By Nora FairbanksUpdated November 2026
Finding the best motorcycle bike lock comes down to matching the lock’s strength, weight and mounting style to how and where you park. A lock that works well for a quick stop at a café may not hold up for an overnight stay in an apartment garage, and a heavy chain that is perfect for a parked scooter can be a burden on a light bike. The six locks below were selected by comparing manufacturer specifications, brand reputation for security, and the patterns owners tend to report, including shackle thickness, cable or chain diameter, lock type and included accessories. No product here was physically tested by the author; the comparison is built from listing details and widely discussed owner experiences.
Our top picks at a glance
- 1
TOP CHOICEBest overallKryptonite Keeper 712 Bike Chain LockView on Amazon - 2
TOP CHOICEBest for heavy-duty parkingNDakter Bike Locks Heavy Duty Anti Theft U LockView on Amazon - 3
TOP CHOICEBest for quick stopsAnti-Theft Waterproof 110 dB Alarm Disc LockView on Amazon - 4
Best for long chain coverageKryptonite Keeper 785 Bike Chain LockView on Amazon - 5
Best budget pickTitanker Heavy Duty Bicycle Lock ChainView on Amazon - 6
Best for road and mountain bikesSportneer Bike Lock U-Lock with CableView on Amazon
Selection criteria: material strength, lock type (disc, U-lock, chain or cable), portability, mounting options, and whether the lock is designed for motorcycles, scooters or e-bikes.
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| Kryptonite Keeper 712 Bike Chain Lock | Best overall | Hardened steel 7mm links, 4 ft length |
| NDakter Bike Locks Heavy Duty U Lock | Heavy-duty parking | 18mm thick U-shackle with security chain |
| Anti-Theft Waterproof Alarm Disc Lock | Quick stops | 110 dB alarm with 5 ft reminder cable |
| Kryptonite Keeper 785 Bike Chain Lock | Long chain coverage | 85 cm manganese steel links, 2.8 ft chain |
| Titanker Heavy Duty Bicycle Lock Chain | Budget buyers | 6mm thick chain with keys |
| Sportneer Bike Lock U-Lock | Road and mountain bikes | 17mm shackle with steel cable and bracket |
Kryptonite Keeper 712 Bike Chain Lock
Weather-resistant, 120cm long, hardened steel 7mm links, 2 keys, 5/10 security rating, for motorcycles, scooters, or gates Kryptonite Keeper 712 Bike Chain Lock, 4ft Heavy Duty Anti-Theft Lock
Best for: Overall security with a balance of weight and length. For another angle, check out 8 Best Replacement Bike Lock Keys for Every Rider (2026).
This chain lock suits riders who want a flexible, weather-resistant lock that can wrap around a fixed post, a motorcycle frame and a rear wheel. Its 4-foot length gives room to secure more than one point.
Key specs
- Hardened steel links, 7mm thickness
- 120 cm (about 4 ft) length
- Two keys included
- Weather-resistant finish
Pros
- Thick links resist common cutting tools better than thin chain
- Long enough to loop through a wheel and a fixed object
- Keyed cylinder is simple to operate with gloves
Cons
- Heavier to carry than a cable or disc lock
- Chain can scratch paint if not wrapped carefully
Bottom line: A strong all-round choice for riders who park in public spaces and want one lock that handles most situations.
NDakter Bike Locks Heavy Duty Anti Theft U Lock
NDakter Bike Locks Heavy Duty Anti Theft 18mm Thick, Motorcycle U Lock with 4FT x 6mm Security Chain, 3Keys Large U-Shape Electric Bicycle Wheel Lock for Ebike, Escooter, Fat-Tire Dirt-Bike, Tricycle
Best for: Heavy-duty parking where a U-shaped shackle is needed.
Riders with electric bikes, scooters and dirt bikes often choose a U-lock with a companion chain. This model pairs a thick shackle with a long security chain for securing the frame and wheels together.
Key specs
- 18mm thick U-shackle
- 4 ft x 6mm security chain
- Three keys included
Pros
- Thick shackle is harder to leverage open
- Chain adds reach for securing wheels and frame together
- Three keys reduce the risk of being locked out
Cons
- Bulky to carry on a motorcycle without a mount
- Heavier than most cable or disc options
Bottom line: Best for riders who leave their bike in public areas overnight and need maximum shackle strength.
