--- product_id: 38303503 title: "Kryptonite Keeper 712 Bike Chain Lock, 4ft Heavy Duty Anti-Theft Lock | Weather-resistant, 120cm long, hardened steel 7mm links, 2 keys, 5/10 security rating, for motorcycles, scooters, or gates" brand: "kryptonite" price: "$149.35" currency: USD in_stock: true reviews_count: 13 category: "Kryptonite" url: https://www.desertcart.us/products/38303503-kryptonite-keeper-712-bike-chain-lock-4ft-heavy-duty-anti store_origin: US region: United States of America --- # 7mm hardened steel chain weather-resistant nylon sleeve pick & drill resistant lock cylinder Kryptonite Keeper 712 Bike Chain Lock, 4ft Heavy Duty Anti-Theft Lock | Weather-resistant, 120cm long, hardened steel 7mm links, 2 keys, 5/10 security rating, for motorcycles, scooters, or gates **Brand:** kryptonite **Price:** $149.35 **Availability:** ✅ In Stock ## Summary > 🛡️ Lock it down, ride worry-free — because your bike deserves Kryptonite-level protection! ## Quick Answers - **What is this?** Kryptonite Keeper 712 Bike Chain Lock, 4ft Heavy Duty Anti-Theft Lock | Weather-resistant, 120cm long, hardened steel 7mm links, 2 keys, 5/10 security rating, for motorcycles, scooters, or gates by kryptonite - **How much does it cost?** $149.35 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/38303503-kryptonite-keeper-712-bike-chain-lock-4ft-heavy-duty-anti) ## 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 - • **Compact Yet Mighty:** 47.3-inch chain length offers flexible locking options without compromising on strength or portability. - • **Weatherproof Armor:** Durable nylon sleeve shields your bike’s finish and the lock itself from scratches and harsh elements. - • **Peace of Mind Guarantee:** Eligible for Kryptonite’s Anti-Theft Protection Offer and KeySafe key replacement program for ultimate security confidence. - • **Advanced Security Cylinder:** Pick and drill resistant disc-style lock cylinder keeps your bike safe from common theft tools. - • **Unbreakable 7mm Hardened Steel Chain:** Four-sided links engineered to resist cutting and leverage attacks, securing your ride like a fortress. ## Overview The Kryptonite Keeper 712 is a 4ft (120cm) heavy-duty bike chain lock crafted from 7mm four-sided hardened steel links, designed to resist cutting and leverage attacks. Featuring a weather-resistant nylon sleeve to protect your bike’s finish and a pick- and drill-resistant disc-style lock cylinder, it balances robust security with flexible use. Weighing 3.7 lbs, it’s built for serious cyclists who demand reliable theft deterrence and peace of mind, backed by Kryptonite’s Anti-Theft Protection and KeySafe programs. ## Description Keeper 712 Integrated Chain Lock features 7mm four-sided chain links made from 3t manganese steel. Patent-Pending End Link Design secures chain to hardened deadbolt eliminating critical vulnerability and providing extra holding power. High security disc-style cylinder is pick and drill resistant; resists most common hand tools. Durable weather-resistant nylon sleeve prevents scratches to painted finishes and protects the chain against the elements. With a 48-inch (120cm) chain length, the Kryptonite Keeper 712 is a flexible, compact and easy to use deterrent security. Review: Secure lock - Its a great lock. Very strong and heavy. I dont think anyone will be cutting through this. Review: It's Still There. - While kind of 'pricey' the thought of losing an item that's costly itself & a necessary form of transportation these days was a huge factor in selection of this security device. As the collapse of society seems more evident every day, the thought of some miscreant 'Coming-Up'... was another motivating factor in investing in a good locking device. This lock is a Beast. It is quite heavy, so those concerned about weight may want to reevaluate choices. In this case, weight wasn't so much an issue. Theft deturent WAS. Cable bike locks can easily be cut with simple cheap cable-cutters quickly. This lock? Not so much. Can it be cut? Yup. Quickly & quietly? Nope. Can it be picked? Yup. Quickly? Nope. Good thick high-test chain was only option. Not liking paint or frame damaged by intense rubbing and/or chain banging, a high-quality sheath was highly motivational in this selection. While the weight can be a drawback, another small issue is the lock cylinder can be a bit finicky at times. However this can be sort reassuring in of itself, by being rather difficult for a novice 'picker' lacking proper tools. Appearance was another deciding factor as it looks tough, rugged & matches bike styling. And... in a 'pinch'...it could make a hellva defensive weapon. 