---
product_id: 14091925
title: "Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D"
brand: "master lock"
price: "€ 43.34"
currency: EUR
in_stock: true
reviews_count: 13
category: "Master Lock"
url: https://www.desertcart.fr/products/14091925-master-lock-black-bike-lock-with-key-standard-size-u
store_origin: FR
region: France
---

# Double-locking shackle for max pry resistance Hardened steel body resists cutting & sawing Compact 7-1/4 inch U-lock fits most bikes Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D

**Brand:** master lock
**Price:** € 43.34
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in peace of mind, unlock your freedom.

## Quick Answers

- **What is this?** Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D by master lock
- **How much does it cost?** € 43.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/14091925-master-lock-black-bike-lock-with-key-standard-size-u)

## Best For

- master lock enthusiasts

## Why This Product

- Trusted master lock brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Urban & Suburban Ready:** Perfectly sized for versatile use, whether you’re navigating city streets or quiet trails.
- • **Scratch-Free Confidence:** Protective vinyl coating keeps your bike’s finish flawless while locking down your ride.
- • **Pick-Resistant Precision:** Integrated disc keyed locking mechanism ensures only you hold the keys to your freedom.
- • **Unmatched Anti-Theft Armor:** Hardened steel body and double-locking shackle create an impenetrable fortress for your bike.
- • **Effortless Security On-The-Go:** Lightweight design with included carrier bracket means protection travels with you, hassle-free.

## Overview

The Master Lock 8320D Black U-Lock combines hardened alloy steel and a double-locking shackle to deliver superior anti-theft protection for bicycles and outdoor equipment. Its compact 7-1/4 inch size fits most bikes, while the protective vinyl coating prevents scratches. Featuring an integrated disc keyed locking mechanism for maximum pick resistance and a convenient carrier bracket, this lock offers professional-grade security with user-friendly portability.

## Description

The Master Lock U-Lock is engineered for those who value their ride. This bicycle lock offers unparalleled security to ensure your bike stays right where you left it. It is crafted from hardened steel that can withstand significant impacts and resist all manner of attempts at tampering or cutting. This makes it an exceptional choice among bike locks for anyone serious about anti-theft security. The bike lock body is 7-1/4 inches wide with a 9-inch shackle length. Whether you are locking up your bicycle in a bustling urban environment or a quieter suburban area, trust that this heavy-duty bike lock has you covered. Its imposing presence alone deters would-be thieves before they even think about attempting anything nefarious. But what sets this U-lock bike apart from others? The answer lies in its intuitive design and ease of use. Despite its strength and durability, the Master Lock 8320D U-Lock is incredibly user-friendly. It boasts a double-locking mechanism providing twice the security while ensuring quick access when you need to unlock it swiftly. Lightweight yet sturdy, this U-lock fits easily into most backpacks or bike accessory bags without weighing you down. Investing in the Master Lock U-Lock means investing in long-term security for your precious ride. Unlock superior protection now with Master Lock: where studied design meets impenetrable strength.

Review: Exellence - Absolutely love this lock, the thickness gives me ease of mind. Quality is tip top especially for the price you pay for it. Comes with keys and holder for your bike that you can install. The bar unlocks from both sides making it very easy to install and unlock your bike from racks.
Review: Thick and good quality - Someone stole my hose reel so I bought this to lock it to the water pipe, needless to say I still have my hose reel this is heavy duty and realiable

## Features

- Hardened steel body resists cutting, sawing and prying.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
- Double locking shackle for superior pry resistance
- Protective vinyl coating helps prevent scratching
- Integrated disc keyed locking mechanism for maximum pick resistance
- Carrier bracket included for easy transportation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00QJRKSTQ |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #7,321 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Bike U-Locks #1,488 in Hardware |
| Brand | Master Lock |
| Color | Black |
| Connectivity Protocol | Wi-Fi |
| Control Method | Touch |
| Controller Type | Hand Control |
| Customer Reviews | 4.5 4.5 out of 5 stars (5,156) |
| Date First Available | December 4, 2014 |
| Finish | Polished |
| Finish Type | Polished |
| Global Trade Identification Number | 00071649205255 |
| Included Components | Lock |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 2.12 pounds |
| Item dimensions L x W x H | 9.8 x 7.42 x 1.35 inches |
| Item model number | 8320D |
| Lock Type | Key Lock |
| Manufacturer | Master Lock |
| Material | Alloy Steel, Vinyl |
| Model Name | 8320D |
| Number of Pieces | 1 |
| Part Number | 8320D |
| Product Dimensions | 9.8 x 7.42 x 1.35 inches |
| Recommended Uses For Product | Bike |
| Shape | U Shape |
| Size | 7-1/4 inch U-Lock |
| Special Feature | Unlock keys |
| Special Features | Unlock keys |
| Style | Lock |
| UPC | 071649205255 |

## Product Details

- **Brand:** Master Lock
- **Item dimensions L x W x H:** 9.8 x 7.42 x 1.35 inches
- **Lock Type:** Key Lock
- **Material:** Alloy Steel, Vinyl
- **Special Feature:** Unlock keys

## Images

![Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D - Image 1](https://m.media-amazon.com/images/I/61Qpogjaf7L.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exellence
*by A***K on December 31, 2025*

Absolutely love this lock, the thickness gives me ease of mind. Quality is tip top especially for the price you pay for it. Comes with keys and holder for your bike that you can install. The bar unlocks from both sides making it very easy to install and unlock your bike from racks.

### ⭐⭐⭐⭐⭐ Thick and good quality
*by B***A on February 23, 2026*

Someone stole my hose reel so I bought this to lock it to the water pipe, needless to say I still have my hose reel this is heavy duty and realiable

### ⭐⭐⭐⭐⭐ Excellent lock....
*by R***O on December 16, 2025*

The lock works great. Real easy to use.

## Frequently Bought Together

- Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D
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**Shop now:** [https://www.desertcart.fr/products/14091925-master-lock-black-bike-lock-with-key-standard-size-u](https://www.desertcart.fr/products/14091925-master-lock-black-bike-lock-with-key-standard-size-u)

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-03-23*