Motorbike locks and chains are essential components of bike security, offering protection against theft and vandalism. This guide highlights five top-rated products, comparing their construction, resistance, and user-friendliness. Whether you ride daily or keep a bike in storage, these solutions cover heavy-duty chain locks, integrated U-locks, and keyless options to suit different scenarios and environments.
| Product | Brand | Length / Thickness | |
|---|---|---|---|
| BIGLUFU Motorcycle Chain Locks, 100 cm | BIGLUFU Store | 120 cm x 2 in x 4 keys | 12 mm square chain, 3T manganese steel, water-resistant sleeve, 4 ergonomic keys, 14 mm U-lock option |
| Titanker Heavy Duty Bicycle Lock Chain, 3 ft | Titanker Store | 3 ft / ~0.18 in diameter chain links | 6 mm thick links, protective cloth sleeve, dust cover, easy locking without keys |
| Kryptonite Keeper 712 Bike Chain Lock | Kryptonite Store | 4 ft long | 7 mm hardened steel, four-sided links, patented locking system, rubber coating |
| Kryptonite Keeper 585 Bike Chain Lock | Kryptonite Store | 2.7 ft | 5 mm hardened chain, secure cylinder, protective sleeve |
| Sportneer Bike Lock: 5 Digit Combination | Sportneer Store | 3.2 / 3.6 / 4 ft, 4–6 mm | Keyless 5-digit combo, 6 mm manganese steel, dustproof cap |
Note: The products above are evaluated for cut resistance, corrosion protection, ease of use, and overall value. Always select a lock size appropriate for your parking conditions and local crime risk.
BIGLUFU Motorcycle Chain Locks Review

The BIGLUFU lock set combines a 12 mm square-linked chain with a heavy-duty U-lock and four ergonomic keys. The chain uses unbreakable 3T manganese steel and resists extreme pulling and shear forces, providing strong cut resistance compared with standard locks. A water-resistant nylon sleeve protects the chain from scratches and weather, while the 14 mm U-lock shackle adds another layer of defense. The kit includes four stainless steel keys designed to resist bending, and the locking mechanism employs anti-theft cylinder design. This combination is suitable for urban and rural environments where securing a motorcycle or other valuable assets is necessary.
Titanker Heavy Duty Bicycle Lock Chain Review

The Titanker chain lock emphasizes heavy-duty security with a 6 mm thick chain linking system housed in a protective cloth sleeve to reduce rust and scratches. A dust cover protects the keyhole from rain and dust, enhancing longevity. While it can be used without keys by snapping it shut, the product description notes that no bike lock is 100% secure, encouraging best practices such as not leaving a bike unattended in high-crime areas for extended periods. This lock is well-suited for quick foot traffic or shorter-term parking needs where portability matters.
Kryptonite Keeper 712 Bike Chain Lock Review

The Kryptonite Keeper 712 features a 7 mm hardened steel chain with four-sided links for strong resistance to cutting and leverage. The patented locking system reduces weak points where attempts to break in could succeed. A durable rubber coating protects the bike’s finish, and a weather-resistant nylon sleeve minimizes wear from the elements and scratches. This model balances security with ease of use, making it suitable for longer-term outdoor storage and frequent parking scenarios.
Kryptonite Keeper 585 Bike Chain Lock Review

The Keeper 585 uses a 5 mm hardened chain with a secure pin and wafer-style cylinder to reduce picking and drilling risks. A protective rubber coating and a heavy-duty nylon sleeve protect both chain and bike, respectively, from wear and scratches. While lighter than some other options, this model provides reliable security for shorter to mid-range investments and is easy to carry in a backpack or pannier for urban commuters.
Sportneer 5 Digit Combination Bike Lock Review

The Sportneer lock uses a keyless 5-digit combination for convenient access, removing the need to carry keys. It is constructed from 6 mm manganese steel, offering strong cut resistance, while the lock core is made from zinc alloy to resist sawing and leverage attempts. A dustproof cap and a flexible fabric cover help maintain weather resistance and prevent rust or scratches on the bike’s surface. This option is ideal for riders who prioritize quick, keyless access in everyday use.
Buying Guide: Key Purchase Considerations
- Lock type and compatibility: Decide between a chain-only, U-lock combined with chain, or a long single-chain lock, based on parking conditions and bike value.
- Material and cut resistance: Look for hardened steel, chain thickness, and link design. Thicker chains with four-sided links generally offer higher security.
- Protection against weather and scratches: Protective sleeves, rubber coatings, and weather-resistant casings extend lock life and prevent paint damage.
- Security features: Consider patented locking systems, anti-pick cylinders, and end-link designs to eliminate weak points.
- Ease of use: Keyed vs. keyless designs, number of keys, and ease of locking/unlocking can impact daily usability.
- Size and portability: Ensure the lock length fits the spaces you park in and can be carried conveniently when traveling.
- Maintenance: Regular lubrication of the lock mechanism and cleaning the chain helps maintain performance and longevity.
- Value vs. risk: In high-crime areas, prioritize multi-layered security setups (chain plus U-lock) rather than a single lock.