Best Bike Lock

2026

Kryptonite Keeper 785 Bike Chain Lock

Lightweight security, heavyweight protection

68/100 $47.95

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Why this one

The Kryptonite Keeper 785 combines expert-praised ease of use with impressive versatility at an accessible price point. Its lightweight design and strong security make it ideal for low to medium-risk areas, delivering solid anti-theft protection without the bulk of heavier alternatives.

Pros

✓ Excellent anti-theft security with heavy-duty construction
✓ Good value for price compared to premium bike locks
✓ Versatile 2.8-foot length works for bikes, motorcycles, gates, and doors
✓ <cite index="12-16,12-17,12-21,12-22">Quick and easy to use that fits almost everywhere; fairly tough to cut and impervious to bolt cutters, cable cutters, and hacksaws</cite>
✓ <cite index="11-19,11-20">Amongst the lightest chain locks at just 3.1 pounds</cite>

Cons

✗ Keys can become difficult to turn or break with age
✗ Surface rust can develop despite protective coating in wet climates
✗ <cite index="11-15,11-18">7mm links can be cut much faster than heavier chains; slightly less secure than a standard U-lock</cite>
✗ <cite index="31-16">Requires 14 seconds with an angle grinder to cut through</cite>