Best Bike Locks for E-Bikes: U-Locks, Folding Locks & Chain Locks

Best Bike Locks for E-Bikes: U-Locks, Folding Locks, Chain Locks — Security Ratings, Weight, and Price

E-bikes are expensive targets. A quality electric bike costs $2,000 to $8,000 AUD, and theft is a persistent problem in Australian cities. According to state police data, bicycle theft rates remain high in Melbourne, Sydney, Brisbane, and Perth, and e-bikes are disproportionately targeted because of their resale value. A good lock is not optional. This guide covers the lock types that actually protect your investment.

How Lock Security Ratings Work

Two independent testing organisations rate bicycle lock security:

Sold Secure is a UK-based testing body used worldwide. Their ratings are:

• Bronze: Resists basic attack tools for one minute. Deters opportunistic theft only.
• Silver: Resists intermediate tools for three minutes. Reasonable everyday security.
• Gold: Resists advanced tools for five minutes. Recommended minimum for e-bikes.
• Diamond: The highest rating. Resists sustained attack with power tools. Best available protection.

ART (Automotive Research and Testing) is a Dutch certification commonly seen on European locks. Ratings range from 1 star (basic) to 5 stars (maximum security).

For an e-bike in Australia, aim for Sold Secure Gold or ART 3 stars as a minimum. Anything less is not adequate for the value of what you are protecting.

U-Locks (D-Locks)

U-locks are the backbone of serious bicycle security. They consist of a hardened steel shackle in a U shape that locks into a crossbar.

Advantages:

• Extremely resistant to bolt cutters, leverage attacks, and prying
• Compact and relatively lightweight for the security level
• Quick to lock and unlock
• Well-proven design with decades of development

Disadvantages:

• Limited internal space restricts what you can lock to
• Can be defeated by angle grinder (though this is loud and conspicuous)
• Less flexible than chains for locking through frame and wheels

Recommended U-locks for e-bikes in Australia:

Kryptonite New York Standard — Sold Secure Gold. 16mm hardened steel shackle, double deadlock mechanism. Heavy at 2.06kg but provides excellent security. Around $120 to $150 AUD.

Kryptonite Evolution Mini-7 — Sold Secure Gold. Smaller profile at 3.25 x 7 inches, which is actually a security advantage because the tight fit leaves no room for a leverage attack. 13mm shackle, 1.59kg. Around $80 to $110 AUD. A top choice for commuters.

Abus Granit X-Plus 540 — Sold Secure Gold, ART 3 stars. 13mm parabolic shackle, ABUS Power Cell technology. 1.49kg. Around $110 to $140 AUD.

Abus Granit CityChain X-Plus 1060 — This is actually a chain lock in a U-lock-style mounting bracket, but worth mentioning for its Sold Secure Gold rating. 10mm hexagonal chain links. Around $130 to $170 AUD.

Folding Locks

Folding locks use multiple flat steel bars connected by rivets, folding into a compact package that mounts on the frame.

Advantages:

• Compact when folded, mounts neatly on the bike frame
• More flexible than U-locks for reaching awkward locking points
• Good security at the higher end of the market

Disadvantages:

• The riveted joints are potential weak points
• More complex mechanism means more potential failure points
• Premium security folding locks are expensive

Recommended folding locks:

Abus Bordo Granit X-Plus 6500 — Sold Secure Gold. 5.5mm steel bars with a soft coating to prevent frame scratches. 1.58kg. Folds to about 22cm. Around $130 to $170 AUD. The best folding lock available.

Kryptonite Kryptolok 685 — Sold Secure Silver. A budget-friendly option at around $60 to $80 AUD. Acceptable for medium-risk areas but not recommended as sole protection for an expensive e-bike.

Folding locks suit riders who value the neat frame mounting and compact storage. For maximum security, pair a folding lock with a secondary lock (like a cable through the front wheel).

Chain Locks

Chain locks offer the most flexibility for locking your e-bike to various objects. They can wrap around thick posts, through both wheels and the frame, and accommodate awkward parking situations.

