10 Best Bike U Locks 2024 in the US

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Hardened Steel Shackle: 13mm Max Performance Steel Shackle designed to resist hand tools, bolt cutters, and leverage attacks.

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Additional Security Cable: Comes with a 10mm steel looped cable for extra security measures.

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Interior Locking Dimensions: Offers a locking space of 3.25 inches by 7 inches.

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Cable Length: Includes a 4-foot long security cable to secure the front wheel or accessories.

5.

Key Safe Program: Provides the first 2 replacement keys for free, available globally.

1.

Hardened Steel Shackle: 16mm Max Performance Steel Shackle designed to resist hand tools, bolt cutters, and leverage attacks.

2.

Interior Locking Dimensions: Offers a 4in x 8in locking space to secure your bike effectively.

3.

Key Safe Program: First 2 replacement keys are provided for free, available globally.

4.

Anti-Theft Protection: Includes an offer for up to $4,000 reimbursement for 1 year in case of theft.

5.

Flexframe-U Bracket: Comes with a secure mounting bracket for easy transportation of the lock.

1.

High-Security Design: 18mm hardened steel shackle resists cutting and leverage attacks.

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Patented Locking System: Double deadbolt design resists twist attacks and picking.

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Multi-Functional Use: Secures bikes, sports equipment, gates, and more.

4.

Key Safe Program: Free global shipping for first 2 lost keys with registration.

5.

Optional Anti-Theft Protection: Eligible for up to $5,000 coverage with registration.

1.

Hardened Steel Shackle: 12.7mm shackle made of performance steel to resist hand tools, bolt cutters, and leverage attacks.

2.

Steel Looped Cable: 10mm thick and 4ft long for additional security to lock wheels or accessories.

3.

Interior Locking Dimensions: Provides a locking space of 4 inches by 9 inches.

4.

Key Safe Program: Offers 2 free global key replacements in case of loss.

5.

Anti-Theft Protection: Provides up to $1,750 reimbursement in the event of a theft.

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Heavy Duty Shackle: 0.86 inch shackle resists heat and hydraulic shear.

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Anti-theft Cylinder: C grade pure copper cylinder resists leverage attacks.

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User-friendly Installation: Includes 4ft steel cable and mounting bracket.

4.

Portable Design: Lightweight U lock size 11.42 × 6.3 inches.

5.

Comprehensive Set: Includes lock, keys, cable, and mounting bracket.

1.

Hardened Steel Shackle: Resists hand tools, bolt cutters, and leverage attacks.

2.

Interior Locking Dimensions: 4" x 8" for versatile locking options.

3.

Key Safe Program: Free global shipping for first 2 lost keys.

4.

Anti-Theft Protection: Up to $500 reimbursement for theft.

5.

Lifetime Warranty: Ensures long-term protection and reliability.

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Scratch-Free Protection: External silicone layer prevents bike scratches.

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Concealed Screws: Integrated screws enhance aesthetics and security.

3.

High Shear Resistance: 0.74-inch shackle resists 12-ton hydraulic shear.

4.

Durable Lock Core: German lock cores ensure smooth and secure usage.

5.

Easy Installation: Mounting bracket and non-slip pad for secure fit.

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13 mm square parabolic shackle: Provides enhanced security and strength.

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Double bolting shackle: Ensures secure locking within the lock body.

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2 keys supplied: Comes with two keys for convenience.

4.

Security Level 15: Offers high-level security protection.

5.

Automatic keyhole cover: Protects against dirt and corrosion.

1.

Keyless 4-Digit Combination: Convenient and secure 4-digit resettable combination eliminates the need for keys and prevents lockouts due to lost keys.

2.

Hardened Steel Shackle: 14.6mm hardened steel shackle provides robust protection against cutting and leverage attacks.

3.

Versatile 5ft Steel Cable: Additional 5ft steel cable allows for securing bike components or accessories, offering an extra layer of security.

4.

Large Locking Space: Spacious interior locking dimensions (7.5" x 4.5") accommodate locking more items or larger bikes.

5.

Sturdy & Durable Construction: Made of hardened high-performance alloy steel with a zinc alloy lock head, offering excellent anti-theft performance and durability.