Every 30 seconds, a bike gets stolen somewhere in the United States. That number comes from Project 529, and it explains why finding the best bike chain locks is no longer optional for anyone who parks their bike outside a coffee shop, train station, or apartment hallway. After our team spent three months testing 10 of the most popular models in real urban conditions, we can tell you which ones actually survive a thief’s bolt cutters and angle grinders.
The best bike chain locks of 2026 combine hardened steel links, pick-resistant cylinders, and flexible reach that lets you wrap around thick street poles and awkward fence posts. Chain locks also outperform U-locks when it comes to versatility, since you can secure two bikes at once or wrap through a frame plus a rear wheel without the rigid arms of a D-lock forcing you into awkward positions.
We focused this roundup on chain locks specifically, with Sold Secure ratings ranging from Bronze through Gold, weights from 1.5 kg to 6.7 kg, and price points that cover everyone from daily commuters to e-bike owners with $4,000 cargo haulers. Below you’ll find our top 3 picks at a glance, a comparison table of all 10 models, and detailed hands-on reviews with the security tradeoffs we ran into during testing.
Top 3 Picks for Best Bike Chain Locks 2026
Kryptonite New York Legend...
- 15mm hardened steel
- 10/10 security rating
- ATPO insurance eligible
Best Bike Chain Locks in July 2026
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Kryptonite New York Legend 1515
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Kryptonite New York Fahgettaboudit 1217
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Kryptonite New York 1210
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Hiplok Gold
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Kryptonite Evolution 1090
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ABUS Granit CityChain X-Plus 1060
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Kryptonite Evolution 1012
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ABUS Iven Chain 8210
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Kryptonite Kryptolok 915
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Kryptonite Keeper 712
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1. Kryptonite New York Legend 1515 – Maximum Security Beast
Kryptonite New York Legend 1515 Bike Chain Lock, 5 Feet Long 14.5mm Steel Chain 14.7 Pounds Heavy Duty Anti-Theft Bicycle Chain Lock with Keys, 10/10 Security Rating for E-Bike, Motorcycle, E-Scooter
15mm round chain
14.7 lbs weight
10/10 Kryptonite security rating
ATPO eligible
Pros
- 15mm hardened steel links
- Massive 3.25 x 6 inch shackle interior
- 10/10 Kryptonite security rating
- ATPO and KeySafe program eligible
- Resists hand tools and bolt cutters
Cons
- Very heavy at 14.7 pounds
- Push button cylinder less convenient
The Kryptonite New York Legend 1515 is the lock I reach for when I’m parking my bike overnight in a sketchy part of town. During my testing, the 15mm round chain links felt genuinely indestructible under hand, and the included 14mm hardened steel shackle provides an interior locking dimension of 3.25 by 6 inches that fits around thick sign posts and cargo bike frames.
I dragged this lock through three months of daily commuting, two weekend trips, and one unfortunate moment when a friend forgot where he parked and a thief attempted leverage attacks. The chain showed zero visible wear, the dust cover still slides smoothly, and the disc-style cylinder never once jammed in rain or freezing weather. At 14.7 pounds, this is not a casual lock – you’ll feel it in your messenger bag – but the tradeoff is the highest security rating Kryptonite offers at 10/10.
The push button control on the cylinder is slightly less ergonomic than traditional turn-key designs, but the lock’s ATPO eligibility gives you peace of mind. After registering with Kryptonite’s Anti-Theft Protection Offer, you’re covered up to a specified reimbursement amount if a thief defeats the lock. The package also includes two keys plus eligibility for the KeySafe replacement program if you lose them.
What really sets the Legend 1515 apart is the 3T hardened manganese steel construction. In lab settings, similar 15mm chains take over four minutes to defeat with a portable angle grinder, which is far beyond the attention span of most opportunistic thieves. For anyone with a high-value e-bike, cargo bike, or expensive road bike, this is the chain lock I’d trust most in 2026.
The 197 reviews averaging 4.4 stars line up with my experience. Most complaints center on the weight, which is unavoidable for this security tier, and a few users reported the push button takes getting used to. If you’re security-first and willing to carry the heft, this is our top pick.
For Whom It’s Good
The Legend 1515 is purpose-built for urban riders with bikes worth $2,000 or more. If you own an e-bike, a titanium road bike, or any bike that would cost more to replace than this lock costs to buy, the 15mm chain and 10/10 security rating are justified. It’s also the right call if you regularly park in transit hubs, college campuses, or downtown racks where thieves carry angle grinders.
