---
product_id: 70277552
title: "Kryptonite Keeper 712 Combo Bike Chain Lock, 4-Foot 7mm Steel Heavy Duty Anti-Theft Resettable Combination Chain for Bicycles, E-Bikes & Scooters, Sold Secure Bronze | chain-bike-locks"
brand: "kryptonite"
price: "$159.07"
currency: USD
in_stock: true
reviews_count: 13
category: "Kryptonite"
url: https://www.desertcart.us/products/70277552-kryptonite-keeper-712-combo-bike-chain-lock-4-foot-7mm
store_origin: US
region: United States of America
---

# 7mm 3T manganese steel chain Weather-resistant nylon sleeve Sold Secure Bronze anti-theft rating Kryptonite Keeper 712 Combo Bike Chain Lock, 4-Foot 7mm Steel Heavy Duty Anti-Theft Resettable Combination Chain for Bicycles, E-Bikes & Scooters, Sold Secure Bronze | chain-bike-locks

**Brand:** kryptonite
**Price:** $159.07
**Availability:** ✅ In Stock

## Summary

> 🔒 Lock in your ride’s safety with style and zero keys!

## Quick Answers

- **What is this?** Kryptonite Keeper 712 Combo Bike Chain Lock, 4-Foot 7mm Steel Heavy Duty Anti-Theft Resettable Combination Chain for Bicycles, E-Bikes & Scooters, Sold Secure Bronze | chain-bike-locks by kryptonite
- **How much does it cost?** $159.07 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/70277552-kryptonite-keeper-712-combo-bike-chain-lock-4-foot-7mm)

## 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:** 4-foot length balances secure locking reach with easy portability—throw it over your shoulder and go.
- • **Scratch-Free Durability:** Durable nylon sleeve shields your bike’s frame from scratches while protecting the chain from weather damage.
- • **Unmatched Urban Security:** 7mm four-sided manganese steel chain resists cutting & leverage attacks for peace of mind in the city.
- • **Keyless Convenience & Backup:** Customizable 4-digit combo with over 10,000 codes plus online safe storage means no keys, no hassle.
- • **Certified Bronze-Level Protection:** Sold Secure Bronze rating ensures reliable defense for everyday commutes and quick stops.

## Overview

The Kryptonite Keeper 712 Combo Bike Chain Lock features a 7mm four-sided 3T manganese steel chain with a Sold Secure Bronze rating, offering strong resistance against common theft methods. Its 4-foot length provides versatile locking options while remaining portable at 4.5 lbs. A weather-resistant nylon sleeve protects both your bike and the chain, and the resettable 4-digit combination lock offers keyless convenience backed by Kryptonite’s Combo Safe Program and lifetime warranty.

## Description

The 712 Integrated Chain features an end-link locking point for extensive holding power and 7mm four-sided chain links made from 3T manganese steel. Rated at a 5 / 10 on our security scale, it is good for quick stops in a metropolitan area, a few hours in the suburbs or overnight in rural areas. The hardened deadbolt design provides extra holding power and the disc-style cylinder is both pick and drill resistant. The lock comes with two new ergonomic "I" keys and a weather-resistant nylon sleeve to prevent scratches. The lock is 120 cm long and weighs 3.75 lbs.

Review: Throw it over your shoulder and ride. Not super heavy but a solid deterant. - Exactly what I was hoping for. the roughly 4' length allows me to simply throw it over a my head and carry it across my torso so the bike itself does not feel any heavier. Keyless is a huge plus as I don't like to have to carry a set of keys with me. Form, function, durability.....easy to use. What else could you really ask for in a bike lock. Did I mention if your bike is stolen they have a $500 cash back?
Review: Good Bike Lock for Medium Security Needs - Good bike lock for medium security needs. I wouldn't use it for an extended time period like overnight outside in a poorly lit area. Open end fits through the loop of a cable allowing additional protection of wheels and frame. It's heavy but that's a good thing!

