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Sold by: Planet Cyclery
Sold by: Planet Cyclery
(21823 ratings)
91% positive over last 12 months
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Kryptonite Keeper 712 Combo Bike Chain Lock, 4 Feet Long 7mm Steel Chain Heavy Duty Anti-Theft Bicycle Chain Lock, 4-Digit Resettable Combination Lock for E-Bike Scooter Road Mountain Bikes

4.5 4.5 out of 5 stars 568 ratings

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Purchase options and add-ons

Brand Kryptonite
Special Feature Anti-theft
Lock Type Combination Lock
Item Dimensions LxWxH 15 x 4 x 6 inches
Material Steel

About this item

  • END LINK LOCKING POINT for extensive holding power
  • 4-sided 3t manganese steel chain links
  • 4 DIGIT RESETTABLE COMBINATION over 10,000 codes

Frequently bought together

$51.04
Get it Apr 3 - 8
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Ships from and sold by 365 Cycles.
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$24.00
Ships from and sold by Amazon.com.
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From the manufacturer

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  • Rated 5/10 on Kryptonite's security scale
  • Moderate Security lock
  • Eligible for the optional Anti-theft Protection

Keeper 712 Combo Chain

Moderate Security

  • 7mm four-sided chain links made from Kryptonite’s high performing 3T manganese steel.
  • End link design secures directly to hardened deadbolt.
  • 4 digit resettable combination 10,000 possible codes.
  • Hardened steel lockhead.
  • Weather-resistant nylon sleeve prevents scratches to painted finishes; compact coiling for easy carrying.
  • Positive dial rotation with indexing design.
  • Length: 47.2" (120cm)
  • Weight: 4.5 lbs (2.04 kg's)

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Chain Size

7mm four sided chain links made of 3T manganese steel.

Anti-theft Protection

Register your product online to activate the optional Anti-theft Protection. In the unlikely event the product is defeated when used properly Kryptonite will pay out up to a certain value depending on the security value of the product. Visit our official website for further information. T&C’s apply.

Combo Safe Program

Register your combination online and Kryptonite will be able to remind you what it is should you forget.

Resettable Combination

4 digit resettable combination with 10,000 possible codes.

Product Description

The 712 Integrated Chain features an end-link locking point for extensive holding power and 7mm four-sided chain links made from 3T manganese steel. Rated at a 5 / 10 on our security scale, it is good for quick stops in a metropolitan area, a few hours in the suburbs or overnight in rural areas. The hardened deadbolt design provides extra holding power and the disc-style cylinder is both pick and drill resistant. The lock comes with two new ergonomic "I" keys and a weather-resistant nylon sleeve to prevent scratches. The lock is 120 cm long and weighs 3.75 lbs.

Product information

Technical Details

Additional Information

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Kryptonite

Kryptonite Keeper 712 Combo Bike Chain Lock, 4 Feet Long 7mm Steel Chain Heavy Duty Anti-Theft Bicycle Chain Lock, 4-Digit Resettable Combination Lock for E-Bike Scooter Road Mountain Bikes


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Customer reviews

4.5 out of 5 stars
4.5 out of 5
568 global ratings

Customers say

Customers like the quality, ease of use, value, and size of the bike lock. For example, they mention it's heavy duty, secure enough for urban locking, and worth the price. Some appreciate the length, saying it'll fit two bikes. That said, opinions are mixed on portability.

AI-generated from the text of customer reviews

51 customers mention40 positive11 negative

Customers like the ease of use of the lock. They mention it's easy to lock and unlock, it'll stay secure enough for urban locking, and has a substantial chain and lock mechanism. Some say that the lock is great as a secondary lock and has never failed them.

"Great lock works great" Read more

"...The combo is very easy to set and the locking mechanism appears very sturdy. Much better than a cable lock. So good, I’ve bought three of these." Read more

"...might not be as secure but i think that this chain is secure enough for urban locking (not overnight) but when doing errands etc...." Read more

"Great bike lock, easy to use. Nice to have the protective cover. A little heavy but still user friendly. Combo setup is good. Really like the length...." Read more

36 customers mention30 positive6 negative

Customers like the quality of the lock. They say it's heavy duty, substantial, and the chain is very strong. Customers also say it looks beefy and appears to be impenetrable unless you have cutting tools. They also like that the lock is easy to use and offers moderate protection for low to medium theft.

"I wanted a chain that was very secure, long, and with a combo. This one met every requirement...." Read more

"...A little heavy but still user friendly. Combo setup is good. Really like the length. Makes securing your bike around big objects easier" Read more

"Very good quality, just hope it stops the thieves from taking my e-bike" Read more

"Good buy for it’s quality" Read more

12 customers mention9 positive3 negative

Customers like the size of the lock. They say that it's long enough to lock two bikes and is huge.

"I wanted a chain that was very secure, long, and with a combo. This one met every requirement...." Read more

"...length is good for most situations but you would need a secondary cable if you also want to secure a second wheel..." Read more

"...A little heavy but still user friendly. Combo setup is good. Really like the length. Makes securing your bike around big objects easier" Read more

"Just the right length to lock 2 bikes. It's heavy as you would expect it to be and should keep your bike secure." Read more

7 customers mention7 positive0 negative

Customers appreciate the value of the lock. They say it's worth the price, a good investment, and a hefty lock.

"Good lock and chain. Hefty." Read more

"It's is worth the price, especially if you own an expensive bike." Read more

"...After doing research I came across this one for a reasonable price." Read more

"Exactly what I needed at a great price and fast delivery.." Read more

6 customers mention6 positive0 negative

Customers are satisfied with the protection provided by the lock. They mention that the cover protects the bike frame, generator, and chain.

"...I also appreciate it’s not too bulky and the cover protects the bike frame...." Read more

"Great bike lock, easy to use. Nice to have the protective cover. A little heavy but still user friendly. Combo setup is good. Really like the length...." Read more

"...The chain protection helps not to damage or scratch the bike." Read more

"Solid, formidable protection, reasonably portable. Combo, don't need to worry about losing my key." Read more

29 customers mention13 positive16 negative

Customers are mixed about the portability of the lock. Some mention that it's heavy, but it'll protect their bike. Others say that it adds weight to the bike and is too bulky for a bike.

"Very heavy chain" Read more

"...This one met every requirement. I also appreciate it’s not too bulky and the cover protects the bike frame...." Read more

"Great bike lock, easy to use. Nice to have the protective cover. A little heavy but still user friendly. Combo setup is good. Really like the length...." Read more

"Just the right length to lock 2 bikes. It's heavy as you would expect it to be and should keep your bike secure." Read more

7 customers mention0 positive7 negative

Customers are dissatisfied with the appearance of the lock. They mention that it has a defective conception, very poor quality control, and a fatal design flaw. Some say that the end cap snaps off and the lock fell apart after a winter of sitting.

"...Very poor quality control. I ordered a replacement...." Read more

"...Unlocked after winter of sitting and fell apart." Read more

"...There is a defect. The end cap snaps off. Bad design. Don’t buy." Read more

"The locking mechanism for Kryptonite locks are very janky..." Read more

The best value for money
5 Stars
The best value for money
The Bling Bling my bike needed
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Matteo Targhini
5.0 out of 5 stars Prodotto di qualità
Reviewed in Italy on February 25, 2024
Robert Douglas
5.0 out of 5 stars Sturdy and Easy to use
Reviewed in the United Kingdom on July 4, 2022
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Reviewed in Mexico on August 27, 2020
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5.0 out of 5 stars Big old heavy chain
Reviewed in Canada on July 13, 2020
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Reviewed in Germany on April 21, 2020
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