Kryptonite Kryptolok Combo Chain
Heavy-duty KryptoLok Combo Chain from Kryptonite features 9.5mm 3T manganese-steel links and a resettable 5-digit combination for keyless security. Available in 120cm (4') and 90cm (3') with $1,750 Anti-Theft Protection.
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Product Details
Secure, purpose-built construction
Locking & security technology
Sizing, fit and compatibility
Who the KryptoLok Combo is for
Key Features
- ✓ 4-sided 3T manganese-steel links for improved shear resistance
- ✓ 9.5mm chain link thickness balances security and portability
- ✓ Resettable 5-digit combo with over 100,000 unique codes
- ✓ Combo Safe Program with manufacturer Anti-Theft Protection
- ✓ Security rating 6/10 — strong urban deterrent
- ✓ Available lengths: 120cm (4') and 90cm (3') to suit needs
- ✓ Protective sleeve to prevent frame scratches during use
Specifications
Product Identifiers
Frequently Asked Questions
How do I set or reset the 5-digit combination?
The KryptoLok uses a resettable 5-digit mechanism that you can program to your personal code. Follow the included instructions: open the lock using the factory code, rotate the reset lever or position, set your new 5-digit code, then return the lever to its original position. Keep your chosen code safe and consider recording it in a secure place.
What does the Security Rating 6/10 mean?
Kryptonite’s 6/10 rating indicates solid protection for everyday urban use. It’s designed to resist casual thieves and deter opportunistic attacks, but for long unattended periods in very high-risk locations you should add a second, higher-rated lock for layered security.
Is a mounting bracket included with this chain?
No — the listed product does not include a mounting bracket. The chain ships without onboard mounting hardware, so you'll carry it in a bag, strap it to a rack, or buy an aftermarket bracket compatible with the chain’s dimensions.
What is the $1,750 Anti-Theft Protection and how do I claim it?
The $1,750 Anti-Theft Protection is part of Kryptonite’s owner benefits when you register your product under the Combo Safe Program. Coverage is subject to program terms, proof of purchase and registration — contact Kryptonite or check their website for specifics on eligibility and the claims process.
Which length should I choose — 90cm or 120cm?
Choose 120cm (4') if you often need to secure your bike and frame to larger objects like signposts or multiple bikes. Pick 90cm (3') if you prioritize lighter weight and a more compact carry for crowded racks or quick stops.
How heavy is the chain and is it practical for daily carry?
The 120cm KryptoLok ships at about 7.5 lb (shipping weight) and is a noticeable but practical weight for commuters who prioritize stronger security. If you need something lighter for long rides, consider the 90cm variant or a smaller lock — but expect a tradeoff in reach and some security.
Buying Guide
When choosing a chain lock consider link thickness, material, and length. Heavier chains with hardened steel links give better cut resistance but increase carry weight. For daily urban use a 9–10mm hardened chain is a good compromise between security and portability. Decide on length by how you lock — 120cm covers more anchor options and multiple bikes, while 90cm is lighter and easier to stow. If you frequently leave your bike in high-risk areas, pair the chain with a U-lock or look for a higher security rating. Always register the lock if Anti-Theft Protection is offered.
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