--- product_id: 2373625 title: "Kryptonite Stronghold Anchor, Permanent Indoor Outdoor Bike Locking Point, Heavy Duty Anti-Theft Ground Anchor for Bicycles E-Bikes Scooters, 6.10 lb Steel Security Mount" brand: "kryptonite" price: "€ 246.20" currency: EUR in_stock: true reviews_count: 13 category: "Kryptonite" url: https://www.desertcart.hr/products/2373625-kryptonite-stronghold-anchor-permanent-indoor-outdoor-bike-locking-point-heavy store_origin: HR region: Croatia --- # 16mm hardened carbon alloy steel shackle 5/8” cement anchor bolts for permanent secure mounting Includes 2 masonry bits for precise installation Kryptonite Stronghold Anchor, Permanent Indoor Outdoor Bike Locking Point, Heavy Duty Anti-Theft Ground Anchor for Bicycles E-Bikes Scooters, 6.10 lb Steel Security Mount **Brand:** kryptonite **Price:** € 246.20 **Availability:** βœ… In Stock ## Summary > πŸ” Lock it down like a pro β€” your ride’s fortress awaits! ## Quick Answers - **What is this?** Kryptonite Stronghold Anchor, Permanent Indoor Outdoor Bike Locking Point, Heavy Duty Anti-Theft Ground Anchor for Bicycles E-Bikes Scooters, 6.10 lb Steel Security Mount by kryptonite - **How much does it cost?** € 246.20 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/2373625-kryptonite-stronghold-anchor-permanent-indoor-outdoor-bike-locking-point-heavy) ## 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€’ **Unbreakable Security:** 16mm hardened carbon alloy steel shackle resists cutting and tampering. - β€’ **Permanent Ground Anchor:** 5/8” cement anchor bolts secure directly into concrete for unmatched stability. - β€’ **Sleek Low-Profile Design:** Steel shackle lays flat within domed body, safe to walk or drive over without damage. - β€’ **Precision Installation Kit:** Comes with two masonry bits ensuring perfect pilot and final holes every time. - β€’ **Versatile Indoor & Outdoor Use:** Mount on concrete floors, walls, or truck bedsβ€”ideal for residential and commercial security. ## Overview The Kryptonite Stronghold Anchor is a heavy-duty, permanent bike and vehicle locking point designed for both indoor and outdoor use. Featuring a 16mm hardened carbon alloy steel shackle and 5/8” cement anchor bolts, it mounts securely into concrete surfaces. Included masonry bits ensure precise installation, while its low-profile design allows safe foot and vehicle traffic over the anchor. Trusted by professionals and enthusiasts alike, it offers unmatched anti-theft protection for bicycles, e-bikes, and scooters. ## Description PERMANENT LOCKING POINT for use indoors or outdoors to keep vehicles and bicycles safe. Attach to solid concrete ground/walls, or to truck/trailer beds. 16mm hardened CARBON ALLOY STEEL SHACKLE. 5/8” cement anchor bolts installed directly into the cement. Includes 2 MASONRY BITS (1- initial pilot hole, 1-final moly-bolt diameter). Steel shackle lays flat within domed body when not in use, making it safe to walk or drive over. Recommended for both residential and commercial applications. Product dimensions: 7.5” (19cm) anchor diameter, 1.65” (4.2cm) anchor height. Review: Solid Product - Positives: Very solid product. Quality build. This will not be the weakest link in my security. I used an old electric drill with hammer action and the bits help up perfectly. My concrete was poured 3 years ago with no visible cracks. Negatives: Takes some elbow to install. SUGGESTIONS: 1 Consider your location carefully 2 Allow plenty of time for install. It took me an hour to install. I could do it a second time in probably 20 minutes. 3 Following the directions exacty as indicated ... with possibly one exception .... You will drill three holes total into the concrete. The directions state to use the big bit for the first hole and then use the smaller bit first for a pilot hole and for accruacy before using the larger bit for the other two holes. I would suggest using the smaller bit and drilling a pilot hole for your first hole too. This will help drill the hole perpendicular to the floor and will reduce spalding or busting out some of the concrete if you try to drill the first hole with the larger bit only. 4 Do not attempt to drill all three pilot holes at once. Follow the directions. Drill one hole and fit one anchor. Then do the second and then the third. Do them one at a time. This will asure accurate placement of the achors. 5 Drill each hole perpendicular to the floor taking the time to check as you go. This will prevent trying to round out the hole if you get started wrong. A good straight hole will help the sleeve to fit in nice and tight for added security. 