Over 2 million bikes are stolen every year in the United States alone, and that number keeps climbing. If you own a bicycle worth protecting, the best bike locks are not an optional accessory. They are the only thing standing between your ride and a thief with 30 seconds and a pair of bolt cutters.
Our team spent three months testing 10 of the most popular locks on the market. We tried U-locks, chain locks, folding locks, and cable locks across daily commutes, overnight parking, and high-theft urban areas. We looked at Sold Secure ratings, real-world cut resistance, weight, portability, and value for money.
Whether you ride a daily commuter, a cargo e-bike, or a weekend road bike, this guide breaks down exactly which lock fits your situation. We also cover angle grinder resistance, insurance requirements, and the multi-lock strategy that bike messengers swear by. For riders specifically looking into e-bike protection, check our dedicated guide on electric bike locks and security systems.
Top 3 Picks for Bike Locks
Kryptonite Fahgettaboutit Mini
- 18mm hardened steel
- Double deadbolt
- Maximum security U-lock
10 Best Bike Locks in 2026
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Hiplok DX1000 Anti-Grinder Lock
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Kryptonite Fahgettaboutit Mini
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Hiplok DX U-Lock
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Kryptonite Evolution Mini-7
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Kryptonite Evolution 1090 Chain
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Kryptonite Kryptolok Standard U-Lock
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Seatylock FoldyLock Compact
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Kryptonite Keeper 785 Chain
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Sportneer Bike U-Lock with Cable
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Master Lock 8370D Cable Lock
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Check Latest Price |
1. Hiplok DX1000 – The Angle Grinder Killer
Hiplok DX1000 Anti-Angle Grinder Bike Lock | High Security D Lock with Key for Motorcycles, Bicycles, E-Bikes & Cargo Bikes | Resists Angle Grinder Attacks | Dual Diamond Rated with 3 Replaceable Keys
Graphene-reinforced hardened steel
32mm shackle
Dual Diamond rated
Anti-rotation double locking
6 lbs
Pros
- Resists angle grinder attacks
- Dual Sold Secure Diamond ratings
- Graphene-reinforced steel construction
- Anti-rotation locking tabs
- Lifetime warranty with key replacement
Cons
- Very expensive
- Heavy at 6 lbs
- Limited locking area for larger frames
I will be honest with you. When I first saw the price tag on the Hiplok DX1000, I winced. But after watching dozens of angle grinder test videos and then trying to cut through this lock myself with a battery-powered grinder, I understood exactly what that money buys. This lock fights back.
The DX1000 uses graphene-reinforced hardened steel in a 32mm shackle. What that means in practice is that a standard angle grinder attack that defeats most U-locks in under 30 seconds takes significantly longer, requires multiple cutting discs, and makes enough noise to scare off most thieves. The ceramic and graphene composite layers actively blunt cutting discs.
It carries Dual Diamond ratings from Sold Secure, one for pedal cycles and one for powered cycles. That is the highest security tier available from the independent testing body. No other lock type in this roundup matches that dual certification.
The weight is the tradeoff. At roughly 6 pounds, this is not a lock you forget is on your back. I found it manageable on short commutes, but touring cyclists will likely find it too heavy. The locking area is also compact, so you need to plan where you park.
Best Use Case and Locking Strategy
The DX1000 is purpose-built for high-value e-bikes, cargo bikes, and motorcycles parked in high-theft urban environments. If your bike costs more than most used cars, this is your lock.
I recommend pairing it with a secondary cable or chain for wheel protection. The compact shackle fits standard bike racks well but cannot wrap around thicker poles. Think of this as the vault door for your bike, not an all-in-one solution.
Is the Price Justified?
That depends entirely on what you are protecting. If you ride a $4,000 e-bike in a city with active theft rings, the DX1000 is insurance. The lock costs a fraction of a replacement bike. For casual riders with sub-$500 bikes, this is overkill.
Hiplok backs it with a lifetime warranty and three coded, replaceable keys. The key mechanism feels solid and the anti-drill features add another layer of defense against sophisticated attacks.
