapsed certification will not appear.
- Consider lock type against the use case. Folding locks, U-locks, and chain locks can each reach Sold Secure Gold or ART 3 stars. The certification level answers the "how resistant" question; the lock type answers the "how portable and how flexible" question. Both matter equally in daily use.
Ease of use is a functional security requirement, not a comfort feature. A Gold-rated lock that stays home because it is inconvenient provides no protection. Portability, mounting quality, and key ergonomics are part of the security equation.
Compare All Bike Lock Certification Systems
| Criteria | Sold Secure | ART | FUB Recommande | Varefakta | Velo SRA |
|---|---|---|---|---|---|
| Testing body | Sold Secure (UK) | Stichting ART (Netherlands) | FUB (France) | Varefakta (Scandinavia) | CNPP / SRA (France) |
| Certification levels | Bronze / Silver / Gold / Diamond | 1 to 5 stars | Pass / Recommande | Approved label | Approved label |
| Primary market | UK, Ireland, international | Netherlands, Belgium, Germany | France | Norway, Denmark, Scandinavia | France |
| Common insurer threshold | Gold for most UK policies | 2-3 stars depending on bike value | Recommande label | Approved label | Approved label |
| Public approved-products list | Yes, searchable by level | Yes, searchable by star | Yes, via FUB | Yes, via Varefakta | Yes, via CNPP |
| Best for | UK-based riders and international reference | Riders in Dutch and neighboring markets | French-market insurance compliance | Scandinavian-market compliance | French supplementary certification |
Choose Sold Secure Gold if: a UK or international insurer names it in the policy, or a single globally recognized benchmark is needed.
Choose ART 3 stars if: the bike is used in the Netherlands or Belgium and the insurer references ART in coverage conditions.
Choose FUB Recommande if: French insurance cover lists FUB as a required or preferred certification.
Choose Varefakta if: a Nordic-market insurer requires a local certification alongside an international standard.
Choose a multi-certified lock if: the rider crosses markets or wants independent confirmation from two separate attack test protocols.
Deeper read: a detailed side-by-side comparison of all major bike lock rating systems.
Common Mistakes
Mistake 1: Treating brand internal scales as cross-brand comparisons
Why it is a mistake: Every lock brand that uses an internal scale sets its own parameters. A "Level 12" on one brand's 15-point chart and a "Level 12" on a competitor's 20-point chart share no common methodology. Internal scales are marketing conventions, not administered standards.
What to do instead: Compare locks by the independent certification they hold - Sold Secure Gold, ART 3 stars - where the testing body and attack protocol are defined, published, and consistent across all certified products at that level.
Read more: how to interpret all major bike lock security rating systems.
Mistake 2: Buying for the wrong certification region
Why it is a mistake: A lock certified under Varefakta or FUB Recommande does not automatically satisfy a UK insurer that explicitly lists Sold Secure Gold. Each body is independent; certification in one system is not recognized by another, even at a comparable security level.
What to do instead: Identify the certification body named in the policy, then verify the specific model on that body's approved-products list. If the policy does not name a body, contact the insurer in writing and request confirmation of which standards they accept.
Read more: how to match a lock's certification to the insurer's policy requirement.
Mistake 3: Treating the minimum requirement as the optimal choice
Why it is a mistake: Insurers list a minimum certification level as the floor, not the recommended level for the rider's actual risk environment. In a high-theft urban location, the resistance gap between Sold Secure Silver and Gold is meaningful; the price difference on the lock is modest by comparison.
What to do instead: Use the insurer's minimum as the floor. For bikes parked regularly in city centers, transit hubs, or high-theft neighborhoods, choose one level above the minimum requirement.
Read more: what Sold Secure Gold means in practice and when it is the right choice.
Mistake 4: Assuming a lock's certification is still current
Why it is a mistake: Certifications can lapse if a lock's production process changes or if a testing protocol update triggers a retest at a lower grade. A lock marketed with a past certification that no longer appears on the body's live approved-products list does not meet the standard.
What to do instead: Before purchasing, search the certification body's current approved-products database by specific model name. Sold Secure, ART, FUB, and Varefakta all publish publicly searchable lists. If the model is absent, the certification has lapsed or was never held at the stated level.
Mistake 5: Conflating lock type with certification level
Why it is a mistake: Lock type (folding, U-lock, chain) and certification level are independent dimensions. A lightweight folding lock can reach Sold Secure Gold or ART 3 stars just as a heavy chain can; a heavy chain lock can fail to reach Silver. The grade reflects a test result, not a product category.
What to do instead: Filter first by certification level to confirm the insurer's requirement is met, then filter by lock type to find the format that fits the rider's daily use pattern.
Read more: how a folding lock can reach ART 3-star certification.
Best Certified Lock by Use Case
Best for UK commuters with cycle insurance
UK home and standalone cycle policies most commonly reference Sold Secure Gold. A Gold-rated lock satisfies the majority of UK insurer requirements across standard pedal cycles. Check whether the policy differentiates by bike value; some insurers upgrade the requirement to Diamond for bikes above a stated threshold.