'Peace-of-Mind'... Who can put a price on that? When a beloved 'high-value' item has to be left unattended, it's nice to see that it's... "Right where I left it". ## Features - HEAVY-DUTY CHAIN: Made from 7mm hardened steel with four-sided links, this bike lock provides maximum resistance against cutting and leverage attacks - PROTECTIVE FEATURES: Durable rubber coating around helps prevent scratching and wear and tear on your bike. Durable WEATHER-RESISTANT nylon sleeve prevents scratches - DURABLE DESIGN: Keeper 712 Integrated Chain extends up to 120cm (47.3 in) in circumference, crafted from 7mm hardened steel links. Heavy-duty bike lock weighs 1.70kg (3.75 lbs). Includes two keys and rated 5/10 for moderate security on our scale. - ATPO & KEYSAFE PROGRAM ELIGIBLE: Register to qualify for Kryptonite's Anti-Theft Protection Offer and KeySafe key replacement service ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00WE0A0JA | | Additional Features | Anti-theft | | Best Sellers Rank | #6,640 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #12 in Bike Chain Locks | | Brand | Kryptonite | | Brand Name | Kryptonite | | Color | Black | | Control Method | Touch | | Controller Type | Hand Control | | Customer Reviews | 4.6 out of 5 stars 2,153 Reviews | | Finish Types | Painted | | Global Trade Identification Number | 00720018001706 | | Included Components | Kryptonite 001706 | | Item Dimensions | 7.09 x 7.09 x 1.18 inches | | Item Highlight | Weather-resistant, 120cm long, hardened steel 7mm links, 2 keys, 5/10 security rating, for motorcycles, scooters, or gates | | Item Type Name | LOCK | | Item Weight | 3.7 pounds | | Item dimensions L x W x H | 7.09 x 7.09 x 1.18 inches | | Lock Type | Pin Tumbler | | Manufacturer | Kryptonite | | Manufacturer Part Number | 001706 | | Manufacturer Warranty Description | Manufacturer Warranty | | Material | Alloy Steel | | Material Type | Alloy Steel | | Model Name | Kryptonite Keeper 712 Integrated Chain | | Model Number | 720018001706 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Recommended Uses For Product | Cycling, outdoor | | Shape | catena | | Special Feature | Anti-theft | | Style Name | Kryptonite Cadena Antirrobo Keeper 712-7mmx120cm Integrado 32" 001706 Black | | UPC | 720018001706 | | Unit Count | 1 Count | ## Product Details - **Brand:** Kryptonite - **Item dimensions L x W x H:** 7.09 x 7.09 x 1.18 inches - **Lock Type:** Pin Tumbler - **Material:** Alloy Steel - **Special Feature:** Anti-theft ## Images ![Kryptonite Keeper 712 Bike Chain Lock, 4ft Heavy Duty Anti-Theft Lock | Weather-resistant, 120cm long, hardened steel 7mm links, 2 keys, 5/10 security rating, for motorcycles, scooters, or gates - Image 1](https://m.media-amazon.com/images/I/81YrgF7RyIL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: does this chain have keys** A: Yes. It comes with a set of 2 keys **Q: how big a hole in diameter does it need to fit through?** A: The 48" Keeper 712 has a 1.3 inch diameter at the thickest part. **Q: is it 'lead' free?** A: This product does actually contain lead, and has a prop-65 warning. You can look on the Kryptonite website directly for more information. **Q: Does this lock have theft protection?** A: This lock PROVIDES theft protection for your bike/trike/whatever. It is very secure, requiring a key to open. They send two keys with the lock. The heavy sleeve over the robust chain protects whatever it touches. I've had mine for over two years and it shows no wear. It's a great item. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Secure lock *by L***P on August 5, 2026* Its a great lock. Very strong and heavy. I dont think anyone will be cutting through this. ### ⭐⭐⭐⭐⭐ It's Still There. *by D***N on October 30, 2024* While kind of 'pricey' the thought of losing an item that's costly itself & a necessary form of transportation these days was a huge factor in selection of this security device. As the collapse of society seems more evident every day, the thought of some miscreant 'Coming-Up'... was another motivating factor in investing in a good locking device. This lock is a Beast. It is quite heavy, so those concerned about weight may want to reevaluate choices. In this case, weight wasn't so much an issue. Theft deturent WAS. Cable bike locks can easily be cut with simple cheap cable-cutters quickly. This lock? Not so much. Can it be cut? Yup. Quickly & quietly? Nope. Can it be picked? Yup. Quickly? Nope. Good thick high-test chain was only option. Not liking paint or frame damaged by intense rubbing and/or chain banging, a high-quality sheath was highly motivational in this selection. While the weight can be a drawback, another small issue is the lock cylinder can be a bit finicky at times. However this can be sort reassuring in of itself, by being rather difficult for a novice 'picker' lacking proper tools. Appearance was another deciding factor as it looks tough, rugged & matches bike styling. And... in a 'pinch'...it could make a hellva defensive weapon. 'Peace-of-Mind'... Who can put a price on that? When a beloved 'high-value' item has to be left unattended, it's nice to see that it's... "Right where I left it". ### ⭐⭐⭐⭐⭐ Very nice product *by K***K on June 3, 2026* Great bike chain! I use it for my e‑bike and it’s solid, durable, and super easy to carry in my backpack. The protective sleeve is awesome too — no scratches on my paint. Definitely recommend this one. ## Frequently Bought Together - Kryptonite Keeper 712 Bike Chain Lock, 4 Feet Long Heavy Duty Anti-Theft Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence,Black - Lamicall Bike Phone Holder, Motorcycle Phone Mount - Motorcycle Handlebar Cell Phone Clamp, Scooter Phone Clip for iPhone 15 Pro Max/Plus, 14 Pro Max, S9, S10 and More 4.7" to 6.8" Smartphones - Wsdcam 113dB Bike Alarm Wireless Vibration Motion Sensor Waterproof Motorcycle Alarm with Remote --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/38303503-kryptonite-keeper-712-bike-chain-lock-4ft-heavy-duty-anti](https://www.desertcart.us/products/38303503-kryptonite-keeper-712-bike-chain-lock-4ft-heavy-duty-anti) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-04*