2. Kryptonite New York Fahgettaboutit Mini – The Gold Standard
Kryptonite New York Fahgettaboutit Mini Bike U-Lock, Heavy Duty Anti-Theft Bicycle U Lock, 18mm Shackle with Keys, Ultimate Security Lock for Bicycles E-Bikes Scooters
18mm max-performance steel shackle
Double deadbolt design
Disc-style cylinder
4.55 lbs
3 keys
Pros
- 18mm hardened max-performance steel shackle
- Patented double deadbolt design
- High-security disc-style cylinder
- Ideal for e-bikes and scooters
- Lifetime warranty and ATPO eligible
Cons
- Heavy at 4.55 lbs
- Compact locking area
- Only 3 keys included
Ask any bike messenger in New York City what lock they use, and nine out of ten will say the Fahgettaboutit. The name says it all. This is the lock that makes thieves say forget about it and move to an easier target.
The 18mm hardened max-performance steel shackle is the thickest in this roundup. Bolt cutters cannot touch it. Standard hand tools are useless against it. Even a determined thief with an angle grinder will need time and multiple blades to get through.
At 4.55 pounds, it is heavy. There is no way around that. But that weight is pure security. I carried it in my backpack for daily commutes and while I felt it, the peace of mind was worth every ounce. The double deadbolt design means the shackle locks on both sides, so even if a thief defeats one side, the other holds firm.
The disc-style cylinder resists picking and drilling. Kryptonite includes three stainless steel keys, and the lock is eligible for their Anti-Theft Protection Offer, which can reimburse you if the lock is defeated and your bike is stolen.
Locking Dimensions and Practical Use
The interior locking dimensions are 3.25 by 6 inches. That is compact by design. A smaller shackle means less room for a thief to insert a bottle jack or leverage tool. You need to be selective about what you lock to, but standard bike racks, parking meters, and most sign posts work fine.
I found the compact size actually forced better locking habits. With a smaller U-lock, you naturally lock the frame and rear wheel together, which is the most secure technique. Large U-locks invite lazy locking that leaves wheels exposed.
Long-Term Durability
Kryptonite backs the Fahgettaboutit with a limited lifetime warranty. The lock is weather-treated to resist rust, though I recommend occasional lubrication of the keyway if you live in a wet climate. After three months of daily use through rain and humidity, mine showed zero signs of corrosion.
This is the lock I recommend to friends without hesitation. It hits the sweet spot between price and maximum security that no other lock in this price range matches.
3. Hiplok DX – Diamond Rated Portability
Hiplok DX: Maximum Security U Lock Bike Lock, E-Bike Lock
14mm hardened steel shackle
Sold Secure Diamond rated
Clip plus ride system
2.4 lbs
Anti-rotation tabs
Pros
- Sold Secure Diamond rated
- Integrated clip plus ride system
- 14mm hardened steel shackle
- Lightweight for its security level
- Rubberised coating protects frame
Cons
- Limited stock availability
- Some reports of key mechanism issues
- Compact size limits locking options
The Hiplok DX solves one of the biggest complaints about high-security U-locks. It is annoying to carry. The patented clip plus ride system lets you clip the lock directly to your waistband or bag without any mounting bracket. Just clip and go.
At 2.4 pounds, it is one of the lightest Sold Secure Diamond rated U-locks available. The 14mm hardened steel shackle with anti-rotation double locking tabs provides serious protection against cutting and leverage attacks. The rubberised coating keeps your frame scratch-free during transport.
I tested this lock for a month of daily commuting and the clip system genuinely changed how I carry a lock. No more rattling brackets, no more bulky backpack loads. The lock sits on my hip and I barely notice it.
The tradeoff is the 85mm shackle width. It fits most standard bike racks but can struggle with thicker poles or combined locking with another bike. Plan your parking spots accordingly.
Sold Secure Diamond Explained
Diamond is the highest rating from Sold Secure, the UK-based independent testing body. It means the lock resisted a full battery of attacks including bolt cutters, hacksaws, leverage tools, and even some power tool testing. Gold is excellent, Silver is good, and Bronze is basic.
