--- product_id: 197806 title: "Kryptonite LK41051 KryptoLok Series 2 Standard Heavy Duty Bicycle U Lock with 4ft Flex Bike Cable" brand: "kryptonite" price: "133019CFA" currency: XOF in_stock: true reviews_count: 13 category: "Kryptonite" url: https://www.desertcart.sn/products/197806-kryptonite-lk41051-kryptolok-series-2-standard-heavy-duty-bicycle-u store_origin: SN region: Senegal --- # 13mm hardened steel shackle 4ft Kryptoflex double loop cable Anti-drill & disc-style cylinder Kryptonite LK41051 KryptoLok Series 2 Standard Heavy Duty Bicycle U Lock with 4ft Flex Bike Cable **Brand:** kryptonite **Price:** 133019CFA **Availability:** βœ… In Stock ## Summary > πŸ” Lock in your ride’s safety β€” because your bike deserves Kryptonite-level protection! ## Quick Answers - **What is this?** Kryptonite LK41051 KryptoLok Series 2 Standard Heavy Duty Bicycle U Lock with 4ft Flex Bike Cable by kryptonite - **How much does it cost?** 133019CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/197806-kryptonite-lk41051-kryptolok-series-2-standard-heavy-duty-bicycle-u) ## Best For - kryptonite enthusiasts ## Why This Product - Trusted kryptonite brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Silent Security:** Anti-rattle bumpers minimize noise during transport for discreet protection - β€’ **Dual-Lock Defense:** Includes 4ft Kryptoflex double loop cable to secure wheels & accessories effortlessly - β€’ **Weatherproof Warrior:** Rotating dustcover shields cylinder from elements, ensuring long-lasting reliability - β€’ **Carry with Confidence:** New Transit FlexFrame-U system offers versatile, ergonomic bike mounting on the go - β€’ **Unbreakable Steel Fortress:** 13mm MAX-PERFORMANCE hardened steel shackle resists cutting & leverage attacks ## Overview The Kryptonite LK41051 KryptoLok Series 2 is a premium heavy-duty U-lock featuring a 13mm hardened steel shackle and a 4-foot Kryptoflex double loop cable for comprehensive bike security. Its reinforced crossbar design, anti-drill disc-style cylinder, and anti-rattle bumpers deliver robust protection and quiet transport. The lock includes a rotating dustcover and a versatile Transit FlexFrame-U mounting system, combining durability with convenience for the discerning urban cyclist. ## Description Replaced with new and improved design in 2017 - check out our New U lock, it will send any bike thief running!. 13mm hardened MAX-PERFORMANCE STEEL SHACKLE resists cutting and leverage attacks. Includes 4’ KRYPTOFLEXβ„’ DOUBLE LOOP CABLE for securing front wheel or accessories. Reinforced HARDENED CROSS BAR DESIGN provides increased protection. HIGH SECURITY DISC-STYLE CYLINDER. Center keyway defends against leverage attacks. ANTI-RATTLE BUMPERS reduce noise during transport. Rotating dustcover protects cylinder. Includes NEW TRANSIT FLEXFRAME-U transportation system which allows for versatile carrying.Protective vinyl coating.2 STAINLESS STEEL KEYS. Key Safe Program. Review: Amazing bike lock! - I had minor reservation about spending so much money on a bike lock, but I am glad I did. This lock holds up to the name Kryptonite, because it's made to stop Superman! Not really, I'm sure he could destroy this, but anyone short of superman has no chance. The U lock is VERY thick and sturdy. It has an adjustable mount which allows for easy attachment to the mounting bracket. The lock itself uses a unique key, and has a cover to help protect against rain and other elements. The flex cable as well is much thicker than some other cables I've had in the past. It comes with a velcro strap for easy storage. The bike mounting bracket itself, while it works, is a bit odd. It uses a mesh strap, which does allow for easily mounting to many different shapes and sizes, however it only relies on a rubber piece to prevent sliding. I haven't had any issue, but I do worry that this could be a problem in the future. The mount, while a bit more complicated than it could be, does allow for a fair bit of versatility, which is nice. This lock actually comes with a warranty that I found to be pretty great, however, there are some things to know ahead of time in regards to it. It covers up to $500 of a motorized vehicle, or $1500 on a bicycle, and will cover either A) Your insurance deductible, or B) value, based on which is cheaper. You have to register the product within 15 days of purchase, and the registration costs $10. As well this warranty only lasts 1 year, and only covers thefts due to product failure, IE the lock being cut etc. Part of the reason for my purchase of this lock, was due to the warranty, I just wish I knew ahead of time that it costs $10 extra and is only good for 1 year. I am still very satisfied with the lock, however, and felt that I've gotten what I paid for, as opposed to buying some cheaper cable for $5 or so. Review: Useful lock combo - Great lock. I like the combination of the u-lock and cable to be able to lock both wheels, or a saddle or helmet as well. Lock looks sturdy but obviously has not been tested by thieves yet ;-) Easy to attach the bike holder to the bike with the wrap. Great product, especially for the price point. I review often and carefully choose the star rating in an unbiased manner. Star ratings are earned, never given. 