6 Use a shop vac as you drill to remove the dust. Drill a little, stop, use the vac and then drill some more checking that your drilling perpendicular to the floor as you go. The three achors will then fit nicely in your holes. This is not rocket surgery as my friend says. You are drilling three holes and installing three anchors. My installation went very well. Allow yourself some time, follow the directions and your install will go very well. Review: Solid and Secure ground anchor - I was quite overwhelmed upon receiving this product. My first impressions: it was big, heavy and felt like it was over engineered. There is nothing flimsy at all with the entire construction, even the plastic cap was thick, so thick that a heavy vehicle can easily drive over it without being damaged. I did have some doubts on how the installation will proceed after reading some of the negative reviews here. So I decided to read and understand the instruction manual. We set the mounting plate on the concrete pavement and drilled a hole with the pilot drill on the first marked hole on the plate. Once the drill was an inch into the material, we removed the plate and drilled to the length of the anchors. We vacuumed all the dust out then proceeded to drill with the final moly. We then carefully vacuumed all of the dust out the pushed the anchors into the hole, placed the mounting plate and screwed the bolt tight. Note that if the hole is carefully cleaned of all the drilling material, you don’t have to hammer the anchors, you can simply work them in using your fingers. We then proceeded to drill into hole #2 of the mounting plate with the pilot drill and repeated the procedure above, and the same went for hole #3. After all the anchors were placed we tightened the bolts and the plate gripped the concrete securely. There was no play or wiggle at all that can be perceived. The supplied bolt head seals/caps were hammered in place that made the installation permanent. Finally the plastic cover was screwed in place and what you see is the product successfully installed. Many folks advised using a hammer drill. We used a regular corded Dewalt drill and took our time drilling and vacuuming the dust and it worked very well. The job was surprisingly easy and straightforward. Best of all we now something to secure our bicycles and am confident that it will perform as designed. Final impressions: excellent product, easy to follow instructions and all materials needed were supplied for a successful installation. ## Features - PERMANENT LOCKING POINT for use indoors or outdoors to keep vehicles and bicycles safe - Attach to solid concrete ground/walls, or to truck/trailer beds - 16mm hardened CARBON ALLOY STEEL SHACKLE - 5/8” cement anchor bolts installed directly into the cement - Includes 2 MASONRY BITS (1- initial pilot hole, 1-final moly-bolt diameter) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000LF903M | | Additional Features | 16mm hardened Carbon Alloy Steel Shackle | | Best Sellers Rank | #128,252 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #80 in Bike U-Locks | | Brand | Kryptonite | | Brand Name | Kryptonite | | Color | Black | | Control Method | App | | Controller Type | Hand Control | | Customer Reviews | 4.5 out of 5 stars 803 Reviews | | Finish Types | Concrete | | Global Trade Identification Number | 00720018330202 | | Included Components | [Masonry bits for installation] | | Item Dimensions | 16 x 10.8 x 3.5 inches | | Item Type Name | LOCK | | Item Weight | 2.7 Kilograms | | Item dimensions L x W x H | 16 x 10.8 x 3.5 inches | | Lock Type | Ground Anchor | | Manufacturer | Kryptonite | | Manufacturer Part Number | 57-9776 | | Manufacturer Warranty Description | Manufacturer Warranty | | Material | Carbon Steel | | Material Type | Carbon Steel | | Model Name | Kryptonite Stronghold Anchor | | Model Number | 720018330202 | | Number of Pieces | 1 | | Recommended Uses For Product | Securing bicycles and vehicles | | Shape | Rund | | Smart Home Compatibility | Not Smart Home Compatible | | Special Feature | 16mm hardened Carbon Alloy Steel Shackle | | Style Name | Ground Anchor | | UPC | 720018330202 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Kryptonite - **Item dimensions L x W x H:** 16 x 10.8 x 3.5 inches - **Lock Type:** Ground Anchor - **Material:** Carbon Steel - **Special Feature:** 16mm hardened Carbon Alloy Steel Shackle ## Images ![Kryptonite Stronghold Anchor, Permanent Indoor Outdoor Bike Locking Point, Heavy Duty Anti-Theft Ground Anchor for Bicycles E-Bikes Scooters, 6.10 lb Steel Security Mount - Image 1](https://m.media-amazon.com/images/I/61BJEtAbmML.jpg) ![Kryptonite Stronghold Anchor, Permanent Indoor Outdoor Bike Locking Point, Heavy Duty Anti-Theft Ground Anchor for Bicycles E-Bikes Scooters, 6.10 lb Steel Security Mount - Image 2](https://m.media-amazon.com/images/I/61Qslq8nQZL.jpg) ![Kryptonite Stronghold Anchor, Permanent Indoor Outdoor Bike Locking Point, Heavy Duty Anti-Theft Ground Anchor for Bicycles E-Bikes Scooters, 6.10 lb Steel Security Mount - Image 3](https://m.media-amazon.com/images/I/61QhHM-iYNL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: what's to stop a thief from just unbolting it?