Kryptonite Extra Length Key Chain 3.9 Feet Long for Bicycle Security
Kryptonite Extra Length Key Chain 3.9 Feet Long for Bicycle Security
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Kryptonite Extra Length Key Chain 3.9 Feet Long for Bicycle Security

251 ratings

Key item features

  • 8mm hardened steel chain links resist hand tools, bolt cutters, and leverage attacks
  • Nylon protective covering helps prevent scratching and wear and tear on your bike
  • Chain length: 3.9 feet
  • Lifetime warranty

Specs

Bicycle lock type, Chain Bicycle LocksLock type, Key LockMaterial, MetalWeight, 4.65 lbBrand, KryptoniteColor, Black

About this item

Product details

The Kryptonite Extra Length Chain Bike Lock features 8mm round chain links made of hardened steel with a protective nylon cover. This extra length key chain (3.9 feet) includes two stainless steel keys with an ergonomic design to reduce torque and keep them from bending or breaking.
  • 8mm hardened steel chain links resist hand tools, bolt cutters, and leverage attacks
  • Nylon protective covering helps prevent scratching and wear and tear on your bike
  • Chain length: 3.9 feet
  • Lifetime warranty
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

Specifications

Bicycle lock type

Chain Bicycle Locks

Lock type

Key Lock

Material

Metal

Weight

4.65 lb

Warnings

Customer ratings & reviews

4.7 out of 5 stars
stars
251 ratings63 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars88% (220)
  2. 4 stars5% (13)
  3. 3 stars4% (9)
  4. 2 stars0% (1)
  5. 1 star3% (8)

Reviews summary

Pros

  • : It provides slack to secure gear around thick posts and frames.
  • : Made with materials that can withstand wear and tear.
  • : The lock offers heavy-duty security at a reasonable cost.
  • : Features an intuitive design for effortless use.
  • : Includes two keys for convenience and backup.

Neutral

  • : Links are thick but the sheath may detach and expose them.
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Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
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Showing 1-3 of 63 reviews

Sep 6, 2026
Reviewer name: WILLIE
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

I rode my Ebike to Walmart and I had curbside pickup so I wouldn't have to go in store.I made it home and wow I'm impressed with the lock.it's thick and seems to be well built,I have an under the seat storage compartment but my only suggestion would be to get a waterproof carrying bag cloth or leather that'll attach to the frame to keep the lock out of the way till you need it.

Helpful?6XGK10K7U1DW17589662804
Aug 30, 2026
Reviewer name: Tiera
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Solid, Heavy-Duty Security

This Kryptonite chain lock is built like a tank. The extra length gives plenty of leeway to secure your gear to thick posts or through multiple frames, and the heavy-duty links feel extremely tough and reliable. The sleeve protects against scratches, and the key mechanism turns smoothly without sticking. Absolutely gives great peace of mind—5 stars!

Helpful?6XGK10K7U1DW17589662804
May 1, 2026
Reviewer name: mindy
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Impressive Lock!

I first purchased Kryptonite locks a decade ago. I originally purchased the locks for our bikes but my husband "borrowed" them during Covid to secure our travel travel from being stolen - the locks worked perfectly to secure the chains, the hitch, and our propane tanks. I recently purchased a new bike and purchased another Kryptonite to protect the bike. I trust the locks completely! My husband? Not so much. This time I will hide the keys .

Helpful?6XGK10K7U1DW17589662804
Current price is $27.96
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