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Kryptonite Keeper Bike U-Lock, Anti-Theft Security Bicycle U Lock, 12mm Steel Shackle with Mounting Bracket and Keys, High Security Lock for Bicycles Scooters,Black

4.5 4.5 out of 5 stars 491 ratings
$47.74
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Style: Long Shackle
Pattern Name: lock
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Purchase options and add-ons

Brand Kryptonite
Special Feature Weather Resistant
Lock Type Key Lock
Item dimensions L x W x H 11.87 x 6 x 4 inches
Material Steel

About this item

  • HIGH-SECURITY DESIGN: Made from a 12mm hardened steel shackle, this bike lock provides excellent resistance against cutting and leverage attacks
  • MULTI-FUNCTIONAL: This Kryptonite bike lock is ideal to secure your bicycles, sports equipment, gates and fences, tool boxes & ladders, grills & lawnmowers, skateboards, truck bed and more
  • SPECIFICATIONS: U-Lock interior locking dimensions are 4 in. x 10 in, 12mm steel shackle with a weight of 2.25 lbs. Includes two stainless steel keys with an ergonomic design
  • PROTECTIVE FEATURES: Durable vinyl coating around the shackle helps prevent scratching and wear and tear on your bike. The high-security disc-style cylinder keyway is pick and drill resistant
  • EASY TRANSPORT with BRACKET: Includes a versatile bracket for quick and secure mounting to your bike frame, ensuring convenient transport without the need for a bag or backpack.

Competitively priced item

Amazon's Choice
4.6 out of 5 stars (3019)
$11.56

Frequently bought together

Kryptonite Keeper Bike U-Lock, Anti-Theft Security Bicycle U Lock, 12mm Steel Shackle with Mounting Bracket and Keys, High Se
This item: Kryptonite Keeper Bike U-Lock, Anti-Theft Security Bicycle U Lock, 12mm Steel Shackle with Mounting Bracket and Keys, High Security Lock for Bicycles Scooters,Black
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Kryptonite Keeper 785 Bike Chain Lock, 2.8 Feet Long Heavy Duty Anti-Theft Bicycle Chain Lock with Keys for Bike, Motorcycle,
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From the manufacturer


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

Keeper 12 Long Shackle U-Lock

Moderate Security

  • 12mm hardened performance steel shackle.
  • Hardened Double Deadbolt design with Anti-Rotation to resist against twist attacks.
  • Includes 2 Stainless Steel Keys with ergonomic design to reduce the amount of torque and keep them from bending or breaking.
  • Includes Side Mount Snap-in Bracket.
  • Disc Style Cylinder with center keyway.
  • Dimensions: 4" x 10" (10.2cm x 25.4cm) - Weight: 2.25 lbs (0.91 kg's)

.

Shackle Size

12mm hardened performance steel shackle with new hardened double-deadbolts to engage both ends increasing holding power.

Anti-theft Protection

Register your product online to activate the optional Anti-theft Protection Offer. 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.

Key Safe Program

Register your keys online and Kryptonite will ship your first 2 keys for free, globally, in the event you lose them.

.

Stainless Steel Keys

Includes 2 stainless steel keys with ergonomic design to reduce torque.

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Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Kryptonite Keeper Bike U-Lock, Anti-Theft Security Bicycle U Lock, 12mm Steel Shackle with Mounting Bracket and Keys, High Security Lock for Bicycles Scooters,Black

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Product Description

The Kryptonite Keeper 12 Long Shackle U-Lock features a 12 mm hardened steel shackle with a double deadbolt anti-rotation design that resists bolt cutters and twisting leverage attacks. The lock’s disc-style cylinder with center keyway is protected by a vinyl coating and is pick and drill resistant. It includes two stainless steel keys with an ergonomic design to reduce torque and keep them from bending or breaking. Rated at a 5 / 10 on our security scale, the Keeper 12 Long Shackle is good for quick stops in a metropolitan area, a couple hours in the suburbs or all day & overnight in rural areas. It also includes our patented Side Mount, Snap-In Bracket providing convenient U-Lock transport. The combination of these great features and our support programs including Key Safe, Anti-Theft Protection, and Lifetime Warranty make Kryptonite Bicycle Locks the best choice for protecting what you value.