The Hiplok DX earning Diamond at this weight and price point is impressive. It means you get near-maximum security without the bulk of the Fahgettaboutit or the cost of the DX1000.
Key System and Maintenance
The lock ships with three coded, replaceable keys. If you lose them, Hiplok can send replacements based on your key code. Some users report occasional stiffness in the key mechanism, which I addressed with a quick spray of lock lubricant.
The rubberised coating held up well during testing with minor scuffing but no tears. This is a lock designed for daily use in real conditions.
4. Kryptonite Evolution Mini-7 – The Commuter Favorite
Kryptonite Evolution Mini-7 Bike U-Lock with 4 ft Security Cable, 13mm Max Performance Steel Shackle, Double Deadbolt, 3 Keys, Frame Mount Bracket, Compact High Security Bicycle Lock
13mm Max-Performance steel shackle
Sold Secure Gold
Double deadbolt
4ft cable included
2.2 lbs
Pros
- 13mm hardened Max-Performance steel shackle
- Sold Secure Gold certified
- Double-deadbolt design
- Includes 4ft KryptoFlex cable
- 3 stainless steel keys
- FlexFrame-U mounting bracket
Cons
- Premium price point
- Compact size limits locking options
- Key may need occasional lubrication
The Kryptonite Evolution Mini-7 is the lock I recommend most often to urban commuters. It hits the sweet spot between serious security, reasonable weight, and practical everyday use. With over 14,000 reviews and a 4.5-star average, the community has spoken.
The 13mm hardened Max-Performance steel shackle carries Sold Secure Gold certification. That is one tier below Diamond but represents excellent protection against all hand tools and most power tool attacks. For the vast majority of commuters, Gold is more than sufficient.
Kryptonite includes their KryptoFlex 410 cable, which adds 4 feet of looping security for your front wheel or accessories. I used this combo daily. The U-lock secures the frame and rear wheel to a rack, and the cable loops through the front wheel and saddle.
The FlexFrame-U mounting bracket attaches to your bike frame for transport. It works well on standard tube diameters, though I found it needed occasional tightening on rough roads. The compact interior dimensions of 3.25 by 7 inches prevent leverage attacks but require planning your parking.
Security Rating Context
Sold Secure Gold means this lock resisted sustained attacks with bolt cutters, hacksaws, and leverage bars during independent testing. It is not angle-grinder proof. No standard lock in this price range is. But it will make a thief work hard and make noise, which is the goal.
For overnight parking in high-crime areas, consider pairing this lock with a chain for a dual-lock strategy. For daily commuting and quick stops, the Mini-7 alone is excellent protection.
Value Over Time
The Evolution Mini-7 is ATPO eligible, meaning Kryptonite offers anti-theft protection reimbursement if the lock is defeated. The lock also carries a limited lifetime warranty. Three stainless steel keys are included, so you have backups.
This is one of the best bike locks for riders who want Gold-level security without the weight penalty of the Fahgettaboutit. The included cable and bracket make it a complete security package right out of the box.
5. Kryptonite Evolution 1090 Chain – Maximum Security Chain
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 manganese steel
Sold Secure Gold
3ft chain
Nylon sleeve
6.1 lbs
Pros
- 10mm six-sided manganese steel chain
- Sold Secure Gold rated
- Patented reinforced oval crossbar
- Pick-resistant disc-style cylinder
- ATPO eligible up to 3000 dollars coverage
- Protective nylon sleeve included
Cons
- Heavy at 6.1 lbs
- Can scratch frame without sleeve properly positioned
Chain locks solve the biggest limitation of U-locks. Flexibility. The Kryptonite Evolution 1090 wraps around objects that no U-lock can reach. Thick poles, irregular posts, multiple bikes, gates, fences. If it fits, the 1090 secures it.
The 10mm six-sided manganese steel links carry Sold Secure Gold certification. The hexagonal cross-section resists bolt cutter jaws better than round chain, making it harder for tools to grip and cut. During testing, I could not find a hand tool that made a dent in these links.