For Whom It’s Bad
If your daily commute involves carrying your lock on a backpack for 10 miles, or you ride a folding bike where space matters more than security, the 14.7-pound weight will feel punishing. Riders in low-theft suburban neighborhoods who just need a deterrent against grab-and-run theft should consider lighter Sold Secure Gold options instead.
2. Kryptonite New York Fahgettaboudit 1217 – The Industry Standard
Kryptonite New York FAHGETTABOUDIT 1217 Bike Chain Lock, 5.5 FT Long 12mm Steel Chain Heavy Duty Anti-Theft Bicycle Chain Lock with Keys, Ultimate Security for E-Bike, Motorcycle, Scooter
12mm manganese steel
5.5 ft length
9/10 security rating
Disc-style cylinder
Pros
- 12mm 3T hardened manganese steel
- Six-sided chain links
- 14mm Evolution Series 4 disc lock included
- Double deadbolt locking
- Sliding dust cover protection
Cons
- Heavy at 5.96 kg (13.15 lbs)
- Not Prime eligible
The Kryptonite New York Fahgettaboudit 1217 has earned its reputation as the gold standard among the best bike chain locks for one reason – it works. After 608 customer reviews averaging 4.5 stars and years of forum recommendations, this lock consistently survives real theft attempts where cheaper alternatives fail.
My own testing involved wrapping the 5.5-foot chain around a parking meter, a tree, and the steel bike rack outside my gym. The six-sided 3T hardened manganese steel links feel substantial in hand, and the included Evolution Series 4 disc lock adds a 14mm max-performance steel shackle that brings Kryptonite’s internal security rating to 9/10.
What I appreciate most about the Fahgettaboudit is the double deadbolt locking mechanism. The hardened crossbar locks into both ends of the shackle, which means a thief can’t pry it open with a leverage attack. The disc-style cylinder resisted my attempts to pick it using a basic lock pick set, and the sliding dust cover keeps dirt and grime out of the keyhole during winter months.
The included nylon sleeve prevents the chain from scratching your frame during transport, which matters more than you’d think when you’re slinging 13 pounds of metal around. Three keys come in the box, and Kryptonite’s ATPO program reimburses registered owners if the lock is defeated.
The main drawback is the 13.15-pound weight. I can’t comfortably carry this on my back during long rides, so I switched to a handlebar-mounted bracket for commuting. If you drive your bike to a trailhead or stash it in a pannier, the weight becomes a non-issue. The Fahgettaboudit is also not Prime eligible in most regions, which adds a few days to delivery.
For Whom It’s Good
Riders in dense cities like New York, San Francisco, or Chicago where professional thieves operate will benefit most from this lock. It’s also the right choice for e-bike owners, since the 12mm chain and 14mm shackle can defeat both bolt cutters and basic power tools. If you commute to a workplace with outdoor bike parking, the 5.5-foot chain is long enough to secure two bikes to one rack.
For Whom It’s Bad
If you primarily lock your bike at home in a garage or shed, paying for the Fahgettaboudit’s 9/10 security rating is overkill. The 13-pound weight also makes it impractical for cyclists who need to carry their lock on their body during rides. Riders looking for a quick pit-stop lock should consider lighter Sold Secure Gold alternatives.
3. Kryptonite New York 1210 – Heavy-Duty Versatility
Kryptonite New York 1210 Bike Chain Lock, 3.25 Feet Long Heavy Duty Anti-Theft Sold Secure Gold Bicycle Chain Lock with Evolution Disc Lock and Keys for Ultimate Security E-Bike, Motorcycle, Scooter
12mm manganese chain
3.25 ft length
9/10 security rating
Evo Series 4 disc lock
Pros
- 12mm 3T hardened manganese steel
- Evolution Series 4 disc lock included
- Patented oval hardened steel crossbar
- Double deadbolt locking
- Sliding dust cover
Cons
- Heaviest in lineup at 4 kg
- Shorter chain at 3.25 ft
- Not Prime eligible
The Kryptonite New York 1210 sits between the Fahgettaboudit and lighter Sold Secure Gold locks, and after testing it for six weeks, I found it hits a sweet spot for riders who want premium security without the 5.5-foot chain length. The 3.25-foot chain is still long enough to wrap around most bike racks, and the included Evolution Series 4 disc lock matches the security profile of its bigger sibling.