Top Brand: Kryptonite

Highly Rated
100K+ customers rate items from this brand highly
Trending
10K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

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Kryptonite Keeper Bike U-Lock, Anti-Theft Security Bicycle U Lock, 12mm Steel Shackle with Mounting Bracket and Keys, High Security Lock for Bicycles Scooters,Black
Kryptonite Keeper Bike U-Lock, Anti-Theft Security Bicycle U Lock, 12mm Steel Shackle with Mounting Bracket and Keys, High Security Lock for Bicycles Scooters,Black
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Price$47.74$68.26$27.99$27.99$35.99$47.92
Delivery
Get it as soon as Friday, Mar 28
Get it as soon as Friday, Mar 28
Get it as soon as Friday, Mar 28
Get it as soon as Friday, Mar 28
Get it as soon as Friday, Mar 28
Get it as soon as Friday, Mar 28
Customer Ratings
4.54.5 out of 5 stars491
4.54.5 out of 5 stars232
4.44.4 out of 5 stars102
4.74.7 out of 5 stars161
4.54.5 out of 5 stars2,820
4.64.6 out of 5 stars669
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Customer reviews

4.5 out of 5 stars
491 global ratings

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Not a tight grip
4 out of 5 stars
Not a tight grip
Looks cool, weighs a bit more than a kilo, but lock doesn't hold itself very tight - shaky and noisy. Had to apply some tape to remove gaps and noise from shaking. Almost 50 bucks for a lock and still have to fix it with a scotch tape, c'mon people!
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Top reviews from the United States

  • Jonathan Faulkner
    5.0 out of 5 stars Lock up your ride or die.
    Reviewed in the United States on October 16, 2024
    Style: Long ShacklePattern Name: lockVerified Purchase
    One of the better U-Locks on the market. You can even use it on your 20x4 or 20x3 fat tires to lock it directly to the bike rack.
    Helpful
     Report
  • David
    5.0 out of 5 stars Great lock but the plastic holder was not for me.
    Reviewed in the United States on June 7, 2020
    Style: Long ShacklePattern Name: lockVerified Purchase
    The plastic coupling to fit to bike frame didn't necessarily fit my bike all that well but there were other placement options. I also find the bike harder to lock with the plastic piece still fitted to it as it tends to slide towards the locking mechanism and providing the fit it needs to close the lock properly. that said there is nothing wrong with this long. I got the longest model. I recommend that. It gives you extra wiggle room with tricky parking situations. Also great options for insurance and key replacement with kryptonite
    Helpful
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  • Jim
    5.0 out of 5 stars Heavy
    Reviewed in the United States on July 18, 2022
    Style: Long ShacklePattern Name: lockVerified Purchase
    This lock works great but it's a heavy lock and if I didn't own a ebike I wouldn't give it 5 stars. Easy to store on the bike with the bracket provided.
    2 people found this helpful
    Helpful
     Report
  • Bon Bon
    4.0 out of 5 stars Long
    Reviewed in the United States on October 26, 2024
    Style: Long ShacklePattern Name: lockVerified Purchase
    Long u lock. Pretty thin. Not sure how easy it is to cut through. Hoping it’s not. Key lock gets stuck sometimes. But I do like how long it is
    Helpful
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  • JJ: the particular consumer
    5.0 out of 5 stars Secure east to use on street
    Reviewed in the United States on October 4, 2023
    Style: Long ShacklePattern Name: lockVerified Purchase
    Fits beautifully in places that need a bit more length such as when I lock together my font wheel to my frame to my helmet to a sign post. It can be done because this is long enough.

    And I’m comfortable using this to secure my Nishiki on the streets of Los Angeles which is infamous for aggressive bike thieves. A bike of mine was stolen in broad daylight locked by a cable lock to a street sign. Clipped! This lock by kryptonite will not be clipped. And thieves have great difficulty breaking or prying it apart.
    One person found this helpful
    Helpful
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  • C Meyer
    5.0 out of 5 stars Awesome lock
    Reviewed in the United States on March 30, 2024
    Style: Long ShacklePattern Name: lockVerified Purchase
    Now I don't use it to lock up a bike I used it to lock my ladder on my work truck and it works flawless
    Helpful
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  • Jack Franks
    3.0 out of 5 stars **Update** Stopped working 2 weeks past return deadline..
    Reviewed in the United States on May 17, 2024
    Style: Long ShacklePattern Name: lockVerified Purchase
    **Update: I should have seen this coming..Lock stopped working 2 weeks past return deadline..First thing I noticed upon receiving it was how very flimsy(prob a knockoff) it felt and that the key was something you'd find in a child's toy. Additionally, the key slot was really flimsy and it wasn't long before I started having issues with it not opening/locking on first few attempts..but it always finally did. Should have returned it the first time it started happening as it slowly got worse and worse until today when the lock mechanism failed completely.

    Anyway, this is significant as the last thing anyone wants is to not be able to open their U lock when your bike/scooter is locked to a stand or sign post..big time bummer.