## Features

- HEAVY‑DUTY ANTI‑THEFT BIKE CHAIN LOCK: Built with 7 mm four‑sided 3T manganese steel chain links, this heavy‑duty bike chain lock provides strong resistance against cutting and leverage attacks, making it ideal for city bikes, e‑bikes, scooters, and motorcycles
- SOLD SECURE BRONZE RATED SECURITY: Certified by Sold Secure and rated a 5/10 on Kryptonite’s internal security scale, this lock meets Bronze‑level standards for resistance against common theft methods. Featuring a patent-pending end link design for keyless holding power, it is perfectly suited for moderate‑risk areas, quick stops, and everyday commuting
- 4‑FT (120 CM) COMPACT & STRONG CHAIN DESIGN: The Kryptonite Keeper 712 Combo features a 4‑ft (approx. 120 cm / 47.2 in) length, offering the perfect balance of secure locking reach for thicker poles and easy portability; total lock weight is approx. 4.5 lbs (2.04 kg)
- PROTECTIVE NYLON SLEEVE & WEATHER RESISTANCE: Includes a durable, weather‑resistant nylon sleeve to help protect your bike frame from scratches and paint damage, while shielding the heavy-duty chain against the elements to extend its lifespan
- CUSTOMIZABLE 4-DIGIT COMBINATION: Features a smooth, positive-indexing dial with a 4-digit resettable combination, giving you over 10,000 possible codes. It is fully backed by the Kryptonite Combo Safe Program, which securely stores your code online in case you ever forget it
- ANTI‑THEFT PROTECTION & LIFETIME WARRANTY: Eligible for Kryptonite’s Anti‑Theft Protection Offer (ATPO) with coverage for registered locks. Kryptonite also offers a limited lifetime warranty and dedicated Customer Experience support, ensuring total peace of mind and product quality

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B078HTBSY6 |
| Additional Features | Portable |
| Best Sellers Rank | #11,509 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #13 in Bike Chain Locks |
| Brand | Kryptonite |
| Brand Name | Kryptonite |
| Color | Black |
| Control Method | Touch |
| Controller Type | Hand Control |
| Customer Reviews | 4.5 out of 5 stars 727 Reviews |
| Finish Types | Natural |
| Global Trade Identification Number | 00720018003298 |
| Included Components | Chain |
| Item Dimensions | 15 x 4 x 6 inches |
| Item Type Name | Security Lock |
| Item Weight | 4.5 Pounds |
| Item dimensions L x W x H | 15 x 4 x 6 inches |
| Lock Type | Combination Lock |
| Manufacturer | Kryptonite |
| Manufacturer Part Number | 003298 |
| Manufacturer Warranty Description | Limitied Lifetime Warranty |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model Name | Kryptonite Keeper 712 Combo Chain |
| Model Number | 720018003298 |
| Number of Pieces | 1 |
| Recommended Uses For Product | Security |
| Shape | Round |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special Feature | Portable |
| Style Name | Chain Lock |
| UPC | 720018003298 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Kryptonite
- **Item dimensions L x W x H:** 15 x 4 x 6 inches
- **Lock Type:** Combination Lock
- **Material:** Alloy Steel
- **Special Feature:** Portable

## Images

![Kryptonite Keeper 712 Combo Bike Chain Lock, 4-Foot 7mm Steel Heavy Duty Anti-Theft Resettable Combination Chain for Bicycles, E-Bikes & Scooters, Sold Secure Bronze | chain-bike-locks - Image 1](https://m.media-amazon.com/images/I/81bX4mdDWOL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Throw it over your shoulder and ride. Not super heavy but a solid deterant.
*by D***N on June 12, 2025*

Exactly what I was hoping for. the roughly 4' length allows me to simply throw it over a my head and carry it across my torso so the bike itself does not feel any heavier. Keyless is a huge plus as I don't like to have to carry a set of keys with me. Form, function, durability.....easy to use. What else could you really ask for in a bike lock. Did I mention if your bike is stolen they have a $500 cash back?

### ⭐⭐⭐⭐⭐ Good Bike Lock for Medium Security Needs
*by M***E on September 22, 2025*

Good bike lock for medium security needs. I wouldn't use it for an extended time period like overnight outside in a poorly lit area. Open end fits through the loop of a cable allowing additional protection of wheels and frame. It's heavy but that's a good thing!

### ⭐⭐⭐⭐⭐ Good value to the money. Highly recommended.
*by J***E on October 31, 2025*

Heavy-duty lock chain with a simple heavy-duty combination lock. Setting your own combination is easy. It could also be used as a weapon in case of an emergency.

## Frequently Bought Together

- Kryptonite Keeper 712 Combo Bike Chain Lock, 4 Feet Long 7mm Steel Chain Heavy Duty Anti-Theft Bicycle Chain Lock, 4-Digit Resettable Combination Lock for E-Bike Scooter Road Mountain Bikes
- Apple AirTag 4 Pack
- 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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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-05*