---
product_id: 38303503
title: "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"
brand: "kryptonite"
price: "R2243"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Kryptonite"
url: https://www.desertcart.co.za/products/38303503-keeper-712-bike-chain-lock-4-feet-long-heavy-duty
store_origin: ZA
region: South Africa
---

# 7mm hardened steel chain Weather-resistant nylon sleeve Pick & drill resistant lock 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

**Brand:** kryptonite
**Price:** R2243
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in your ride’s safety, unlock your freedom!

## Quick Answers

- **What is this?** 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 by kryptonite
- **How much does it cost?** R2243 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/38303503-keeper-712-bike-chain-lock-4-feet-long-heavy-duty)

## 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 48-Inch Flexibility:** Perfect length for versatile locking on bikes, scooters, gates, and more
- • **Weatherproof & Bike-Friendly:** Durable nylon sleeve prevents scratches and withstands the elements
- • **Unbreakable 7mm Four-Sided Chain:** Maximum cut & leverage resistance for peace of mind
- • **Patented High-Security Locking System:** Disc-style cylinder defies picking and drilling attacks
- • **Anti-Theft Protection & KeySafe Eligible:** Register for exclusive theft protection and hassle-free key replacement

## Overview

The Kryptonite Keeper 712 is a 4-foot long, heavy-duty bike chain lock crafted from 7mm hardened steel with four-sided links for superior cut resistance. Featuring a patented disc-style cylinder lock that resists picking and drilling, it’s wrapped in a weather-resistant nylon sleeve to protect your bike’s finish. Weighing 1.7kg and including two keys, it offers moderate security with flexible use for bikes, motorcycles, scooters, and even gates. Eligible for Kryptonite’s Anti-Theft Protection and KeySafe programs, it’s the trusted choice for millennial professionals who demand reliable, stylish security on the go.

## 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: Best Bike Lock Ever - This is the best Bike lock I have ever gotten . I purchased 2 of these , one for each of our E-Bikes . One night at a campground someone tried to steal our bikes and they could not cut through the chain. It is a heavy thick , very durable chain . I have since purchased one for our genny on our RV . The lock is covered so it won't get wet or dirty .It comes in many lengths and with multiple keys .
Review: Reliable - Best bike lock i ever tried. Comes with 2 keys and has some weight to it. Very easy to use on the daily. I do a figure 8 wrap around the rim. I forgot I left it on there one time, started up my bike and tried to take off. I jerked hard and broke my chain guard. Very reliable

## Features

- HEAVY-DUTY CHAIN: Made from 7mm hardened steel with four-sided links, this bike lock provides maximum resistance against cutting and leverage attacks
- PATENTED LOCKING SYSTEM: Features a high-security disc-style cylinder, resistant to picking and drilling, and a patented end link design that securely connects the chain to a hardened deadbolt, eliminating weak points
- 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 |
|---------------|-------|
| 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 |
| Recommended Uses For Product | Cycling, outdoor |
| Special Feature | Anti-theft |

## 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

![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 - Image 1](https://m.media-amazon.com/images/I/81YrgF7RyIL.jpg)

## Available Options

This product comes in different **Color** 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

### ⭐⭐⭐⭐⭐ Best Bike Lock Ever
*by A***R on October 24, 2025*

This is the best Bike lock I have ever gotten . I purchased 2 of these , one for each of our E-Bikes . One night at a campground someone tried to steal our bikes and they could not cut through the chain. It is a heavy thick , very durable chain . I have since purchased one for our genny on our RV . The lock is covered so it won't get wet or dirty .It comes in many lengths and with multiple keys .

### ⭐⭐⭐⭐⭐ Reliable
*by Q***N on January 1, 2026*

Best bike lock i ever tried. Comes with 2 keys and has some weight to it. Very easy to use on the daily. I do a figure 8 wrap around the rim. I forgot I left it on there one time, started up my bike and tried to take off. I jerked hard and broke my chain guard. Very reliable

### ⭐⭐⭐⭐⭐ Great Lock . Period !
*by C***E on January 2, 2026*

This lock is very strong. Not too heavy easy to use and I use it on all of my bikes.

## 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
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**Shop now:** [https://www.desertcart.co.za/products/38303503-keeper-712-bike-chain-lock-4-feet-long-heavy-duty](https://www.desertcart.co.za/products/38303503-keeper-712-bike-chain-lock-4-feet-long-heavy-duty)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-06*