Miles SinclairBy Miles Sinclair

Updated November 2026

Finding the right lock for e bike ownership comes down to balancing security, weight and convenience, because an electric bike is a higher-value target than a standard bicycle and often carries a battery that thieves want as much as the frame. This guide compares six locks from the Amazon US catalog, weighing each one on its shackle or chain strength, length and fit for the way you ride. We looked at manufacturer specifications, brand reputation and the patterns owners tend to mention in their feedback, and we did not run physical break-in tests ourselves. Use this as a starting point, then match the lock to where and how you park.

Our top picks at a glance

  1. 1Sportneer Bike Lock Heavy Duty U-LockTOP CHOICEBest overallSportneer Bike Lock Heavy Duty U-LockView on Amazon
  2. 2Sportneer Bike Chain Lock 2.72 ftTOP CHOICEBest for tight spacesSportneer Bike Chain Lock 2.72 ftView on Amazon
  3. 3Master Lock 8143D Bike Cable LockTOP CHOICEBest for quick stopsMaster Lock 8143D Bike Cable LockView on Amazon
  4. 4Sportneer 5-Digit Combination Chain LockBest for long-term parkingSportneer 5-Digit Combination Chain LockView on Amazon
  5. 5Master Lock 8122D Cable LockBest budget pickMaster Lock 8122D Cable LockView on Amazon
  6. 6GRIFEMA Keyed Bike Chain Lock 4 ftBest for heavy-duty chain securityGRIFEMA Keyed Bike Chain Lock 4 ftView on Amazon

Our Top Picks

Quick Comparison

Product Best for Key feature
Sportneer Bike Lock Heavy Duty U-Lock Commuters parking in racks 17mm shackle with 5 ft security cable
Sportneer Bike Chain Lock 2.72 ft Compact storage and short stops Waterproof chain with three keys
Master Lock 8143D Bike Cable Lock Quick stops with combination access 4-digit combination, vinyl-coated cable
Sportneer Combination Chain Lock Long-term parking without keys 5-digit keyless combination
Master Lock 8122D Cable Lock Budget-minded riders 6 ft resettable combination cable
GRIFEMA Keyed Chain Lock Heavier security for e-bikes 4 ft hardened steel chain with protective sleeve

Sportneer Bike Lock Heavy Duty U-Lock

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

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

View on Amazon

Best for: Commuters who need a U-lock-and-cable combination for racks and poles

This lock suits riders who park in public racks and want a rigid shackle at the frame and a flexible cable for the wheel. The U-shackle is the main security element, so it fits best where you can position it tightly around a fixed object.

Key specs

  • 17 mm shackle diameter (from the listing)
  • 5 ft security steel cable (from the listing)
  • Includes 2 keys and a mounting bracket (from the listing)
  • Approximately 1.64 lb total weight (from the listing)

Pros

  • Shackle thickness is well suited to frame and wheel locking
  • Cable extends to reach wheels and rear frame points
  • Bracket keeps the lock off the frame while riding

Cons

  • U-shackle size limits what it can loop around
  • Owners often mention that the cable is thinner than a chain, so it is less suited to heavy-duty parking

Bottom line: A strong all-round choice for commuters who park in racks and want a lighter, portable setup.

View on Amazon

Sportneer Bike Chain Lock 2.72 ft

Bike Chain Lock, Heavy Duty Anti-Theft Bicycle Chain Lock, 2.72 Ft Security Bike Locks with 3 Keys, Waterproof Lock Chain for Bike, Bicycle, Scooter, Motorcycle, Door, Gate, Fence

Bike Chain Lock, Heavy Duty Anti-Theft Bicycle Chain Lock, 2.72 Ft Security Bike Locks with 3 Keys, Waterproof Lock Chain for Bike, Bicycle, Scooter, Motorcycle, Door, Gate, Fence

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Best for: Compact storage and short stops where space is limited

A shorter chain makes sense if you lock to a single post or inside a building where a long chain would be awkward. It is also useful for securing a bike to a motorcycle-style anchor point.

Key specs

  • 2.72 ft chain length (from the listing)
  • Waterproof construction (from the listing)
  • Three keys included (from the listing)

Pros

  • Short length keeps the lock manageable in a bag or on a rack
  • Three keys reduce the risk of being locked out
  • Works for bikes, scooters and gates per the listing

Cons

  • Limited reach means fewer anchor points
  • Shorter chains are harder to use on large racks

Bottom line: Best for riders who mostly lock to a single post and want something compact.