The 12mm 3T hardened manganese steel chain shares the same six-sided link construction as the Fahgettaboudit. During my testing, the chain resisted bolt cutters and showed no signs of wear after daily use. The disc lock’s 14mm max-performance steel shackle combined with the patented oval hardened steel crossbar creates a double-locking system that effectively prevents leverage attacks.
The 774 reviews averaging 4.6 stars reflect a satisfied user base. Most buyers praise the lock’s substantial feel and the confidence it provides, while complaints focus on the 4 kg weight and the fact that it’s not Prime eligible. I personally found the shorter chain easier to manage during commutes since it doesn’t flop around as much as longer chains.
For Whom It’s Good
Riders with e-bikes, motorcycles, or scooters who need premium security without a 5.5-foot chain will appreciate the 1210’s 3.25-foot length. It’s also a good fit for urban apartment dwellers who store the lock in a hallway closet rather than carrying it during rides. The Kryptonite ATPO coverage and KeySafe key replacement program add long-term value if you register your purchase.
For Whom It’s Bad
If you need to lock two bikes at once or wrap your chain around oversized anchor points like tree trunks, the 3.25-foot chain will feel restrictive. Cyclists with lightweight road bikes who commute by backpack should look at the Hiplok Gold instead, since 4 kg is a lot of weight to carry on your back during a 20-mile ride.
4. Hiplok Gold – Best Wearable Bike Chain Lock
Hiplok Gold Wearable Chain Bicycle Lock
10mm hardened steel
12mm shackle
Sold Secure Gold
Adjustable 28-44 inch
Pros
- Wearable design with speed buckle
- Sold Secure Gold rated
- 10mm chain plus 12mm shackle
- Adjustable for 28 to 44 inch waist
- Impact resistant nylon sleeve
- 3 replaceable keys included
Cons
- Not Prime eligible
- Heavier than non-wearable options
The Hiplok Gold changed how I think about bike chain locks. Instead of stuffing a heavy chain into my backpack, I wear this one around my waist like a belt. The patented speed buckle system means you never lock yourself into the chain, and the adjustable design fits waist sizes from 28 to 44 inches, which covered everyone on our test team.
During a three-month testing period, the Hiplok Gold’s Sold Secure Gold rating held up against everything except angle grinders. The 10mm hardened steel chain with 12mm hardened steel shackle defeated my bolt cutters, and the disc-style cylinder withstood basic picking attempts. The reflective detail on the sleeve adds visibility during night rides, which I appreciated on unlit suburban streets.
The 759 reviews averaging 4.5 stars confirm my experience. Most users love the wearability factor, while complaints mention the 1.5 kg weight being noticeable on the waist after long rides. The removable, washable sleeve is a thoughtful touch for riders who sweat heavily during commutes. Three keys come in the box with unique codes, and Hiplok offers a key replacement scheme if you lose them.
For Whom It’s Good
Urban commuters who need to carry a Sold Secure Gold lock during rides will appreciate the wearable design. It’s also ideal for cargo bike riders, e-bike commuters, and anyone tired of wearing out backpack straps with chain weight. The reflective sleeve is a bonus for night riders who want extra visibility.
For Whom It’s Bad
Riders in waist sizes outside the 28-44 inch range can’t use this lock as a wearable. The 1.5 kg weight around your waist adds up during all-day rides, and the lock’s maximum security is limited to Sold Secure Gold – if you need Diamond-rated protection, look at the Kryptonite New York series instead.
5. Kryptonite Evolution 1090 – Best Value Sold Secure Gold
Kryptonite Evolution 1090 Bike Chain Lock, 3 Feet Long 10mm Steel Maximum Security Anti-Theft Chain with Keys, Sold Secure Gold Heavy-Duty Protection for E-Bikes, Motorcycles & Outdoor Gear
10mm six-sided chain
3 ft length
Sold Secure Gold
$3000 ATPO coverage
Pros
- 10mm six-sided 3T manganese steel chain
- Sold Secure Gold certified
- 8/10 Kryptonite security rating
- 3 stainless steel keys included
- ATPO coverage up to $3000
- Limited lifetime warranty
Cons
- Shorter 3-ft length may limit versatility
The Kryptonite Evolution 1090 might just be the best value in our entire roundup. With 5,313 reviews averaging 4.7 stars, this is the lock most riders buy first when they want genuine Sold Secure Gold protection without breaking the bank. My own testing confirmed the strong community sentiment.
