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Bike Chain Lock 3FT/4FT/5FT Heavy Duty Bike Lock Anti-Theft Bicycle Chain Lock 8mm/10mm Thicker Bicycle Lock Chain Bike Lock with 3 Keys for Bike, Motorcycle

  • Based on 813 reviews
Condition: New
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon

Arrives Thursday, Jul 17
Order within 15 hours and 12 minutes
Available payment plans shown during checkout

Color: 3.3FT-10mm-six-sided chain


Features

  • HIGH QUALITY HEAVY DUTY BIKE LOCK: The bike chain lock itself features 10mm/0.39inch six-sided links which are made of high carbon structural steel link which is heat treatment hardening, thus the links will not be too brittle. The thick links have high tenacity for strong cut resistance, and will provide your valuable things with extra protection against bolt cutters.
  • NO BLOCKING: The lock cylinder of this bike chain lock is made by zinc alloy blade, which has a precise structure to prevent technical opening. With the lock dust cover and cooper lock cylinder, no need to worry about blocking when opening the heavy duty bike lock.
  • HUMANISED DESIGN: This bike chain lock comes with 3 keys, so you'll always have a spare one. It will offer you some peace of mind in case you lose one. The bicycle chain lock comes with a flexible protective cloth sleeve which can protect the bike from scratch.
  • WIDE APPLICATION: This bicycle lock has a wide application which is ideal for bicycle, motorcycle, gates, fences and more. Just use it to freely protect your valuable objects as long as the length of this bike chain lock is suitable for the objects you protected.
  • MASSIVE BUT HIGHLY SECURE: The total length of this chain bike lock is 3.3 FT and the weight of which is 5.86 lbs. This lock is made of heavy-duty steel, sacrificing weight but providing adequate security. Please take the weight into account!

Description

8MM/0.32INCH HGIHG CARBON STRUCTURAL STEEL BIKE CHAIN LOCK BRINGS YOU MORE SAFETY The bicycle lock is made of high quality manganese steel which is heat treatment of high tenacity for strong cut resistance. The flexible protective cloth sleeve of this bike lock will keep your bike from scratching. The whole design of the chain bike lock can prevent it from picking, knocking and bumping. Thick Security Links! The bike chain lock itself features 8mm/0.32inch square links which are made of high carbon structural steel link which is heat treatment hardening, thus the links will not be too brittle. The thick links have high tenacity for strong cut resistance, and will provide your valuable things with extra protection against bolt cutters. 3 Keys for You! This heavy duty bike lock comes with 3 copper keys, so you'll always have a spare one. It will offer you some peace of mind in case you lose one. These 3 keys are specially designed which are difficult to copy and the good quality makes it very smooth to open the bicycle lock, you will never worry about blocking. Bring more safety for you! The lock cylinder of this bike lock chain is made by zinc alloy blade, it will make any thief think twice before trying to steal your bicycle, thus bring more safety to your bikes. Comes with a lock hole dust cover, the bicyle chain lock can resist corrosion from water, dust and dirt. The life of your bicycle u lock will be prolonged.

Brand: INTEKIN


Material: Alloy Steel


Recommended Uses For Product: bike lock


Color: 3.3FT-10mm-six-sided chain


Included Components: 3 copper keys, lock hole dust cover


Brand: ‎INTEKIN


Material: ‎Alloy Steel


Recommended Uses For Product: ‎bike lock


Color: ‎3.3FT-10mm-six-sided chain


Included Components: ‎3 copper keys, lock hole dust cover


Item Weight: ‎5.8 Pounds


Manufacturer: ‎INTEKIN


Item Package Dimensions L x W x H: ‎9.06 x 5.51 x 2.95 inches


Package Weight: ‎6 Pounds


Brand Name: ‎INTEKIN


Part Number: ‎INT321


Date First Available: November 26, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jul 17

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.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • GREAT LOCK.
Color: Black(3FT-8mm)
BUY IT!!!! Its gonna be better then you think. SOLID !! Nobody is gonna touch this. .Very Happy with purchase.
Reviewed in the United States on June 10, 2025 by Mike D.

  • Secure, but bulky and heavy
Color: Black(3FT-8mm)
I got this lock after having two consecutive combination locks cut from my bicycle. I neglected to write down the combinations I'd set, and after a long winter, I couldn't remember them! So, I decided to go with a key lock. This is a SOLID lock and chain, but it is heavy and bulky. So, I often have to take a few extra minutes after unlocking it so I can figure out how to wrap it around my seat peg. The block where you insert the key is so large that it will droop down and get in the way of my legs or hang down and bang against the frame if I don't wrap it tightly enough. The chain itself is so bulky that it makes wrapping it a challenge. I don't have any storage on my bike (and don't wear a backpack), so this is the only place I can store it. But for the price, it's a great lock. ... show more
Reviewed in the United States on March 29, 2025 by Bruce B.

  • Third time's the charm? I feel dared.
Color: Black(3FT-8mm)
Decent security but not total security. I've withstood at least two attempts to break this lock. First some kind of cutters to the lock's box, second a torch to the lock hole itself. I don't know what results the pyro was trying to achieve. Also, the key continues to work after the pyro's visit mangled as the plastic and cover are ... You can definitely get a lock more secure than this but this one has an excellent price to protection ratio. Pro Tip: Two different types of locks and two different securing points makes a harder target. ... show more
Reviewed in the United States on April 25, 2025 by Yaz Pogue Yaz Pogue

  • Secure bike
Color: Black(3FT-8mm)
This item arrived right on time as mentioned. Thanks to all people involved.
Reviewed in the United States on December 24, 2024 by Julio Patino

  • Excellent lock choice
Color: Black(5FT-8mm)
Exactly as described. Love the lock and it’s very sturdy
Reviewed in the United States on May 23, 2025 by Tracy Goralczyk

  • Well-made
Color: Black(3FT-8mm)
Just as description describes
Reviewed in the United States on April 29, 2025 by The propellers were fine, but it came with the wrong screws not that pleased

  • Great deal
Color: Black(3FT-8mm)
Fits great
Reviewed in the United States on April 22, 2025 by Angelicia Ellis

  • Great chain for my ebike!
Color: 3.3FT-10mm-six-sided chain
It's noticeably heavy but it's heavy duty and feels high quality! The length is just right.
Reviewed in the United States on April 8, 2025 by Brian Did It

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