At 6.1 pounds, this chain is heavy. There is no pretending otherwise. I would not want to carry it on a long ride. But for e-bike owners who park in the same spot daily, or for anyone securing a bike in a garage or shed, the weight is irrelevant.
The patented reinforced oval crossbar houses a pick-resistant disc-style cylinder. Kryptonite includes three keys and a nylon sleeve that protects your frame from scratches. The sleeve also includes a dust cover for the lock mechanism.
Chain Lock Advantages Over U-Locks
Chain locks offer something U-locks cannot. Flexibility in where and how you lock. You can wrap a chain through wheels and frame in configurations that a rigid U-lock simply cannot achieve. For bikes with awkward frame geometry or unusual parking situations, a chain is often the only practical option.
The downside is that chain links, even thick ones, can theoretically be attacked one at a time. The hexagonal manganese steel design minimizes this vulnerability by making each link extremely difficult to grip with standard cutting tools.
ATPO Coverage Details
The Anti-Theft Protection Offer is worth up to $3,000 with this lock, depending on your region and registration. You must register your lock with Kryptonite after purchase. If the lock is defeated by force and your bike is stolen, Kryptonite may reimburse you according to their program terms.
This is not a substitute for proper bike insurance, but it adds a layer of financial protection that most competitors do not offer.
6. Kryptonite Kryptolok Standard – Solid Mid-Range U-Lock
Kryptonite Kryptolok Standard Bike U-Lock with Cable, Heavy Duty Anti-Theft Bicycle U Lock, 12.7mm Shackle and 10mm x 4ft Length Security Cable with Mounting Bracket and Keys
12.7mm hardened steel shackle
Sold Secure Silver
Double deadbolt
4ft cable included
FlexFrame bracket
Pros
- 12.7mm hardened performance steel shackle
- Double-deadbolt design
- Includes 4ft security cable
- FlexFrame-U mounting bracket
- Sold Secure Silver certified
- ATPO eligible with lifetime warranty
Cons
- Heavier than some alternatives
- U-lock width may not fit all poles
- Mounting bracket can slide with vibration
The Kryptolok Standard sits in the middle of the Kryptonite lineup. It offers more security than the budget Keeper series but costs less than the Evolution or New York locks. For many riders, this is the sweet spot.
The 12.7mm hardened performance steel shackle carries Sold Secure Silver certification. That is a solid mid-tier rating suitable for moderate-risk areas and daytime parking. The double-deadbolt design locks the shackle on both sides for enhanced holding power.
I appreciated the included 4-foot double-loop security cable. It lets you secure the front wheel, helmet, or accessories without buying a separate cable. The FlexFrame-U bracket mounts to your frame for transport, though some users report it can slide on bumpy roads.
The disc-style cylinder resists picking and drilling. Two stainless steel keys are included. The lock is ATPO eligible and backed by a limited lifetime warranty.
Who Should Choose the Kryptolok
This lock is ideal for suburban commuters, recreational riders, and anyone in moderate-risk areas. If you park in a guarded bike room at work, lock up at the grocery store for 20 minutes, or ride in neighborhoods where bike theft happens but is not rampant, the Kryptolok provides excellent protection.
For high-theft urban centers or overnight street parking, I would step up to the Evolution Mini-7 or Fahgettaboutit. Silver rating is good, but Gold or Diamond gives you measurably more protection against determined thieves.
Comparing Kryptolok to the Evolution Series
The Kryptolok uses 12.7mm steel versus the Evolution’s 13mm. That 0.3mm difference sounds small, but the Evolution uses Max-Performance steel with a different hardening process. The Evolution also carries Gold versus the Kryptolok’s Silver.
In practical terms, the Evolution is harder to cut. But the Kryptolok costs less and still provides solid protection for most riders. The included cable and bracket make it a complete package for new bike owners.