Anti-Theft Waterproof 110 dB Alarm Disc Lock
Anti-Theft Waterproof 110 dB 7mm Pin 5ft Reminder Cable for Motorcycles Bike Scooter Carry Pouch (Black) Alarm Disc Lock Motorcycle Disc Brake Lock
Best for: Quick stops and a visible deterrent.
This disc lock with a built-in reminder cable suits riders who make short stops and want to deter opportunistic thieves. The alarm sound can draw attention, which many owners consider part of its value.
Key specs
- 110 dB alarm
- 7mm pin
- 5 ft reminder cable
- Carry pouch included
Pros
- Compact and easy to stash in a pouch
- Alarm can deter quick grab attempts
- Lightweight for daily carry
Cons
- Disc locks alone offer less protection against sustained attacks
- Alarm battery should be checked periodically
Bottom line: Pair it with a chain or U-lock for longer stops; on its own it suits short, supervised parking.
Kryptonite Keeper 785 Bike Chain Lock
7mm Manganese Steel Links, 85cm Length, Disc-Style Cylinder, Nylon Sleeve for Motorcycle, Scooter, Gate, Fence Kryptonite Keeper 785 Bike Chain Lock, 2.8 ft Heavy Duty Anti-Theft Lock
Best for: Long chain coverage around gates, posts and frames.
This chain lock uses manganese steel links in a disc-style cylinder housing. It is designed for securing motorcycles and scooters to fixed objects and works well where a shorter chain would not reach.
Key specs
- 7mm manganese steel links
- 85 cm length (about 2.8 ft)
- Nylon sleeve to protect finish
Pros
- Nylon sleeve reduces paint damage
- Disc-style cylinder is durable and easy to operate
- Good reach for securing to fences or gates
Cons
- Shorter than the 712 model, so less wrap room
- Heavier than cable locks
Bottom line: A solid option for riders who need a chain that works with fences and gates as well as bike frames.
Titanker Heavy Duty Bicycle Lock Chain
Titanker Heavy Duty Bicycle Lock Chain with Keys – 3 Feet Anti-Theft Lock for Bikes, Motorcycles, Doors, Gates, Fences, Grills (6mm Thick)
Best for: Budget-conscious riders who still want a chain lock.
This chain lock is a budget pick for riders who want a flexible lock for bikes, motorcycles and gates without investing in a premium model. It suits lighter-duty parking and secondary locking.
Key specs
- 6mm thick chain
- 3 ft length
- Keys included
Pros
- Lightweight for its length
- Straightforward keyed operation
- Versatile for bikes, gates and grills
Cons
- Thinner links offer less cut resistance than 7mm chains
- Shorter length limits how much you can wrap
Bottom line: Good for low-risk parking or as a second lock; consider a thicker chain for overnight public parking.
Sportneer Bike Lock U-Lock with Cable
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
Best for: Road and mountain bikes that need a compact U-lock.
This U-lock with a steel cable is aimed at riders who want a lighter, more compact setup for bicycles and lightweight motorcycles. The bracket helps keep the lock off the frame when riding.
Key specs
- 17mm shackle
- Steel cable included
- Two keys and mounting bracket
- Approximately 1.64 lb
Pros
- Lighter than most U-locks
- Bracket helps keep the lock in place while riding
- Cable adds flexibility for wheels and seat posts
Cons
- Shackle is thinner than heavy-duty motorcycle U-locks
- Cable is less resistant to cutting than a chain
Bottom line: A practical pick for riders who want a light, bracket-mounted U-lock for everyday use rather than maximum-strength parking.
Buying Guide
Lock Type: Chain, U-Lock, Disc or Cable
Each lock type has a different role. U-locks have the strongest shackles and are hard to leverage open. Chains offer flexibility and reach. Disc locks deter quick grabs but are weaker alone. Cables are light but easiest to cut.