Deeper read: which rating your UK insurer requires and how to choose the right certified lock.
Best for cyclists in the Netherlands or Belgium
Dutch and Belgian insurers reference ART as their primary certification system. ART 2 stars covers bikes in the lower to mid value range; ART 3 stars is the threshold most commonly required for more valuable bikes. Verify the exact requirement in the policy document, as the value threshold differs by insurer.
Deeper read: ART 3-star certification for folding locks and what independent testing it requires.
Best for e-bike owners
E-bikes command higher price points than standard bicycles and attract disproportionate theft attention as a result. The appropriate certification target is Sold Secure Diamond or ART 4-5 stars, both of which include power-tool attack resistance. Standard Gold or 3-star certification is a reasonable minimum, not the recommended level for high-value electric bikes parked regularly in urban locations.
Best for riders who need cross-border coverage
A lock certified under both Sold Secure Gold and ART 3 stars provides the broadest practical coverage across UK and European insurance markets. These two systems are the most widely referenced by insurers internationally. A lock clearing both protocols has been independently tested against two distinct attack standards, which is stronger than clearing only one.
Deeper read: a full comparison of all major bike lock certification systems and what each covers.
Frequently Asked Questions
What is the difference between Sold Secure Gold and Sold Secure Diamond?
Sold Secure Gold requires a lock to resist sustained hand-tool attack for at least 5 minutes1. Diamond is the highest of the 4 Sold Secure levels for pedal cycles, designed for high-value bikes and e-bikes; it adds power-tool attack resistance to the hand-tool baseline. Most UK insurer policies cite Gold as the minimum requirement; Diamond is appropriate when the policy specifies it or when the bike's value warrants the highest protection level.
Is ART 3 stars the same as Sold Secure Gold?
ART 32 stars and Sold Secure Gold both represent a strong, independently verified level of attack resistance, but they are not formally equivalent. Each body runs its own attack protocol with different tools and defined durations. A lock holding both certifications has cleared two separate independent tests, which is a stronger claim than holding one alone. Insurers specify which system they recognize; one certification does not automatically satisfy the other's requirement.
Do I need a certified lock to make a bike theft insurance claim?
It depends on the policy wording. UK and European cycle policies increasingly require a named certification - Sold Secure, ART, or an equivalent approved standard6 - as a condition of cover. Without it, a claim can be rejected even when the bike was locked and the lock was engaged correctly. Read the actual policy document; the marketing summary is not legally binding and may omit the lock requirement entirely.
Can a folding lock reach the same certification level as a chain or U-lock?
Yes. Certification level is determined by attack resistance, not lock type. Folding locks, U-locks, and chain locks can each reach Sold Secure Gold or ART 3 stars1. Some folding locks hold both Sold Secure Gold and ART 3-star certification simultaneously, having cleared two independent test protocols. Lock type determines portability and locking flexibility; certification level determines the independently verified security grade.
How do I verify that a lock's certification is still current?
Check the certification body's public approved-products list directly. Sold Secure, ART2, FUB, and Varefakta each maintain a searchable database. Search the specific model name, not the brand name. A model listed on that database is currently approved at the stated level; a model absent from the list either never held that certification or has had it lapse since the product was manufactured.
What This Hub Does Not Cover
- Specific lock recommendations by price point - see the Recommended Products section above or individual product pages for model-level guidance.
- Pick resistance and key cylinder security - these qualities are not evaluated by the certification systems described here and require separate assessment.
- Motorcycle and moped security certifications - ART and Sold Secure each operate separate, higher-demand rating systems for powered two-wheelers that are outside this guide's scope.
- Smart lock features (alarms, GPS tracking) - electronic security functions operate independently of the physical certification systems described here.
References
- Sold Secure - Certification levels and approved testing standards for cycle security products (Bronze, Silver, Gold, Diamond)
- Stichting ART (ART Foundation) - ART certification quality mark overview and 1-to-5 star system for bicycle locks
- FBI - Uniform Crime Reporting Program - Property crime offense table showing 2019 bicycle theft data for the United States
- FUB - Federation francaise des Usagers de la Bicyclette - Recommande certification program for bicycle locks tested and approved in France
- Varefakta - Independent Scandinavian product testing and certification body, cycle security lock approval program
- Cycling UK - Guidance on bike security, lock certification requirements, and insurance considerations for UK cyclists
Next Read
Bike lock certifications set the baseline for every security decision - from choosing a lock to filing an insurance claim. The rating system a rider needs depends on their region, their insurer's policy wording, and the value of the bike being protected. Matching the right certification to the right requirement is a one-time step that informs every lock purchase going forward.
Foldylock Forever - a folding lock independently certified to both Sold Secure Gold and ART 3 stars, two separate attack test protocols cleared in two independent laboratories.