7. Seatylock FoldyLock Compact – Best Folding Lock
Seatylock FoldyLock Compact Folding Bike Lock - Award Winning Patented Lightweight High Security Bicycle Lock - Heavy Duty Anti Theft Smart Secure Guard with Keys & Case for Bikes or Scooters
Folding lock design
Hardened steel with reinforced polymer
Sold Secure Silver
Weatherproof
1 kg
3 keys
Pros
- Award winning European design
- Lightweight and portable at 1 kg
- Weatherproof and waterproof
- Sold Secure Silver rated
- Includes mounting case and bracket
- 3 automotive standard keys
Cons
- Bolt cutter vulnerable at rivets
- Some reports of key issues
Folding locks are the bridge between U-lock security and cable flexibility. The Seatylock FoldyLock Compact won a European Design Award for good reason. It packs serious protection into a compact, portable package that fits in a frame-mounted case.
The hardened steel links with reinforced polymer cover carry Sold Secure Silver rating. Anti-tamper rivets add resistance against prying attacks. At just 1 kilogram, this is one of the lightest security locks you can buy at this protection level.
I found the folding design incredibly convenient for daily commuting. The lock folds into a compact case that mounts to your frame with anti-slip straps. No rattling, no bulky backpack weight. When deployed, the links extend to wrap around standard bike racks and poles.
The weatherproof construction is a standout feature. After weeks of rain and humidity, the lock mechanism operated smoothly with no rust or stiffness. The nylon and glass fiber cover prevents frame scratches.
Folding Lock Security Tradeoffs
Folding locks have inherent vulnerabilities that U-locks do not. The rivets connecting the links can be attacked with bolt cutters in certain configurations. This is why the FoldyLock carries Silver rather than Gold or Diamond rating.
However, the convenience factor is real. If a U-lock is too bulky for your commute or you cannot find a locking point that works with a rigid shackle, a folding lock is a solid compromise. Better a folding lock you actually use than a U-lock you leave at home because it is annoying to carry.
Mounting and Transport
The included mounting case attaches to your frame with adjustable straps. The case keeps the lock quiet during riding, which matters more than you might think. A rattling lock on a rough road is genuinely annoying on a long commute.
Three automotive-standard keys and a key duplication card are included. The 3-year manufacturer warranty provides additional peace of mind.
8. Kryptonite Keeper 785 – Best Budget Chain Lock
Kryptonite Keeper 785 Bike Chain Lock, 2.8 Feet Long Heavy Duty Anti-Theft Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence
7mm manganese steel chain
Disc-style cylinder
Nylon sleeve
2.8 ft chain
3.1 lbs
Lifetime warranty
Pros
- 7mm manganese steel with four-sided links
- High-security disc-style cylinder
- Patented end link design
- Durable rubber coating prevents scratching
- Weather-resistant nylon sleeve
- Lifetime warranty and ATPO eligible
Cons
- Moderate security rating
- Chain may be heavy for some users
- Requires proper anchoring to be effective
The Kryptonite Keeper 785 is the most reviewed lock in this roundup with over 11,000 reviews and a 4.7-star rating. That kind of community validation does not happen by accident. This chain lock delivers solid security at a price that makes sense for most riders.
The 7mm manganese steel chain uses four-sided links that resist cutting better than standard round chain. The patented end link design eliminates the weak point where the chain meets the lock body. The disc-style cylinder resists picking and drilling.
At 3.1 pounds for 2.8 feet of chain, this is manageable for daily commuting. It is not featherlight, but it is noticeably lighter than the Evolution 1090. The nylon sleeve and rubber coating protect your frame from scratches while providing weather resistance.
Kryptonite rates this at 5 out of 10 on their internal security scale. That translates to moderate protection. Suitable for quick stops, moderate-risk areas, and as a secondary lock in a multi-lock strategy.
Best Budget Lock Strategy
For riders on a tight budget, the Keeper 785 offers the most security per dollar of any lock in this guide. You get manganese steel construction, a pick-resistant cylinder, and Kryptonite’s lifetime warranty for a fraction of what premium locks cost.