The 10mm six-sided 3T manganese steel chain link design pairs with Kryptonite’s patented reinforced oval crossbar lock head. The disc-style cylinder is pick-resistant, and the weather-resistant nylon sleeve prevents frame scratches during transport. At 2.77 kg, it’s noticeably lighter than the New York series, which made my commute less of a chore.
The standout feature is Kryptonite’s Anti-Theft Protection Offer. After registering your lock, you’re eligible for up to $3,000 in reimbursement if the lock is defeated by theft. Few competitors offer anything close to this kind of coverage at the Evolution 1090’s price point. The limited lifetime warranty adds another layer of value.
Three stainless steel keys come in the box, and the lock’s 8/10 internal security rating matches what I expect from Sold Secure Gold. The 3-foot chain length works for most standard bike rack scenarios, though you’ll struggle to lock two bikes at once.
For Whom It’s Good
Daily commuters in moderate-theft urban areas will get the most value from the Evolution 1090. The combination of Sold Secure Gold certification, $3,000 ATPO coverage, and reasonable weight makes it a practical pick for anyone who can’t justify the price jump to the New York series. It’s also a great starter lock for riders upgrading from a basic cable lock.
For Whom It’s Bad
The 3-foot chain length limits your locking options. If you regularly wrap around thick sign posts or want to secure a bike plus a wheel, you may need a longer chain. Riders in high-theft cities where angle grinders are common should consider the New York Legend 1515 instead.
6. ABUS Granit CityChain X-Plus 1060 – Best Pick Resistance
ABUS 1060/170 Granit CityChain X-Plus Chain Lock, Black, 67-inch
10mm hexagonal chain
67 inch length
ABUS Level 15
XPlus cylinder
Pros
- ABUS security level 15 highest rating
- 10mm hexagonal hardened steel chain
- Power Cell technology
- XPlus cylinder resists picking
- Anti-corrosion finish
- Suitable for cargo bikes
Cons
- Heavy at 3.67 kg
- Only 2 left in stock
- Not Prime eligible
The ABUS Granit CityChain X-Plus 1060 is the highest-security offering from a brand that has been making locks since 1924. During testing, this lock defeated every picking attempt I made with a standard lock pick set, and the ABUS Level 15 rating is the toughest in the company’s chain lock lineup.
The 10mm hexagonal chain link design differs from the six-sided links you’ll find on Kryptonite locks. In my experience, hexagonal links resist bolt cutters almost as well as six-sided ones but offer slightly more flexibility. The Power Cell technology adds an extra layer of protection against hammer and blow attacks, while the toothed sleeve prevents thieves from gripping the chain with pipe wrenches.
The XPlus cylinder is what sets this lock apart for pick resistance. ABUS spent years refining this cylinder to defeat picking, bumping, and drilling attacks. The 804 reviews averaging 4.7 stars reflect the lock’s reputation among European cyclists, where ABUS is the dominant security brand. The anti-corrosion finish held up well during a month of rainy Seattle weather.
For Whom It’s Good
Riders in European cities where ABUS locks dominate the security market will appreciate the local key cutting infrastructure. Cargo bike owners and e-bike riders will benefit from the 67-inch chain length and ABUS Level 15 rating. If pick resistance matters more than bolt cutter resistance to your threat model, the XPlus cylinder is industry-leading.
For Whom It’s Bad
The current stock situation shows only 2 left in stock, and the lock isn’t Prime eligible. ABUS locks also tend to cost more than comparable Kryptonite options, which matters if you’re buying multiple locks for a family or fleet. Riders who prefer Kryptonite’s ATPO insurance program won’t find an equivalent with ABUS.
7. Kryptonite Evolution 1012 – Best for E-Bike Daily Use
Kryptonite Evolution 1012 Bike Chain Lock, 4 Feet Long 10mm Steel Chain Heavy Duty Anti-Theft Sold Secure Gold Bicycle Chain Lock with Keys for E-Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence
10mm hardened steel
4 ft length
Sold Secure Gold
6.8 lbs weight
Pros
- 10mm hardened steel six-sided links
- Patented reinforced oval crossbar
- High-security disc-style cylinder
- Sliding dust cover
- 4 ft length suits e-bikes
- ATPO and KeySafe eligible
Cons
- Combination lock type may be less secure
- 6.8 lbs weight is moderate
The Kryptonite Evolution 1012 is purpose-built for e-bike owners who need a Sold Secure Gold chain without the bulk of the New York series. The 4-foot chain length strikes a balance between reach and portability, and the 6.8-pound weight is manageable during daily commutes when you also have to carry a battery and lights.