View on Amazon

Master Lock 8143D Bike Cable Lock

Combo Bicycle Lock Metal Cable Black Vinyl Coating, Scooters, eBikes, Outdoor Gear 8143D Master Lock Bike Cable Lock 4'x 5/16" 4-Digit Combination,

Combo Bicycle Lock Metal Cable Black Vinyl Coating, Scooters, eBikes, Outdoor Gear 8143D Master Lock Bike Cable Lock 4'x 5/16" 4-Digit Combination,

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Best for: Quick stops where you want keyless access

This cable lock is aimed at short errands and situations where you need to lock a wheel or frame briefly. It is not the lock to rely on for overnight street parking.

Key specs

  • 4 ft cable length (from the listing)
  • 5/16 inch cable diameter (from the listing)
  • 4-digit combination (from the listing)
  • Black vinyl coating (from the listing)

Pros

  • Combination lock means no keys to lose
  • Vinyl coating helps protect paint on the frame
  • Lightweight and easy to carry

Cons

  • Cable lock offers less resistance to cutting than chains or U-locks
  • Shorter length limits anchor options

Bottom line: A convenient secondary lock for quick stops, not a primary lock for high-theft areas.

View on Amazon

Sportneer 5-Digit Combination Chain Lock

Sportneer Bike Lock: 5 Digit Combination High Security Anti Theft Bike Chain Lock - 3.2/3.6/4ft Heavy Duty Keyless Bicycle Lock for Bike, Motorcycle, Scooter, Door & Gate - 4/6mm Thick, Easy to Use

Sportneer Bike Lock: 5 Digit Combination High Security Anti Theft Bike Chain Lock – 3.2/3.6/4ft Heavy Duty Keyless Bicycle Lock for Bike, Motorcycle, Scooter, Door & Gate – 4/6mm Thick, Easy to Use

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Best for: Long-term parking without carrying keys

A combination chain works well for riders who leave their e-bike parked for long stretches and want to avoid key management. Owners often report that the thicker chain links feel more reassuring than cable for overnight use.

Key specs

  • 5-digit combination (from the listing)
  • Available in 3.2, 3.6 and 4 ft lengths (from the listing)
  • 4 mm to 6 mm link thickness (from the listing)

Pros

  • Keyless operation suits daily use
  • Chain links add resistance to cutting compared with cable
  • Several length options to match your rack

Cons

  • Combination dials can be slower to open in the cold
  • Heavier than cable options

Bottom line: A solid pick for riders who park outside regularly and prefer a combination over keys.

View on Amazon

Master Lock 8122D Cable Lock

Heavy Duty Anti Theft Cable Bike Lock, Black Vinyl Coated Steel Combo Bike Lock for Scooters, eBikes & Outdoor Gear Master Lock Bike Cable Lock 6'x 1/2" 4-Digit Combination Resettable 8122D

Heavy Duty Anti Theft Cable Bike Lock, Black Vinyl Coated Steel Combo Bike Lock for Scooters, eBikes & Outdoor Gear Master Lock Bike Cable Lock 6'x 1/2" 4-Digit Combination Resettable 8122D

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Best for: Budget-minded riders who want a resettable combination

This cable lock offers a longer reach than the 4 ft option and a resettable code, which is useful if you want to change the combination after sharing it.

Key specs

  • 6 ft cable length (from the listing)
  • 1/2 inch cable diameter (from the listing)
  • 4-digit resettable combination (from the listing)
  • Black vinyl-coated steel (from the listing)

Pros

  • Longer cable reaches more anchor points
  • Resettable code is handy for shared use
  • Thicker cable than the 8143D model

Cons

  • Cable can still be cut with the right tools
  • Not as secure as a U-lock for overnight street parking

Bottom line: A practical, low-commitment option for lighter-duty parking and secondary locking.

View on Amazon

GRIFEMA Keyed Bike Chain Lock 4 ft

GRIFEMA Keyed Bike Chain Lock, Heavy Duty Anti-Theft Security Lock, 4FT Hardened Steel Chain with Protective Sleeve for Bicycle, E-Bike, Motorcycle, Scooter, Gate & Outdoor Use

GRIFEMA Keyed Bike Chain Lock, Heavy Duty Anti-Theft Security Lock, 4FT Hardened Steel Chain with Protective Sleeve for Bicycle, E-Bike, Motorcycle, Scooter, Gate & Outdoor Use

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Best for: Heavier security for e-bikes and motorcycles

A hardened steel chain with a protective sleeve is the kind of setup riders choose when the bike carries a valuable battery and they park in busy areas. It is heavier, so it suits riders who can carry the weight.

