Kryptonite Keeper 785 Bike Chain Lock, 2.8 Feet Long Heavy Duty Anti-Theft Bicycle Chain Lock with Keys for Bike, Motorcycle…
Kryptonite · 4 more picks →
Best for
Best budget chain
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 3 trusted sources
Current price
$37.94
Updated Jun 27, 2026 · 1 min read
Sources behind this verdict
11 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
The Kryptonite Keeper 785 is the value chain pick across the reviewers we read. OutdoorGearLab found it occupies a solid middle ground, with excellent versatility at a nice price, while being clear that it offers not exceptional security and is somewhat bulky. Its 7mm chain and the Kryptonite name draw a huge verified-purchase following, more than 11,000 reviews at 4.7 stars, the largest base among the locks here.
What reviewers liked
- OutdoorGearLab praises versatility and price
- Largest verified-purchase base here (11,334 reviews, 4.7)
- Chain length loops easily around multiple objects (r/ebikes)
- Trusted Kryptonite mechanism at a budget price
Where it falls short
- OutdoorGearLab explicitly calls security 'not exceptional'
- Only 7mm chain, weak for high-theft areas per r/bicycling
- Somewhat bulky and heavier than its security tier suggests
- No match for power tools
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The Kryptonite Keeper 785 is the value chain pick across the reviewers we read. OutdoorGearLab found it occupies a solid middle ground, with excellent versatility at a nice price, while being clear that it offers not exceptional security and is somewhat bulky. Its 7mm chain and the Kryptonite name draw a huge verified-purchase following, more than 11,000 reviews at 4.7 stars, the largest base among the locks here.
Community feedback is location-dependent. r/bicycling commenters say that in some places the 785 is plenty, while in high-theft areas even the strongest lock won't be enough. r/ebikes owners like the length for looping around two objects but note it can be thicker than what they're attaching to. Several Reddit threads mention choosing it after watching destructive-testing channels and deciding it fit their risk level.
The synthesis: a versatile, affordable chain that's right for low-to-moderate theft environments and cheaper bikes, but reviewers steer high-value-bike owners in high-risk cities toward the Gold-rated options above.
- Heavy-Duty Chain
- Made from 7mm manganese steel with four-sided links, this bike lock provides maximum resistance against cutting and leverage attacks
- Patented Locking System
- Features a high-security disc-style cylinder, resistant to picking and drilling, and a patented end link design that securely connects the chain to a hardened deadbolt, eliminating weak points
- Protective Features
- Durable rubber coating around helps prevent scratching and wear and tear on your bike. Durable WEATHER-RESISTANT nylon sleeve prevents scratches
- Durable Design
- Keeper 785 Integrated Chain extends up to 85cm (33.5 in) in circumference, crafted from 7mm hardened steel links. Heavy-duty bike lock weighs 1.59kg (3.50 lbs). Includes two keys and rated 5/10 for moderate security on our scale.
- Atpo & Keysafe Program Eligible
- Register to qualify for Kryptonite's Anti-Theft Protection Offer and KeySafe key replacement service
- Lifetime Warranty And Support
- Kryptonite offers a limited lifetime warranty for peace of mind. If you experience any issues, contact our Customer Experience team, and we will resolve it quickly. We are committed to your satisfaction and product quality
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Kryptonite evolution chain lock is probably a much more secure option, albeit heavier. But if you keep that off the ground, few thiefs will bother with the ...
It depends where you live. In some places the 785 is plenty strong. In other places the strongest lock made still won't be enough.
Trust tier reflects our editorial assessment of the source, not the individual quote. Hover for the rationale. See how we tier sources →
“Kryptonite Heavy Duty Anti-Theft Bike Chain Lock” · Review
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