** A: Nothing is ever completely theft-proof. If a thief really wants something, they will get it. However, anything you can do to make this as noisy and time-consuming as possible helps deter would-be thieves from even bothering because there are likely much easier targets in your area. To get to the bolts, they'd have to contend with removing the cover, removing the hammered-on caps and ball bearings under those, and then unbolting the screws. It would take them a lot of effort and a really long time, and they'd likely make a lot of noise doing it. Unless you've got something really valuable and you don't have any neighbors, I don't see any thieves bothering with this stuff. This is about as safe as you can get your bike chain anchors. **Q: How difficult is it to remove in order to change location? (example, moving to a new place)** A: I think if you pound the metal bolt covers in to place after installation via directions that removal might be challenging. I have not moved mine after it was installed, this is merely speculation. **Q: how much damage is caused from installing this device?** A: I embedded it into freshly laid concrete with the provided bolts. I didn't have to drill the holes, but it hasn't caused any damage the way I installed it. Hope that helped, sorry! **Q: Is the ring one continuous piece of metal, or is it sort-of a C shape, with the ends of the C being hidden in the base?** A: It is definitely ring-like, but I think the base part was welded to the C part. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Solid Product *by C***G on August 23, 2013* Positives: Very solid product. Quality build. This will not be the weakest link in my security. I used an old electric drill with hammer action and the bits help up perfectly. My concrete was poured 3 years ago with no visible cracks. Negatives: Takes some elbow to install. SUGGESTIONS: 1 Consider your location carefully 2 Allow plenty of time for install. It took me an hour to install. I could do it a second time in probably 20 minutes. 3 Following the directions exacty as indicated ... with possibly one exception .... You will drill three holes total into the concrete. The directions state to use the big bit for the first hole and then use the smaller bit first for a pilot hole and for accruacy before using the larger bit for the other two holes. I would suggest using the smaller bit and drilling a pilot hole for your first hole too. This will help drill the hole perpendicular to the floor and will reduce spalding or busting out some of the concrete if you try to drill the first hole with the larger bit only. 4 Do not attempt to drill all three pilot holes at once. Follow the directions. Drill one hole and fit one anchor. Then do the second and then the third. Do them one at a time. This will asure accurate placement of the achors. 5 Drill each hole perpendicular to the floor taking the time to check as you go. This will prevent trying to round out the hole if you get started wrong. A good straight hole will help the sleeve to fit in nice and tight for added security. 6 Use a shop vac as you drill to remove the dust. Drill a little, stop, use the vac and then drill some more checking that your drilling perpendicular to the floor as you go. The three achors will then fit nicely in your holes. This is not rocket surgery as my friend says. You are drilling three holes and installing three anchors. My installation went very well. Allow yourself some time, follow the directions and your install will go very well. ### ⭐⭐⭐⭐⭐ Solid and Secure ground anchor *by J***L on December 8, 2019* I was quite overwhelmed upon receiving this product. My first impressions: it was big, heavy and felt like it was over engineered. There is nothing flimsy at all with the entire construction, even the plastic cap was thick, so thick that a heavy vehicle can easily drive over it without being damaged. I did have some doubts on how the installation will proceed after reading some of the negative reviews here. So I decided to read and understand the instruction manual. We set the mounting plate on the concrete pavement and drilled a hole with the pilot drill on the first marked hole on the plate. Once the drill was an inch into the material, we removed the plate and drilled to the length of the anchors. We vacuumed all the dust out then proceeded to drill with the final moly. We then carefully vacuumed all of the dust out the pushed the anchors into the hole, placed the mounting plate and screwed the bolt tight. Note that if the hole is carefully cleaned of all the drilling material, you don’t have to hammer the anchors, you can simply work them in using your fingers. We then proceeded to drill into hole #2 of the mounting plate with the pilot drill and repeated the procedure above, and the same went for hole #3. After all the anchors were placed we tightened the bolts and the plate gripped the concrete securely. There was no play or wiggle at all that can be perceived. The supplied bolt head seals/caps were hammered in place that made the installation permanent. Finally the plastic cover was screwed in place and what you see is the product successfully installed. Many folks advised using a hammer drill. We used a regular corded Dewalt drill and took our time drilling and vacuuming the dust and it worked very well. The job was surprisingly easy and straightforward. Best of all we now something to secure our bicycles