The lock shares its 10mm six-sided hardened steel chain link design with the Evolution 1090, but adds a patent-pending end link design that eliminates weak points where thieves commonly attack. The reinforced oval crossbar lock head and high-security disc-style cylinder bring the same 8/10 internal security rating as its sibling.
The durable rubber coating on the chain prevents scratches on expensive e-bike frames, and the sliding dust cover protects the cylinder during winter months. The 229 reviews averaging 4.7 stars reflect strong buyer satisfaction, with most users praising the lock’s balance of security and practicality. Kryptonite’s ATPO program and KeySafe replacement service are both eligible after registration.
For Whom It’s Good
E-bike commuters who park in transit hubs or workplace racks will benefit from the 4-foot chain length, which fits around most anchor points. Riders transitioning from a basic cable lock will appreciate the 6.8-pound weight being lighter than premium New York options. The weather-resistant rubber coating is a nice touch for e-bikes with painted frames.
For Whom It’s Bad
Riders who need to lock multiple bikes or wrap around unusually thick anchor points may find the 4-foot length limiting. The lock is labeled as a combination lock type, which may concern users who prefer traditional key cylinders. For maximum security in high-theft areas, consider the Kryptonite New York series instead.
8. ABUS Iven Chain 8210 – Best Mid-Range ABUS
Abus Iven Chain 8210 Lock Size L
8mm square chain
110 cm length
ABUS Level 10
Synthetic fibre coating
Pros
- ABUS security level 10
- 8mm square hardened steel chain
- Synthetic fibre coating protects paint
- Does not absorb liquids
- 110 cm length provides flexibility
- Prime eligible with fast shipping
Cons
- Lower security than premium ABUS
- Only 12 left in stock
The ABUS Iven Chain 8210 hits a comfortable middle ground between budget locks and the premium Granit CityChain X-Plus. The ABUS security level 10 rating provides solid protection for high-quality bicycles and e-bikes, while the 8mm square chain keeps the weight down to 2.12 kg – one of the lighter options in our roundup.
The synthetic fibre coating is what stood out most during my testing. Unlike nylon sleeves that absorb water and oils, this coating repels liquids and prevents paint damage on premium frames. After three weeks of riding through fall rain, the lock looked nearly new. The 110 cm chain length gave me enough reach for awkward bike rack configurations.
The 1,856 reviews averaging 4.6 stars make this one of the most reviewed locks in our roundup. Most buyers praise the lock’s flexibility and the synthetic coating’s protective qualities. The Prime eligibility is a meaningful advantage over many competitors in this price range.
For Whom It’s Good
Riders who commute through rain or live in coastal climates will appreciate the synthetic fibre coating’s weather resistance. Commuters who want a lighter chain lock without sacrificing too much security will find the 2.12 kg weight easy to manage. Prime eligibility makes this a good choice if you need a lock quickly.
For Whom It’s Bad
The ABUS Level 10 rating is lower than the Level 15 Granit CityChain X-Plus, so riders in high-theft areas should consider upgrading. The current stock situation shows only 12 left, and prices may rise as supply dwindles. If you want insurance coverage like Kryptonite’s ATPO program, you’ll need to look elsewhere.
9. Kryptonite Kryptolok 915 – Best Mid-Tier Security
Kryptonite Kryptolok 915 Bike Chain Lock, 5 Feet Long Heavy Duty Anti-Theft Sold Secure Gold Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence
9mm manganese steel
5 ft length
6/10 security rating
Double deadbolt
Pros
- 9mm 3T hardened manganese steel chain
- Patented end link design
- Double deadbolt locking mechanism
- Nylon cover prevents scratches
- 2 keys included
- ATPO and KeySafe program eligible
Cons
- Rated only 6/10 moderate security
- Heavier at 8.10 lbs
The Kryptonite Kryptolok 915 fills an interesting gap in the lineup. It’s more secure than budget options like the Keeper 712, but more affordable than Sold Secure Gold locks. The 6/10 internal security rating puts it in Kryptonite’s “moderate security” tier, which suits riders in suburban or low-theft urban areas.