Good picks for this: Kryptonite Keeper 712 Bike Chain Lock, NDakter Bike Locks Heavy Duty U Lock
Material Thickness and Cut Resistance
Check the stated link or shackle diameter. Thicker hardened steel is harder to cut with common hand tools. Manufacturers often list thickness in millimeters; use this as the first comparison point.
Good picks for this: Kryptonite Keeper 785 Bike Chain Lock, Titanker Heavy Duty Bicycle Lock Chain
Length and Reach
Measure the objects you will secure to. A chain should loop through the wheel, frame and a fixed post with some slack. Shorter chains are lighter but may not reach around larger objects.
Good picks for this: Kryptonite Keeper 712 Bike Chain Lock, Kryptonite Keeper 785 Bike Chain Lock
Weight and Portability
If you carry the lock daily, weight matters. A heavy chain may be impractical on a light bicycle, while a motorcycle can carry more weight. Consider where you will store the lock when riding.
Good picks for this: Anti-Theft Waterproof Alarm Disc Lock, Sportneer Bike Lock U-Lock with Cable
Mounting and Storage
Look for included brackets or mounts. A lock that rattles or sits awkwardly while riding is more likely to be left at home. Check that the mount fits your frame or seat tube.
Good picks for this: Sportneer Bike Lock U-Lock with Cable, NDakter Bike Locks Heavy Duty U Lock
Weather and Durability
Riders in wet or salty climates should look for weather-resistant finishes and sealed cylinders. Stainless or coated steel resists corrosion better than bare metal over time.
Good picks for this: Kryptonite Keeper 712 Bike Chain Lock, Anti-Theft Waterproof Alarm Disc Lock
Care and Maintenance
Lubricate the keyway periodically with a dry lubricant suited to locks. Keep spare keys in a safe place, and inspect chains for rust or damage. Check the alarm battery on alarm locks at regular intervals.
Good picks for this: Kryptonite Keeper 785 Bike Chain Lock, Anti-Theft Waterproof Alarm Disc Lock
FAQ
Is a chain lock better than a U-lock for a motorcycle?
Neither is universally better. U-locks have stronger shackles, while chains offer more flexibility and reach. Many riders use both: a U-lock for the frame and wheel, and a chain for a fixed object.
What is a good thickness for a motorcycle lock?
Many heavy-duty options use 7mm or thicker chain links, and U-locks often have shackles around 14mm to 18mm. Thicker generally means more cut resistance, but also more weight.
Can I lock a motorcycle with a disc lock alone?
A disc lock can deter casual theft, but it is not enough on its own for unattended parking. Pair it with a chain or U-lock for better protection.
How do I keep a bike lock from rusting?
Dry the lock after rain or washing, apply a light lubricant to the keyway, and store it indoors when possible. Check chains for surface rust and replace damaged parts.
Should I use a lock with an alarm?
An alarm can attract attention and deter opportunistic theft, especially in busy areas. Alarm locks need batteries, so check them regularly. They do not replace a strong primary lock.
How long should a motorcycle chain be?
Choose a length that loops through your wheel or frame and a fixed object with room to spare. Measure both the bike and the anchor point before buying.
Conclusion
For most riders, the Kryptonite Keeper 712 Bike Chain Lock offers a sensible balance of strength, reach and weight. Riders who park in public areas overnight may prefer the NDakter Bike Locks Heavy Duty U Lock. Those who make short stops will find the Anti-Theft Waterproof Alarm Disc Lock useful as a deterrent, ideally paired with a stronger lock. Budget buyers can consider the Titanker chain, and riders of lighter bicycles may prefer the Sportneer U-lock. Match the lock to your parking situation rather than choosing on price or appearance alone.
Sources
- Consumer product safety guidance on preventing theft and injury related to bicycles and riding equipment (cpsc.gov)
- Motorcycle safety information and rider guidance for protecting your vehicle (nhtsa.gov)
Related reading
- Top 6 Best Electric Bike Locks for E-Bikes and Commuters (2026)
- Bike Disc Lock with Alarm: 7 Best Picks for Commuters and Riders (2026)
- Best Bike Lock for Ebike: 7 Factors and Picks That Keep Your Battery Bike Safe
About Nora Fairbanks
Nora puts together our bike accessories guides, digging through specifications, manufacturer details and owner reviews so you don't have to.