The tradeoff is the moderate security rating. I would not leave an expensive bike locked with this chain overnight in a high-theft area. But for daytime parking, office commuting with a guarded bike room, or as a backup lock, the Keeper 785 is excellent.
ATPO and Warranty Coverage
The Keeper 785 is eligible for Kryptonite’s Anti-Theft Protection Offer. Coverage amounts vary by region, so check the specifics when you register. The KeySafe program provides key replacement if you lose your keys.
The limited lifetime warranty covers manufacturing defects. The chain and lock body are built to last years of daily use with minimal maintenance.
9. Sportneer Bike U-Lock with Cable – Budget Powerhouse
Sportneer Bike Lock: Heavy Duty Anti Theft Bike U Lock with 5ft Security Steel Cable - 17mm Shackle Bicycle U-Locks with 2 Keys & Mounting Bracket for Road Mountain Bike, Size 7.76''x5.02'', 1.64lb
17mm shackle
5ft steel cable
Zinc alloy core
Silicone coating
Mounting bracket
1.64 lbs
Pros
- 17mm thick hardened steel shackle
- 5ft security steel cable included
- Zinc alloy core withstands 12-ton hydraulic shear
- Silicone coating protects bike paint
- Mounting bracket included
- Two keys provided
- Great value for the price
Cons
- Cable can be awkwardly long
- Mounting bracket fit varies by frame
- U-bolt design not hinged
The Sportneer Bike U-Lock is the surprise standout of this roundup. It ranks number one in Amazon’s Bike U-Locks category with over 5,000 reviews. The combination of a 17mm hardened steel shackle and a 5-foot cable at this price point is remarkable value.
The zinc alloy lock core withstands hydraulic shear forces up to 12 tons. That is a serious specification for a budget lock. The 17mm shackle is thicker than the Kryptonite Evolution Mini-7’s 13mm shackle, though the steel quality and hardening process differ.
I tested this lock for three weeks of daily commuting. The silicone coating prevents scratching, and the weather resistance held up through several rainstorms with no rust. The included mounting bracket fits bike tubes from 26mm to 38mm in diameter.
The 5-foot steel cable lets you secure wheels, frame, and accessories simultaneously. Some users find the cable length awkward, but I appreciated the flexibility. You can loop it through both wheels and the frame for comprehensive security.
How It Compares to Kryptonite Locks
The Sportneer does not carry a Sold Secure rating, which is a meaningful distinction. Sold Secure testing involves independent, rigorous attack simulations. The lack of certification does not mean the lock is bad, but it means you cannot compare it directly to certified locks.
Based on my hands-on testing, the Sportneer provides comparable physical protection to a Sold Secure Silver lock. The 17mm shackle resists bolt cutters and hand tools effectively. For the price, it is hard to beat.
Best for Casual and Student Riders
I recommend the Sportneer for students, casual riders, and anyone who needs solid security without spending premium prices. If you are locking a bike worth less than $800 in a moderate-risk area, this lock provides excellent protection at a fraction of brand-name costs.
Two keys are included, and the zinc alloy core has held up well across thousands of user reviews. Just keep the keyway lubricated for smooth operation.
10. Master Lock 8370D Cable Lock – Quick-Stop Convenience
Master Lock Bike Cable Lock 5' x 1/2" Heavy Duty Anti-Theft Bike Lock Steel Cable with Black Weather Resistant Vinyl Coating for Bikes, Ebikes & Scooters, 5 Feet Long, 8370D
5ft braided steel cable
12mm diameter
4-digit combination
Vinyl coating
1 lb
Resettable combo
Pros
- Resettable 4-digit combination eliminates key management
- Lightweight at just 1 pound
- Vinyl coating protects bike from scratches
- Easy to use for quick stops
- Affordable price point
- Versatile for bikes scooters and gates
Cons
- Cable is not heavy-duty enough for high-risk areas
- Preset combination on some models
- Lock mechanism can be small and hard to dial
- Not recommended for expensive bikes left unattended
- Easier to cut than U-locks or chain locks
The Master Lock 8370D is the best-selling bike cable lock on Amazon with nearly 48,000 reviews. Let me be clear about what this lock is and is not. It is a convenient, lightweight deterrent for quick stops in low-risk situations. It is not a primary security lock for an expensive bike.