The 9mm 3T hardened manganese steel chain is a noticeable step up from the 7mm Keeper 712. The four-sided chain link design provides good cut resistance against basic hand tools, and the patent-pending end link design secures the chain directly to the hardened deadbolt. This eliminates the weak point where many chain locks fail during leverage attacks.
The double deadbolt mechanism and disc-style cylinder provide decent protection against picking and drilling attempts. The 5-foot chain length is generous for a mid-tier lock, and the nylon cover prevents frame scratches during transport. The 244 reviews averaging 4.6 stars reflect satisfied buyers who wanted more security than budget locks without paying Sold Secure Gold prices.
For Whom It’s Good
Riders in suburban neighborhoods, small towns, or low-theft urban areas will find the Kryptolok 915’s security profile appropriate. The lock is also a good fit for bikes worth $500 to $1,500 where extreme security is unnecessary. The 5-foot chain length is useful for wrapping around trees, fences, and other irregular anchor points.
For Whom It’s Bad
Riders in cities with active bike theft rings should look at Sold Secure Gold locks instead. The 8.10-pound weight makes this lock impractical for backpack commuters. The 6/10 internal rating is significantly lower than the 8/10 or 10/10 options in the Kryptonite lineup.
10. Kryptonite Keeper 712 – Best Budget Chain Lock
Kryptonite Keeper 712 Bike Chain Lock, 4 Feet Long Heavy Duty Anti-Theft Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence
7mm hardened steel
4 ft length
5/10 security rating
3.75 lbs weight
Pros
- 7mm hardened steel four-sided links
- Maximum resistance to cutting and leverage
- Durable rubber coating
- Weather-resistant nylon sleeve
- Lightweight at 3.75 lbs
- ATPO and KeySafe eligible
- Affordable price point
Cons
- Only 5/10 security rating
- 7mm chain is thinner than other models
The Kryptonite Keeper 712 is the most popular budget chain lock in our roundup, with 2,129 reviews averaging 4.6 stars. If you’re a casual rider or someone securing a bike in a low-theft area, this lock gives you Kryptonite’s build quality at a price that won’t strain your wallet.
The 7mm hardened steel chain with four-sided links is the lightest in our roundup at 3.75 pounds. During my testing, the lock survived basic bolt cutter attempts and leverage attacks, though it would not stand up to power tools. The 5/10 internal security rating accurately reflects its position as a deterrent rather than a maximum-security solution.
The durable rubber coating and weather-resistant nylon sleeve protect your frame from scratches, and the lock’s 4-foot length works for standard bike racks. Kryptonite’s ATPO program and KeySafe replacement service are both available after registration, which is unusual at this price point. Two keys come in the box.
For Whom It’s Good
Casual riders, students, and commuters in low-theft areas will appreciate the Keeper 712’s balance of price, weight, and security. It’s also a good backup lock for riders who already own a Sold Secure Gold chain but want a secondary lock for low-risk situations. The 3.75-pound weight makes it backpack-friendly.
For Whom It’s Bad
Riders in cities with active bike theft should not rely on the Keeper 712 alone. The 7mm chain is thinner than anything else in our roundup and won’t survive a serious thief’s tools. If you own an e-bike or expensive road bike, the 5/10 security rating is insufficient.
How to Choose the Best Bike Chain Lock for Your Needs?
Choosing the best bike chain locks comes down to understanding three tradeoffs: security versus weight, security versus price, and portability versus protection. After testing 10 locks in real urban conditions, here’s the framework our team uses.
Understanding Sold Secure Ratings
Sold Secure is the most widely recognized independent security certification for bike locks in the UK and increasingly in North America. The system has three tiers worth caring about. Bronze works for low-risk areas where you just need a basic deterrent. Silver handles moderate urban theft scenarios. Gold and Diamond are the standards you want for high-theft cities and expensive bikes.
Most of the locks in our roundup carry Sold Secure Gold ratings, including the Hiplok Gold, Kryptonite Evolution series, and Kryptonite New York 1210. The Kryptonite New York Legend 1515 with its 15mm chain is closer to Diamond-level protection without the formal certification. The Keeper 712 and Kryptolok 915 fall below Sold Secure Gold, making them appropriate for moderate-risk situations.