1 Star: Stay away! The product is either of extremely low quality, was poorly or even deceivingly described, or parts of the product details or description do not match up with reality. I suggest not to buy the product as your money can be better used elsewhere. 2 Star: Well under expectations. The product is not completely worthless, but does not live up to the expectation a normal user would have given its price and description. Again, I would suggest you can find better value for your hard earned cash. 3 Star: Neutral. Largely met the product description and details but I would not order the product again. Some particular features, its design or looks, or the price may make this somewhat attractive, but overall I would still not recommend this to my friends. 4 Star: Nice product. All my expectations were consistently met. Good quality, and you get what you are looking for given the description. It's a thumbs up without the enthusiastic smile. Good product, but not stellar in any way. 5 Star: Outstanding product. All my expectations given the product description were met and in part exceeded. Unreserved recommendation for a well-made product. This would be the kind of product I would recommend to friends putting my reputation as a honest and well-meaning recommender on the line. ## Features - Replaced with new and improved design in 2017 - check out our New U lock, it will send any bike thief running! - 13mm hardened MAX-PERFORMANCE STEEL SHACKLE resists cutting and leverage attacks - Includes 4’ KRYPTOFLEX DOUBLE LOOP CABLE for securing front wheel or accessories - Reinforced HARDENED CROSS BAR DESIGN provides increased protection - HIGH SECURITY DISC-STYLE CYLINDER - Center keyway defends against leverage attacks - ANTI-RATTLE BUMPERS reduce noise during transport - Rotating dustcover protects cylinder - Includes NEW TRANSIT FLEXFRAME-U transportation system which allows for versatile carrying - Protective vinyl coating ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005YPK8G2 | | Additional Features | Anti-Drill | | Best Sellers Rank | #6,830 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #7 in Bike U-Locks | | Brand | Kryptonite | | Brand Name | Kryptonite | | Color | Black | | Control Method | App | | Controller Type | Hand Control | | Customer Reviews | 4.4 out of 5 stars 6,191 Reviews | | Finish Types | Vinyl | | Global Trade Identification Number | 00720018001072, 00720018999416 | | Included Components | Kryptonite Kryptolok Series 2 Standard Bicycle U-Lock With Transit Flexframe Bracket (4-Inch X 9-Inch) With 4-Foot Flex Cable, Transit Flexframe Bracket | | Item Dimensions | 9.02 x 4.02 x 1.18 inches | | Item Weight | 1.5 pounds | | Item dimensions L x W x H | 9.02 x 4.02 x 1.18 inches | | Lock Type | U-lock | | Manufacturer | Kryptonite | | Manufacturer Part Number | 001072 | | Material | hardened Performance steel shackle | | Material Type | hardened Performance steel shackle | | Model Name | Kryptolok Serie 2 Ls + Flex | | Model Number | LK41051 | | Number of Pieces | 2 | | Recommended Uses For Product | Security | | Shape | U Shape | | Special Feature | Anti-Drill | | Style Name | Original | | UPC | 720018001072 | ## Product Details - **Brand:** Kryptonite - **Special Feature:** Anti-Drill - **Lock Type:** U-lock - **Item dimensions L x W x H:** 9.02 x 4.02 x 1.18 inches - **Material:** hardened Performance steel shackle ## Images ![Kryptonite LK41051 KryptoLok Series 2 Standard Heavy Duty Bicycle U Lock with 4ft Flex Bike Cable - Image 1](https://m.media-amazon.com/images/I/519j2XSEy1L.jpg) ![Kryptonite LK41051 KryptoLok Series 2 Standard Heavy Duty Bicycle U Lock with 4ft Flex Bike Cable - Image 2](https://m.media-amazon.com/images/I/914w+uYyixL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Amazing bike lock! *by C***R on April 23, 2013* I had minor reservation about spending so much money on a bike lock, but I am glad I did. This lock holds up to the name Kryptonite, because it's made to stop Superman! Not really, I'm sure he could destroy this, but anyone short of superman has no chance. The U lock is VERY thick and sturdy. It has an adjustable mount which allows for easy attachment to the mounting bracket. The lock itself uses a unique key, and has a cover to help protect against rain and other elements. The flex cable as well is much thicker than some other cables I've had in the past. It comes with a velcro strap for easy storage. The bike mounting bracket itself, while it works, is a bit odd. It uses a mesh strap, which does allow for easily mounting to many different shapes and sizes, however it only relies on a rubber piece to prevent sliding. I haven't had any issue, but I do worry that this could be a problem in the future. The mount, while a bit more complicated than it could be, does allow for a fair bit of versatility, which is