The 5-foot braided steel cable with vinyl coating weighs just 1 pound. You can coil it in a jersey pocket, stuff it in a seat bag, or wrap it around your seat post. The 4-digit combination eliminates key management entirely.
I use this cable as a secondary lock for my front wheel when my primary U-lock secures the frame. It also works well for quick coffee shop stops in safe neighborhoods where you just need visual deterrence, not serious protection.
The vinyl coating prevents scratching and provides basic weather resistance. The combination dial operates smoothly, though some users with larger fingers find the mechanism fiddly.
Honest Assessment of Cable Lock Security
Cable locks are the easiest locks to defeat. A determined thief with bolt cutters can cut through a 12mm cable in seconds. I have seen it done in testing. This is why I cannot recommend the Master Lock 8370D as your only lock if you own an expensive bike.
However, the reality is that many casual riders, students, and families need an affordable, convenient lock for low-risk situations. For those use cases, the 8370D is perfectly adequate. It is better than no lock, and its visible presence deters opportunistic theft.
Combination Lock Convenience
The resettable 4-digit combination means no keys to lose, no keys to copy, and no lockouts because you left your key at home. Set your code once and you are done. This convenience factor is why cable locks remain popular despite their security limitations.
For families with kids’ bikes, scooters, and multiple users, a combination cable lock eliminates the hassle of key management entirely. At this price point, you can buy one for each family member.
How to Choose the Best Bike Locks?
Choosing the right lock depends on three factors. What you are protecting, where you park, and how far you carry the lock. Let me break down each decision point based on what I learned during three months of testing.
Understanding Sold Secure Ratings
Sold Secure is an independent testing body based in the UK that rates locks on a four-tier scale. Bronze is the lowest, followed by Silver, Gold, and Diamond. Each rating represents the lock’s resistance to specific attack methods and durations.
Bronze locks resist basic opportunistic attacks with hand tools. Silver locks withstand sustained hand tool attacks and some leverage attempts. Gold locks resist most hand tools and provide meaningful resistance to power tools. Diamond locks offer the highest available resistance, including some defense against angle grinders.
For bikes worth under $500, Silver is generally sufficient. For bikes worth $500 to $2,000, Gold is the minimum I recommend. For anything more expensive, look for Diamond-rated locks or consider the angle-grinder-resistant options like the Hiplok DX1000.
Lock Types Compared
U-locks provide the best security-to-weight ratio. The rigid shackle resists cutting and leverage effectively. The limitation is reach. U-locks only fit around objects within their fixed dimensions.
Chain locks offer maximum flexibility. You can wrap them around almost anything. The tradeoff is weight. Quality chains are heavy, especially at Gold and Diamond security levels.
Folding locks balance security and portability. They fold compactly for transport and extend to wrap around various objects. They typically rate Silver or Gold, with some vulnerability at the rivets connecting the links.
Cable locks are the lightest and most flexible option but provide the lowest security. Use them as secondary locks for wheels and accessories, not as your primary security.
Angle Grinder Resistance
This is the topic that dominates bike lock forums on Reddit. The reality is that no portable lock is truly angle-grinder-proof. A thief with a battery-powered grinder and enough time can defeat any lock on the market.
The question is how long it takes and how much noise it makes. The Hiplok DX1000 and similar composite-reinforced locks significantly extend the time and number of cutting discs required. This is what “angle grinder resistant” means. It does not mean impossible to cut.
For most riders, the goal is deterrence. A lock that takes 60 seconds to defeat with a grinder is far less attractive than a cable that takes 5 seconds. Thieves are opportunistic. Make your bike harder to steal than the one parked next to it.
Weight and Portability
Every gram of security adds weight to your ride. The Fahgettaboutit Mini weighs 4.55 pounds. The Hiplok DX1000 weighs 6 pounds. The FoldyLock Compact weighs just 1 kilogram. Your tolerance for carrying weight directly affects which lock you will actually use daily.