and am confident that it will perform as designed. Final impressions: excellent product, easy to follow instructions and all materials needed were supplied for a successful installation. ### ⭐⭐⭐⭐⭐ Holy cow, this thing is huge! *by R***T on September 4, 2016* This is bigger than it looks in the photos. Eight inches diameter and almost two inches thickness makes quite a lump on your garage floor or patio. Before buying this Kryptonite unit I had considered digging a little hole in the floor, pouring in some cement, sinking an eye bolt in that, and waiting for it to set and cure. But hardened eye bolts are hard to find. Nice strong forged ones, sure, but they're not hardened and are very saw-able. So I thought of buying a decent hardened chain and pouring the concrete over most of that, leaving just a few links sticking out. But the chain would cost more than this unit. So I ended up just getting this thing and not pouring any concrete. The included drill bits are good. I tried drilling first with my conventional 1/2" drill, and it worked for a while, but had a gawdawful time getting through whenever it hit a rock; and since I was drilling through concrete, of course there were loads of rocks. So I bought a Harbor Freight 1/2" hammer drill, the cheapest one (about $20). While nowhere near as substantial a piece of machinery as my faithful old non-hammer drill, it worked just fine. It needs some downward pressure but not an unholy amount; let the drill do the work. It took me no more than five minutes of actual drilling time to do all three holes. Your mileage may vary; there's concrete, and then there's concrete. Some concretes are more annoying than others. The inserts are designed to grab in a hole maybe 1.5" deep. My outdoor slab of concrete is thinner than that, not much over an inch. It was poured in the 1920s, when they perhaps weren't so profligate with even cheap materials as they are now. So all three holes went all the way through. While that certainly made it easy to clean the dust out - it all fell through the bottom - it wasn't obvious that there would be enough material for the inserts to grab. I went ahead anyway, and it all seems to have worked OK. A problem - it is essentially impossible to drill three holes in exactly the right places. This is true for all materials and is just the way that conventional drill bits work; when they start to cut they don't do it absolutely symetrically, and the hole wanders. Drilling one hole as a pilot and then widening it with a larger drill makes things even worse; both bits will wander off center when they start cutting, and you'll be even farther off. Which is one reason why in machine shop practice a drilled hole is not considered a high-precision feature. Reaming and boring are precision operations, drilling is not. So in general, holes drilled in concrete won't end up where you want them without spot drilling and some elaborate fixturing which this kit doesn't have. So my holes were off a bit. Actually, they were off rather a lot. I managed to get the screws all started anyway; start them all with the plate not touching the ground (don't tighten one, then expect to get the others to line up, because they won't). Once they're started they'll probably sock down OK. If it hadn't worked, I could have tried again, moving the whole thing a few inches to one side or the other ... or I could have done it the long way, hammering holes through the floor, digging three little pits (or one bigger pit), filling them with fresh concrete, putting coupling nuts, studs and washers in the wet concrete, and lining them all up with the plate before it sets. This method wouldn't use inserts at all. But as it turned out Plan B wasn't needed. The included "L"-shaped hex wrenches are hardly adequate. They fit fine but are just too small to get any decent leverage. I used hex bits and a 1/2" drive flex handle to really torque the lil' buggers down. The finished installation looks nice - about as elegant as one can expect a chain on a floor to be - and feels very solid. I replaced the two flathead screws with stainless ones - just ordinary hardware-store specimens, not hardened or high-strength. They just hold the plastic cover down; it's the three bolts sunk into the concrete which make this secure. My motorcycle seems happy with the whole arrangement, except for being outdoors, and we can't blame Kryptonite for that. ## Frequently Bought Together - Kryptonite Strong Hold Above Ground Lock,Black - Kryptonite 142585 720018999485 Padlock, Black/Yellow, 14mm x 100cm - Kryptonite KryptoFlex Security Cable, 2.6FT/4FT/7FT/30FT Long Braided Steel Flex Bike Lock Anti-Theft Cable with Looped Ends for Outdoor Equipment, U-Lock and Padlock, 5mm-10mm Thick --- ## 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.hr/products/2373625-kryptonite-stronghold-anchor-permanent-indoor-outdoor-bike-locking-point-heavy](https://www.desertcart.hr/products/2373625-kryptonite-stronghold-anchor-permanent-indoor-outdoor-bike-locking-point-heavy) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-15*