nice. This lock actually comes with a warranty that I found to be pretty great, however, there are some things to know ahead of time in regards to it. It covers up to $500 of a motorized vehicle, or $1500 on a bicycle, and will cover either A) Your insurance deductible, or B) value, based on which is cheaper. You have to register the product within 15 days of purchase, and the registration costs $10. As well this warranty only lasts 1 year, and only covers thefts due to product failure, IE the lock being cut etc. Part of the reason for my purchase of this lock, was due to the warranty, I just wish I knew ahead of time that it costs $10 extra and is only good for 1 year. I am still very satisfied with the lock, however, and felt that I've gotten what I paid for, as opposed to buying some cheaper cable for $5 or so. ### ⭐⭐⭐⭐⭐ Useful lock combo *by M***N on October 3, 2016* Great lock. I like the combination of the u-lock and cable to be able to lock both wheels, or a saddle or helmet as well. Lock looks sturdy but obviously has not been tested by thieves yet ;-) Easy to attach the bike holder to the bike with the wrap. Great product, especially for the price point. I review often and carefully choose the star rating in an unbiased manner. Star ratings are earned, never given. 1 Star: Stay away! The product is either of extremely low quality, was poorly or even deceivingly described, or parts of the product details or description do not match up with reality. I suggest not to buy the product as your money can be better used elsewhere. 2 Star: Well under expectations. The product is not completely worthless, but does not live up to the expectation a normal user would have given its price and description. Again, I would suggest you can find better value for your hard earned cash. 3 Star: Neutral. Largely met the product description and details but I would not order the product again. Some particular features, its design or looks, or the price may make this somewhat attractive, but overall I would still not recommend this to my friends. 4 Star: Nice product. All my expectations were consistently met. Good quality, and you get what you are looking for given the description. It's a thumbs up without the enthusiastic smile. Good product, but not stellar in any way. 5 Star: Outstanding product. All my expectations given the product description were met and in part exceeded. Unreserved recommendation for a well-made product. This would be the kind of product I would recommend to friends putting my reputation as a honest and well-meaning recommender on the line. ### ⭐⭐⭐⭐ Lock is great, cable is a bit too short! *by N***N on August 25, 2013* I purchased this lock for use at a university to keep my mountain bike safe. I find the lock to be perfect as it being longer than most U-locks helps me out a lot because my mountain bike has an XL frame which common U-locks don't fit. The only issue I had was the cable which was too short to run through my wheels which have quick releases. After receiving this, I had to use my older cable lock as a secondary lock to keep my wheels safe. The mount is a great add on as it makes it much easier to carry! I had a few issues with the keys, but I will explain later the solution to preventing issues... Pros: -solid lock; seems really hard to cut, and deters thiefs from even attempting to steal your bike -mount makes life easier when biking without a backpack -easy to open and close if you operate keys properly Cons: -the little metal mount on the "U" part of the lock loosens over time(not a big issue, you just have to push it sometimes so the lock locks) -key is pretty fragile and can break easily -cable is too short The Key: -make sure you push it ALL THE WAY IN before turning -rotate a FULL 180 DEGREES to unlock or lock -if the key does not come out, DO NOT pull or it could snap, just wiggle it or rotate it the 180 degrees again till it comes out with ease(DO NOT FORCE) -Make sure to push the metal mount piece on the "U" part of the lock all the way up as it takes up space that the lock needs to lock as it WILL NOT CLOSE unless the metal piece is flush Besides these few minor issues and the cable being too short, I'd recommend this lock to everyone looking for a solid lock to protect their bikes! Extremely easy to use and they even guarantee that your bike will be safe! Hope this helps! ## Frequently Bought Together - Kryptonite KryptoLok Series 2 Standard Heavy Duty Bicycle U Lock with 4ft Flex Bike Cable - Ascher Ultra Bright USB Rechargeable Bike Light Set, Powerful Bicycle Front Headlight and Back Taillight, 4 Light Modes, Easy to Install for Men Women Kids Road Mountain Cycling Black - Kryptonite Keeper 785 Bike Chain Lock, 2.8 Feet Long Heavy Duty Anti-Theft Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/197806-kryptonite-lk41051-kryptolok-series-2-standard-heavy-duty-bicycle-u](https://www.desertcart.sn/products/197806-kryptonite-lk41051-kryptolok-series-2-standard-heavy-duty-bicycle-u) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-07-30*