Advantages:

• Maximum flexibility in what you can lock to
• Can secure frame and both wheels in one chain
• High-end chains are extremely difficult to cut

Disadvantages:

• Heavy. Security-rated chains weigh 3kg to 6kg or more.
• Bulky and difficult to carry on the bike
• Cheaper chains can be cut with large bolt cutters

Recommended chain locks:

Kryptonite New York Chain 1210 — Sold Secure Gold. 12mm hardened manganese steel links with a disc-style cylinder lock. 4.99kg and 100cm length. Around $150 to $200 AUD. Extremely difficult to defeat without power tools.

Abus CityChain 1010/110 — Sold Secure Gold. 9mm square links, 110cm length. 2.2kg. Around $100 to $130 AUD. A lighter option that still provides strong security.

Hiplok Gold — Sold Secure Gold. 10mm hardened steel chain with a wearable belt design so you can carry it around your waist. 1.8kg, 85cm length. Around $90 to $120 AUD.

For e-bike commuters who park in the same location daily, keeping a heavy chain lock at the destination (at work, in a locker, or at the bike rack) avoids carrying the weight while riding.

Locking Strategy

The lock itself is only half the equation. How you use it matters just as much:

Lock to an immovable object. This seems obvious but people get it wrong. Ensure the object cannot be lifted over, unbolted, or cut more easily than the lock. Parking meter posts, thin signposts, and small trees are poor choices.

Lock through the frame first. If you can only use one lock, secure the frame to the object. Wheels can be replaced; frames cannot (easily). The rear triangle of the frame through the rear wheel is ideal with a U-lock.

Use two locks of different types. A thief equipped to defeat a U-lock may not have the tools for a chain, and vice versa. A U-lock through the rear wheel and frame, plus a cable or chain through the front wheel, provides excellent protection.

Minimise space inside the lock. A U-lock with lots of empty space inside gives leverage for prying or twisting attacks. Choose a size that fits tightly around what you are locking.

Lock in well-lit, busy areas. Thieves prefer quiet, hidden locations where they can work undisturbed. A lock in a busy, well-lit area buys you time.

Remove the battery. If your e-bike battery is removable, take it with you. A bike without its battery is worth significantly less to a thief. Many e-bike batteries also have a key lock to prevent removal; always lock it.

E-Bike Insurance

Even the best lock cannot guarantee your bike will not be stolen. Consider e-bike insurance as a complement to physical security.

Several Australian insurers offer specific bicycle and e-bike policies:

• Bikesure and BikeVault offer standalone bicycle insurance from around $15 to $40 AUD per month depending on the bike's value.
• Home and contents insurance may cover your e-bike, but check the policy details. Many have low limits for bicycles ($1,000 to $2,000) that do not cover the full value of an e-bike. Some require the bike to be locked with a rated lock to make a claim.
• Some e-bike retailers offer insurance packages at the time of purchase.

Check that any insurance policy covers theft away from home (not just from your property), and that the lock requirement matches the lock you actually use. Some policies specifically require Sold Secure Gold or equivalent rated locks.

GPS Trackers

As an additional layer, GPS trackers hidden inside the frame or battery compartment can help recover stolen e-bikes. Options available in Australia include:

• Apple AirTag: Cheap ($49 AUD) but relies on the Apple Find My network. Effective in urban areas. Easily hidden in the frame or under the seat.
• Tile Pro: Similar to AirTag but for the Tile network. About $50 AUD.
• Invoxia GPS Tracker: Dedicated GPS with cellular connectivity. Around $150 AUD plus subscription. More accurate tracking than Bluetooth-based options.
• Bosch and Shimano integrated systems on some premium e-bikes include GPS tracking and remote lock features.

A GPS tracker does not prevent theft, but it significantly improves the chances of recovery and can assist police in locating the bike.

Budget Guide

For a minimum-security setup on an e-bike worth $2,000 or more:

• Essential: One Sold Secure Gold U-lock ($80 to $150 AUD)
• Better: Gold U-lock plus a cable for the second wheel ($100 to $180 AUD total)
• Best: Gold U-lock plus a Gold chain lock ($200 to $350 AUD total)
• Add: GPS tracker ($50 to $150 AUD) and insurance ($15 to $40/month)

Spending $150 to $300 on locks to protect a $3,000 to $5,000 e-bike is a rational investment. The cost of replacing a stolen bike far exceeds the cost of proper security.