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Master Lock

Master Lock 6 ft Cable Bike Lock 4-Digit Combination 1/2 in Diameter 8122D | Set Your Own Combination Bike Lock, Vinyl-coated Braided Steel Protects Bicycles, Scooters & Outdoor Equipment From Theft

  • Based on 12,950 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Aug 6 – Aug 7
Order within 7 hours and 24 minutes
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Size: 6' x 1/2"


Number of Items: 1


Features

  • Outdoor bike cable lock with combination is best used as a bicycle lock and to secure other outdoor equipment
  • Cable bike lock features a set your own combination, four-digit combination lock; provides a basic security level that is best used as a theft deterrent
  • Bike lock is made with braided steel for flexibility, and includes a protective vinyl coating that helps prevent scratching
  • Bike lock cable is 6 ft. (1.8 m) long and 1/2 in. (13 mm) wide in diameter
  • Includes one black resettable combination bike lock cable; Set and reset your own combination

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: 8 x 5.8 x 1.1 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


Manufacturer: Master Lock


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: 8 x 5.8 x 1.1 inches


Item Weight: 1.6 pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Aug 6 – Aug 7

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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  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great bike lock
Size: 5' x 1/2" Number of Items: 1
Review Image by Ivan Bunker
Great lock, a Master Lock product. Easy setting your own combo number. Comes with a mount that I attached to my seat post facing back. Cable clips into mount, pressing a button releases the lock, then lift out of mount, very secure while riding.
Reviewed in the United States on June 19, 2026 by Ivan Bunker
    • 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
    • Safety First
Size: 5' x 1/2" Number of Items: 1
Simple easy to use kept our stroller safe in water park. The length allowed us to secure to multiple locations. Heavy duty easy to use lock and unlock!
Reviewed in the United States on July 8, 2026 by Miranda
    • Finicky at first, okay now
Size: 6' x 5/16" Number of Items: 1
Was finicky out of the gate. I know the combo. It's just not always wheels lined up, seems dead, frozen shut. Eventually opens. If arrives to you seemingly too finicky maybe don't keep it. It's functionality may be degraded like mine appeared. I was paranoid every time I had to use the lock that it would never come off again. Eventually I tried resetting the combination, and that helped. You don't have a lot of choices for quality, so I'm not saying don't buy this, I'm just saying temper your expectations as Master Lock may not have the resources to adequately supervise the QA on these cheap locks. ... show more
Reviewed in the United States on May 5, 2024 by Eventhorizon
    • Great bike lock!
Size: 5' x 1/2" Number of Items: 1
Very easy to use. Works perfectly.
Reviewed in the United States on June 21, 2026 by James D'Angelo
    • Great bike lock!
Size: 6' x 1/2" Number of Items: 1
Review Image by Marsha Young
Great bike lock! My brother and sister-in-law have the same lock and recommended it to me. It’s very rugged and well-made, and I like the combination feature. I feel safe in the fact that it’s so well-made and have no fear of someone trying to cut through this and stealing my bike! And for the price, it’s outstanding! ... show more
Reviewed in the United States on February 3, 2026 by Marsha Young
    • Definitely worth the price, reasonable and worth it.
Size: 6' x 5/16" Number of Items: 1
liking this lock. Set my own combo and it's hard to cut. Worth the price and it's name brand.
Reviewed in the United States on July 30, 2026 by Monica Copestakes
    • 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

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