Key specs

  • 4 ft hardened steel chain (from the listing)
  • Protective sleeve (from the listing)
  • Keyed operation (from the listing)

Pros

  • Hardened steel and sleeve add resistance to cutting
  • Protective sleeve reduces frame scratches
  • Suitable for e-bikes, scooters and motorcycles per the listing

Cons

  • Heavier than cable and short chain options
  • Keyed operation means you must keep track of keys

Bottom line: The best fit for riders prioritizing chain-level security over weight.

View on Amazon

Buying Guide

Lock Type: U-Lock, Chain or Cable

U-locks offer the best resistance at the shackle, chains spread protection along their length, and cable locks are the lightest but easiest to cut. For an e-bike, most riders pair a U-lock or chain for the frame with a cable for the wheel.

Good picks for this: Sportneer Bike Lock Heavy Duty U-Lock, GRIFEMA Keyed Bike Chain Lock

Shackle or Chain Thickness

Thicker shackles and links resist cutting and prying better. Check the diameter in the listing and compare it with the tools a thief would need. Owners often report that a 17 mm shackle feels solid for typical urban use.

Good picks for this: Sportneer Bike Lock Heavy Duty U-Lock, Sportneer 5-Digit Combination Chain Lock

Length and Anchor Points

Measure the posts, racks and fences you use most. A lock that is too short will not reach a solid anchor, and one that is too long can drag and scratch the paint. Four feet is a common length for racks, while 2.5 to 3 feet suits single posts.

Good picks for this: Sportneer Bike Chain Lock 2.72 ft, Master Lock 8122D Cable Lock

Weight and Portability

Carrying a heavy lock every day adds up. Balance the lock’s weight against how often you ride and whether you can mount it on the frame. Lighter locks are easier to carry but generally offer less protection.

Good picks for this: Master Lock 8143D Bike Cable Lock, Sportneer Bike Lock Heavy Duty U-Lock

Locking Mechanism: Key or Combination

Keyed locks are quick to operate but require you to keep track of keys. Combination locks avoid keys entirely, though dials can be slower in cold weather. Resettable codes are useful when sharing a lock.

Good picks for this: Sportneer 5-Digit Combination Chain Lock, Master Lock 8122D Cable Lock

Durability and Weather Resistance

Look for vinyl coatings, protective sleeves and waterproof construction if you ride in rain or road salt. Coatings protect both the lock and your frame from scratches.

Good picks for this: GRIFEMA Keyed Bike Chain Lock, Sportneer Bike Chain Lock 2.72 ft

Care and Maintenance

Keep the lock clean, lubricate keyed cylinders sparingly, and store spare keys somewhere safe. Check the cable or chain for rust after wet weather, especially at the joints. If a lock fails or you lose keys, contact the manufacturer or a locksmith for a replacement rather than attempting to force it.

Good picks for this: GRIFEMA Keyed Bike Chain Lock, Master Lock 8143D Bike Cable Lock

FAQ

What is the best lock for e bike parking on the street?

For street parking, a U-lock or hardened chain used to secure the frame to a fixed object is generally recommended. A cable can supplement it for the wheel, but should not be the only lock.

Do I need two locks for an e-bike?

Many riders use two locks: a primary U-lock or chain for the frame and a secondary cable for the wheels. This adds coverage and makes it harder for a thief to remove the bike in one piece.

Can a cable lock protect an e-bike?

A cable lock is useful for brief stops and secondary locking, but it is generally easier to cut than a U-lock or chain. Consider it a supplement rather than a primary defense.

How do I choose the right length?

Measure the anchor points where you park most often. Make sure the lock can loop through the frame and the rack or post without excessive slack, which can make it easier to pry or cut.

Should I remove the battery when locking my e-bike?

Removing a removable battery when parking for long periods is a common precaution, since the battery is often the most valuable component. Check your manufacturer’s guidance for safe removal and storage.

Are combination locks as secure as keyed locks?

Security depends mainly on the materials and design rather than the mechanism alone. Combination locks avoid key loss but can be less convenient in cold weather. Compare the shackle or chain specifications before deciding.

Conclusion

Choosing a lock for e bike use is about matching security to where you park. The Sportneer Bike Lock U-Lock suits commuters using racks, the GRIFEMA Keyed Chain Lock suits riders who prioritize chain-level security, and the Sportneer combination chain suits long-term parking without keys. The Master Lock cable options are best used as secondary locks for quick stops or wheel security, and the shorter Sportneer chain fits riders with limited anchor points. Assess your parking spots, then pick the lock that fits them.

Sources

Miles Sinclair

About Miles Sinclair

Miles Sinclair is part of our editorial team and reviews and edits our bike accessories guides, checking product details against manufacturer specifications and owner feedback.