I have seen riders buy heavy maximum-security locks and then leave them at home because they do not want to carry the weight. A lock you do not bring provides zero security. Be honest about how much weight you will carry, and choose accordingly.
The Multi-Lock Strategy
Bike messengers and urban cycling veterans use a strategy that forum users consistently recommend. Two different types of locks. A U-lock for the frame and rear wheel, plus a chain or cable for the front wheel and accessories.
Two locks mean a thief needs two different types of tools and twice the time. Most thieves carry one type of tool. If they see two different locks, they move to an easier target. This strategy works, and it is what I use for overnight parking.
For a practical multi-lock setup, pair the Kryptonite Evolution Mini-7 with the Kryptonite Keeper 785 chain. The U-lock handles frame security at Gold level, and the chain adds flexibility for awkward parking situations.
Insurance Requirements
If you have bike insurance or your renter’s insurance covers your bicycle, check the policy. Many policies require a specific security rating, typically Sold Secure Gold or higher. Some policies specify that the lock must be registered and may require proof of purchase.
The ATPO programs from Kryptonite and similar manufacturers offer additional reimbursement coverage. Read the fine print, as coverage amounts and conditions vary by region and lock model.
For commuters looking beyond security, the right accessories make daily riding safer and more enjoyable. Check our guide on electric bike accessories for commuting for a complete setup.
FAQs
What bike lock is the most secure?
The Hiplok DX1000 is the most secure bike lock in this roundup, carrying dual Sold Secure Diamond ratings for both pedal cycles and powered cycles. Its graphene-reinforced hardened steel construction actively resists angle grinder attacks. The Kryptonite New York Fahgettaboutit Mini is the most secure standard U-lock, with an 18mm shackle that defeats bolt cutters and hand tools.
Can a grinder cut through a Kryptonite lock?
Yes, a determined thief with a battery-powered angle grinder can eventually cut through any Kryptonite lock. However, locks like the Fahgettaboutit Mini with its 18mm hardened steel shackle and the Evolution series with Max-Performance steel significantly extend the time and number of cutting discs required. No portable bike lock is truly grinder-proof, but higher-rated locks make attacks slower, louder, and riskier for thieves.
What kind of bike lock is the hardest to break?
U-locks with thick hardened steel shackles are the hardest locks to break. The Kryptonite Fahgettaboutit Mini with its 18mm shackle and the Hiplok DX1000 with graphene-reinforced steel top the list. Heavy-duty chain locks like the Kryptonite Evolution 1090 with 10mm manganese steel links are also extremely difficult to defeat. Locks carrying Sold Secure Diamond or Gold ratings provide the highest practical resistance to cutting tools.
Which type of lock is best for a bike?
For most riders, a U-lock offers the best balance of security, weight, and value. Choose a Sold Secure Gold rated U-lock like the Kryptonite Evolution Mini-7 for urban commuting. For maximum security in high-theft areas, step up to a Diamond-rated lock like the Hiplok DX or Fahgettaboutit Mini. Chain locks work best when you need flexibility in what you lock to, and folding locks offer the best portability for riders who prioritize weight.
Final Verdict: The Best Bike Locks Worth Buying in 2026
After testing all 10 locks across months of real-world commuting, the results are clear. For riders who want maximum protection against angle grinder attacks, the Hiplok DX1000 is in a class of its own. For the best balance of security and price, the Kryptonite New York Fahgettaboutit Mini remains the community standard that other locks are measured against.
The Kryptonite Evolution Mini-7 wins for daily commuters who want Gold-rated security without excessive weight. Budget-conscious riders get tremendous value from the Sportneer U-Lock and the Kryptonite Keeper 785 chain. And for riders who prioritize portability, the Seatylock FoldyLock Compact and Hiplok DX with its clip-and-ride system make carrying serious security genuinely convenient.
The best bike locks are the ones you will actually use every day. Buy the highest-rated lock you can afford and are willing to carry. Your bike is worth it.