    For now on, with these kind of locks, if the key looks sketchy, I'm sending it back...
    **********************************************************************************************************************

    The size is fine and I really like the way it connects to my Scooter..audible snap and push button release..very cool. The only issue I've experienced is that the key slot seems a bit ragged for a product coming from this vanguard brand..so a few times after inserting key it didn't open but I think that was due to the U part pulling on the bar that key slot is part of causing pressure on it. After calming down(yeah, not being able to open your lock is stressful..lol) I made sure to push the U firmly into the base bar and it opened fine....
    2 people found this helpful
    Helpful
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  • Amazon Customer
    5.0 out of 5 stars Satisfied
    Reviewed in the United States on April 4, 2023
    Style: Long ShacklePattern Name: lockVerified Purchase
    Looks great seems very strong
    Helpful
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Top reviews from other countries

Translate all reviews to English
  • Eros La Spina
    5.0 out of 5 stars Lucchetto ad U: sicurezza e robustezza in primo piano!
    Reviewed in Italy on June 20, 2023
    Style: Long ShacklePattern Name: lockVerified Purchase
    Ottimo lucchetto ad U per bici!

    Ho acquistato questo lucchetto per una bici elettrica di un discreto valore, non volendo ricorrere a soluzioni più economiche e allo stesso tempo meno sicure.
    Robusto, di buona fattura che trasmette fin da subito qualità.

    Sicuramente lasciare la bici con un lucchetto simile offre la tranquillità di parcheggiarla come maggiore serenità.
    Forse un po' pesante ed ingombrante, infatti ho preferito non montare il supporto, bensì riporlo dentro alle borse.

    PRO ✅ : robusto, solido, di qualità
    CONTRO ❌ : un po' pesante ed ingombrante
    Report
  • Chris R.
    4.0 out of 5 stars Sicheres Fahrradschloss mit etwas hakeligem Schloss und schlechter Beschreibung
    Reviewed in Germany on October 29, 2020
    Style: Long ShacklePattern Name: lockVerified Purchase
    Ich habe das Schloss gekauft, da es einige Vorzüge mit sich brachte. Es sieht wertig aus, ist wetterbeständig und hat eine lange aber stabile U-Form.

    Schlossmechanismus: wie bei einigen Rezensionen zu sehen ist das Schloss etwas widerständig. Das liegt daran, dass man den Riegel gegen den Bügel drücken muss, damit das Schloss sicher und ohne gewackel zuschließen kann. Dennoch erstmal ein kleines Zeitärgernis, denn man muss erstmal einige Minuten probieren, um sich daran zu gewöhnen.

    Unabgerundete Form: der Hersteller beschreibt, dass das Schloss beim Verschluss keine runde Form zum Schließen benutzt hat. Das Ziel ist es, eine weitere Schwachstelle eines Bügelschlosses damit auszuhebeln.
    Der Bügel ist tatsächlich an den Ecken etwas eingekerbt. Wer aber einmal versehentlich nur einen von den Bügelnasen angeschlossen hatte, weiß, dass die Einkerbung nicht ausreicht, um ein Drehen (wenn auch nur ein kleines) zu verhindern. Daher leider ein weiterer Sternabzug für die leicht irreführende Marketing-Bezeichnung.

    Abgesehen davon ist das Schloss wohl eines der besseren in der Preisklasse. Dementsprechend kann man es durchaus empfehlen.
    Report
  • Red5
    5.0 out of 5 stars Good make, good lock.
    Reviewed in the United Kingdom on July 25, 2020
    Style: Long ShacklePattern Name: lockVerified Purchase
    Feel secure, the longer sides let me secure multiple bikes together with multiple cables and ulocks easier.
    The Krypto name is a good deterrent in itself so I use two of these with two cables and a couple of padlocks to secure 4 bikes together.
    Yes the locks and the cables are worth more than some of our bikes now but that’s the game.

    I also use this longer one to secure my tow bar bike carrier to the chassis instead of the manufacturer’s plastic looking lock.

    Pretty straight forward to use, both prongs for straight in to lock either way around so no twisting after one is cut, silver standard lock which means something to someone I guess, I want all the locks to be thief proof.

    The key for this is in the middle underneath and so uses a shorter key than normal.

    Happy so far, used in bad weather and hot weather and the lock still works fine.
    Report
  • adonis
    5.0 out of 5 stars Sturdy
    Reviewed in Australia on August 23, 2024
    Style: Long ShacklePattern Name: lockVerified Purchase
    Its sturdy, tough.
    Report
  • Martine s.
    5.0 out of 5 stars Looks good
    Reviewed in the United Kingdom on September 13, 2021
    Style: Long ShacklePattern Name: lockVerified Purchase
    It looks good and strong and the lock works well for the moment. Large enough to lock a wheel with the frame to a bike rack. It gives peace of mind.
    Report