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Master Lock

Master Lock 6 ft Cable Bike Lock 4-Digit Combination 1/2 in Diameter 8122D

  • Based on 13,129 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Sep 30
Order within 15 hours and 8 minutes
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Size: 6' x 1/2"


Number of Items: 1


Features

  • VERSATILE BIKE LOCK: Master Lock 8122D outdoor bike cable lock with combination helps secure bicycles, e-bikes, scooters and other outdoor equipment; Ideal as a bicycle lock and basic theft deterrent for everyday security
  • RESETTABLE COMBINATION LOCK: Cable bike lock features a four-digit set-your-own combination for keyless convenience; Set and reset your own combination without carrying keys
  • BRAIDED STEEL CABLE: Bike lock cable is made with braided steel for strength and flexibility; Protective vinyl coating helps prevent scratches on bikes and outdoor gear
  • LONG SECURITY CABLE: Combination bike lock cable measures 6 ft. (1.8 m) long and 1/2 in. (13 mm) wide in diameter, offering extended reach for locking bikes to racks and fixed objects
  • INCLUDES ONE CABLE LOCK: Includes one black resettable combination bike lock cable; Portable anti-theft bike lock is designed for basic security and everyday outdoor use

Description

If you’re not on your bike, make sure we are. Thieves will take the path of least resistance. Many times all you need is a tough cable lock. Quantum braided steel cables are tough and protective. Cable locks can also be used to further enhance your U-Lock or Cuff security. Whatever your needs are, there’s a Quantum cable lock made for you. From the Manufacturer If you’re not on your bike, make sure we are. Thieves will take the path of least resistance. Many times all you need is a tough cable lock. Quantum braided steel cables are tough and protective. Cable locks can also be used to further enhance your U-Lock or Cuff security. Whatever your needs are, there’s a Quantum cable lock made for you.

Brand: Master Lock


Special Feature: Anti Theft, Heavy Duty, Resettable


Lock Type: Combination Lock


Item dimensions L x W x H: 70.86 x 0.5 x 0.5 inches


Material: Alloy Steel, Vinyl


Brand Name: Master Lock


Recommended Uses For Product: Bike


Number of Pieces: 1


Included Components: One adjustable cable lock, two keys


Model Number: 8122D


UPC: 071649049491 716490494914


Model Name: 8122D


Global Trade Identification Number: 91, 14


Manufacturer Warranty Description: Limited Lifetime Warranty


Number of Items: 1


Manufacturer: Master Lock


Number of Packs: 1


Unit Count: 1 Count


Item Type Name: Bike Cable Lock


Manufacturer Part Number: 8122D


Additional Features: Anti Theft, Heavy Duty, Resettable


Lock Type: Combination Lock


Controller Type: Hand Control


Style Name: Bike Lock


Color: Black


Shape: U Shape


Material Type: Alloy Steel, Vinyl


Finish Types: Painted


Item Dimensions: 70.86 x 0.5 x 0.5 inches


Item Weight: 1.6 pounds


Item Highlight: Set Your Own Combo Vinyl-Coated Braided Steel Lock Protects Bicycles, Scooters, Outdoor Equipment from Theft


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 30

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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Similar Products

Top Amazon Reviews

    • Great bike lock, have used confidently for 2 months
Size: 6' x 5/16" Number of Items: 1
Review Image by Katie Hagen
Great bike lock! The picture is exactly what is shipped when ordered. The coil is long and can easily lock up 2 adult bikes or 2 adult bike and 3 children's bikes. Cable is thick and would be difficult to cut. Combination code is easy to set and the numbers are easily turned to enter your code. The coiled cord makes it easy to store and transport when riding. Only one slight drawbacks: the coiled cord is thick and requires some effort to unwind to lock up bikes. Often I am the only adult riding with my kids and it's been incredibly easy for me to lock and unlock bikes. ... show more
Reviewed in the United States on August 19, 2026 by Katie Hagen
    • No regrets buying this product
Size: 6' x 1/2" Number of Items: 1
Great product, sturdy and the directions were easy to follownto set up my own combination.
Reviewed in the United States on August 10, 2026 by Rob Peterson
    • Great lock for bikes and scooters
Size: 5' x 1/2" Number of Items: 1
Great lock. Easy to set the new code. Great bang for your buck
Reviewed in the United States on August 21, 2026 by SDuff103
    • Mostly good?!
Size: 6' x 1/2" Number of Items: 1
Seems sturdy enough. The combination lock was easy to reset. There was one major flaw however, I bought this one because it came with a lock holder that attaches to the bike. The problem is now the lock feels permanently locked into the holder! I can't get it to release, even when pressing the release button. I have been using it to lock to poles and whatnot but it would be nice to properly lock the wheels. I just decided to keep it. I'd buy again but wouldn't use the holder, perhaps? ... show more
Reviewed in the United States on August 28, 2026 by Juicy14u
    • Great bike lock
Size: 5' x 1/2" Number of Items: 1
Easy to change the code, easy to use, and looks exactly like the pictures!
Reviewed in the United States on August 22, 2026 by Kelsey Morgan
    • Nice quality and value
Size: 6' x 1/2" Number of Items: 1
Works as described and nice to have the mount attachment included
Reviewed in the United States on August 31, 2026 by Ash
    • Can’t Be Easily Cut
Size: 6' x 1/2" Number of Items: 1
Unfortunately it’s a really good lock as it’s not easily cut. Would be very difficult to steal anything it locks up… However when it fails to open that’s not helpful! Bought this for my daughter to use while in Atlanta. Right away, we changed the code so she would be able to remember one she established. You attest the side dial and set the new code. We did that and tested the new code several times before locking up her bike. The next day I put the lock together and locked up her bike. She was able to unlock it herself and rode to a local Target. When she arrived, she called me and asked if I had difficulty putting the lock back together when I used it, I said no, although it was a bit “stiff”. I told her to push it together and that should be fine. She did eventually, locked the bike, and went into the store. When she came out, she could not open the lock. She tried several times and it would not unlock despite having unlocked for me, and for her. She asked for help, tried lubricating it (since it was stiff), and nothing would work. The lock would not open. She asked for help from Target employees and security. Even though they could not get it open. They tried cutting it with typical bolt cutters and it could not be cut. It took a locksmith to open it and they used specialized cutting tools. So while this is a great lock that is not easily cut, I am having a hard time giving it more than one star because she used it three times before it wouldn’t open. It’s being returned. ... show more
Reviewed in the United States on June 1, 2025 by Tammayrend
    • Really Impressed
Size: 6' x 1/2" Number of Items: 1
This is a Very nice lock. Heavy cable, Nice big numbers (hey I'm old ). Setting your own code is super easy. The included bike attachment is very nice and easy to use. I suspect it will break long before the lock does.
Reviewed in the United States on July 14, 2026 by Richard D. Miller

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