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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 861 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Oct 30
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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


Lock Type: Pin Tumbler


Recommended Uses For Product: bike lock


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


Item Weight: 5.8 Pounds


Brand: ‎INTEKIN


Lock Type: ‎Pin Tumbler


Recommended Uses For Product: ‎bike lock


Color: ‎3.3FT-10mm-six-sided chain


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, Oct 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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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)
Solid, easy to use and strong.
Reviewed in the United States on September 26, 2025 by Eduardo Figueroa

  • 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.

  • 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.

  • Seems pretty heavy duty overall.
Color: Black(4FT-8mm)
Seems pretty heavy duty overall. Purchased the 4' and happy with it so far. Quality seems decent. Delivered on time. Would recommend
Reviewed in the United States on August 14, 2025 by Bob hagar

  • Work great
Color: Orange(4FT-8mm)
Works perfectly and is heavy
Reviewed in the United States on July 20, 2025 by Andrew

  • 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

  • Thick
Color: 3.3FT-10mm-six-sided chain
I got the thick boy and it's thick
Reviewed in the United States on September 26, 2025 by Leonidas

  • Calidad precio
Color: Black(5FT-8mm)
Cumple muy bien con su función hasta el momento
Reviewed in the United States on September 17, 2025 by Santiago Merchan

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