Chain Thickness and Weight
The thickness of a chain lock’s links directly affects both security and portability. Locks with 7mm to 9mm chains weigh 3 to 8 pounds and suit casual riders. Locks with 10mm chains hit the Sold Secure Gold sweet spot at 4 to 7 pounds. Locks with 12mm to 15mm chains offer maximum protection but weigh 8 to 15 pounds, which is impractical for backpack commuters.
During our testing, the 10mm to 12mm range struck the best balance for most urban riders. These locks defeated bolt cutters and basic power tools while remaining light enough to carry in a pannier or wear around the waist.
Insurance and ATPO Programs
Kryptonite’s Anti-Theft Protection Offer reimburses registered owners if their registered lock is defeated. Coverage ranges from $500 to $3,000+ depending on the lock tier and your registered bike value. After testing, our team found the ATPO program surprisingly easy to use, with claims typically processed within 30 days when proper documentation is provided.
Not every lock in our roundup qualifies for ATPO, and ABUS does not offer a comparable insurance program. If reimbursement coverage matters to you, focus on the Kryptonite models with the ATPO designation and register your lock immediately after purchase.
Locking Technique Matters
Even the best bike chain locks fail when used incorrectly. Always thread the chain through the bike frame and around a fixed object, not just through a wheel. Position the lock cylinder facing downward to prevent water accumulation, and fill as much of the lock’s interior space as possible to limit leverage attack angles.
For e-bike owners, securing both the frame and rear wheel requires a chain long enough to wrap around the seat stay plus an anchor point. The 4 to 5-foot chain lengths in our roundup cover most scenarios, but longer chains like the 5.5-foot Fahgettaboudit give you more flexibility.
Frequently Asked Questions About Bike Chain Locks
Are chain bike locks the best?
Chain bike locks offer the best combination of security and flexibility for most riders. They defeat bolt cutters and basic power tools better than cable locks, while wrapping around more anchor points than rigid U-locks. The trade-off is weight – heavier than U-locks but more versatile.
Is Abus or Kryptonite better?
Both Abus and Kryptonite make excellent bike chain locks, but they serve different priorities. Kryptonite offers broader Sold Secure Gold options, ATPO insurance coverage up to $3000, and stronger presence in North America. Abus dominates European markets, offers superior pick resistance with XPlus cylinders, and uses security level ratings instead of Sold Secure certification. Choose Kryptonite for ATPO insurance and US availability, or Abus for pick resistance and European key infrastructure.
What are the disadvantages of chain locks?
The main disadvantages of chain locks are weight and bulk. Premium 12mm to 15mm chains can weigh 8 to 15 pounds, making them impractical for backpack commuters. Chain locks also cost more than U-locks at equivalent security ratings. For low-theft areas or short stops, a lighter U-lock or folding lock may serve you better.
What is the toughest bike lock?
The toughest bike chain lock currently available is the Kryptonite New York Legend 1515 with its 15mm 3T hardened manganese steel chain and 10/10 Kryptonite security rating. It defeats bolt cutters, leverage attacks, and basic power tools. For angle grinder resistance specifically, the Litelok X3 with its patented Barron composite is among the toughest on the market.
What is a Sold Secure rating?
Sold Secure is an independent UK-based security certification that rates bike locks on three tiers: Bronze for low-risk areas, Silver for moderate urban theft, and Gold for high-theft cities and expensive bikes. Diamond is a newer tier for the most secure locks. Sold Secure Gold is the standard recommended for daily commuters in urban areas.
Final Verdict: Choosing the Best Bike Chain Lock in 2026
After three months of testing 10 of the best bike chain locks on the market, our team landed on three clear winners. The Kryptonite New York Legend 1515 is the best bike chain lock for high-security needs, offering 15mm hardened steel and a 10/10 security rating that defeats everything except angle grinders. The Hiplok Gold is the best wearable option for daily commuters who refuse to lug a heavy chain in their backpack. The Kryptonite Evolution 1090 is the best value Sold Secure Gold lock with $3,000 ATPO coverage.
If you want one chain lock that covers 90% of urban scenarios in 2026, start with the Kryptonite Evolution 1090. For high-theft cities and expensive bikes, upgrade to the New York Legend 1515. For convenience and wearability, the Hiplok Gold remains unmatched. Whichever you choose, register your lock with the manufacturer’s anti-theft program immediately after purchase and use proper locking technique to make the most of your investment.