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Kryptonite KryptoFlex 525 Double Loop 2.5 FT Braided Steel Security Cable

  • Based on 1,892 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, Oct 14
Order within 7 hours and 15 minutes
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Pattern Name: Bike Security Cable


Style: 2'6" (5mm)


Features

  • DURABLE DESIGN: This Anti-Theft double loop cable lock is made from 5mm BRAIDED STEEL CABLE for greater cut resistance. A protective vinyl coating helps prevent scrathing and wear and tear on your bike/equipment.
  • MULTI-FUNCTIONAL: This 2.5 ft long cable can be used with all Kryptonite U-Locks, disc locks and padlocks. When paired with a second Kryptonite lock, the 525 Double Looped Cable is ideal for securing multiple bicycles, motorcycles, or scooters. It is also ideal for securing outdoor equipment, patio furniture, or other heavy equipment.
  • SPECIFICATIONS: This double loop cable lock is 2.5 ft. (76 cm) long and 3/16 in. (5 mm) wide in diameter and weighs .15 lbs (.07 Kgs).
  • LIFETIME WARRANTY AND CUSTOMER SERVICE: Kryptonite is committed to providing our customers with high quality products, ensuring full satisfaction. If you are experiencing any problems with your product, please reach out to our Customer Experience team. We will work to solve your issue as quickly as possible. We provide our locks with a limited lifetime warranty so you can buy your lock with confidence.

Description

DURABLE DESIGN: This Anti-Theft double loop cable lock is made from 5mm BRAIDED STEEL CABLE for greater cut resistance. A protective vinyl coating helps prevent scrathing and wear and tear on your bike/equipment. MULTI- FUNCTIONAL: This 2.5 ft long cable can be used with all Kryptonite U-Locks, disc locks and padlocks. When paired with a second Kryptonite lock, the 525 Double Looped Cable is ideal for securing multiple bicycles, motorcycles, or scooters. It is also ideal for securing outdoor equipment, patio furniture, or other heavy equipment. SPECIFICATIONS: This double loop cable lock is 2.5 ft. (76 cm) long and 3/16 in. (5 mm) wide in diameter and weighs .15 lbs (.07 Kgs). LIFETIME WARRANTY AND CUSTOMER SERVICE: Kryptonite is committed to providing our customers with high quality products, ensuring full satisfaction. If you are experiencing any problems with your product, please reach out to our Customer Experience team. We will work to solve your issue as quickly as possible. We provide our locks with a limited lifetime warranty so you can buy your lock with confidence.

Brand: Kryptonite


Special Feature: Lightweight, Anti-Theft, Vinyl coating


Lock Type: Key Lock


Item dimensions L x W x H: 30 x 0.19 inches


Material: Alloy Steel, Vinyl


Brand Name: Kryptonite


Recommended Uses For Product: Security for, bikes, kayaks, Stand Up Padle Boards, Chairs, Outdoor Furniture.


Number of Pieces: 1


Included Components: One double loop cable


Model Number:


UPC: 720018210719


Model Name: KryptoFlex 525 Double Loop Cable


Global Trade Identification Number: 19


Manufacturer Warranty Description: Manufacturer Warranty


Number of Items: 1


Manufacturer: Kryptonite


Number of Packs: 1


Unit Count: 1 Count


Item Type Name: LOCK


Manufacturer Part Number: 210719


Additional Features: Lightweight, Anti-Theft, Vinyl coating


Lock Type: Key Lock


Controller Type: Hand Control


Control Method: Touch


Style Name: 3/16” (5mm) cable diameter 2.5’ (76cm) cable length


Color: Gray


Shape: Round


Material Type: Alloy Steel, Vinyl


Finish Types: Painted


Item Dimensions: 30 x 0.19 inches


Item Weight: 9.07 g


Item Highlight: 5mm Thick Anti-Theft Flex Bike Lock Cable with Protective Vinyl Coating, Compatible with U-Locks, Disc Locks and Padlocks


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Nice item, prevent theft!
Bought this to secure my Hi-Lift jack to my UTV to prevent theft. Fits through the holes on the jack perfectly. The coating should prevent marking up the paint.
Reviewed in the United States on December 1, 2025 by Ryan

  • Strong and flexible
I bought this cable to accompany a lock that I purchased. I have found it to be lightweight, easy to use, and a good value for the money. It appears durable, and I feel reasonably confident that it will be weather resistant. The size is as advertised, and the loops fit nicely in tight areas without being flimsy. ... show more
Reviewed in the United States on June 9, 2026 by Amazon Customer

  • Check given measurements before buying.
It’s really thin, so I returned it. Can’t see it doing the job of preventing theft of a bike. More like keeping a patio chair from being stolen.
Reviewed in the United States on June 25, 2026 by ReggieReader

  • Specialized Cable That's Great For Specific Uses.
I have a heavy U-lock (Abus Granit Plus 640) that secures my bike frame and the rear wheel to a bike rack. I also have a quick-release seat. I pull this KryptoFlex 525 cable through the one of the stays on the bottom of the seat, then run one loop through the other loop, and then run the through loop down to the U-lock. This cable also narrow enough to fit through my helmet, so I don't have to carry it around. A second short, but heavier, cable is used in the same way to secure the quick release front wheel to the U-lock. Someone who with a good pair of wire cutters who knew what they were doing could probably go through this KryptoFlex 525 in a few minutes, but to get a used helmet and seat? This deters crimes of opportunity, not a professional thief; realize what you're purchasing. The KryptoFlex 525 is small and light weight and also used with the second short cable to suspend the U-lock between the seat stays and the rear bike rack while I'm riding, too, eliminating the need to carry the U-lock with brackets on the down tube. In short, it's perfect for what I need. ... show more
Reviewed in the United States on March 20, 2018 by Mike In NYC

  • Perfect for locking things up
Perfect length strong holds my helmet and long enough to go through the sleeve of my jacket to lock both to the frame. Smooth coating prevents scratches wish I had bought this first.
Reviewed in the United States on March 24, 2026 by David Levesque

  • Great
Great
Reviewed in the United States on May 31, 2026 by Roy Daniels

  • OK for locking inexpensive expendable items. Easily defeated; not for real bicycle security.
I use this for my bicycle seat, or also an empty backpack. It can easily be clipped with a pair of bolt cutters in my opinion, so it's for supplemental security of small value items in my opinion. I don't use this to lock anything important. I use serious locks for my bike and wheels, and this isn't that. It is what it is. ... show more
Reviewed in the United States on March 13, 2026 by RC

  • It was the right size
I bought this security cable to replace the larger steel cable (that was coiled for use on a bicycle). I needed a steel cale to securely attach the battery to my wife's lightweight and foldable mobility scooter. It worked perfectly. It is small enough to fit through the battery handle, but heavy enough that it can withstand anything short of bolt cutters. This is a very well made product for a good price if you don't need a large cable. ... show more
Reviewed in the United States on September 13, 2023 by DON R

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