---
product_id: 4165425
title: "Master Lock 8170D, 6-1/8 inch Wide U-Lock with 8\" Shackle, Black"
brand: "master lock"
price: "222.77 DT"
currency: TND
in_stock: false
reviews_count: 13
category: "Master Lock"
url: https://www.desertcart.tn/products/4165425-master-lock-8170d-6-1-8-inch-wide-u-lock
store_origin: TN
region: Tunisia
---

# Double-locking shackle for max security Hardened steel body resists cutting & prying Includes carrier bracket for on-the-go ease Master Lock 8170D, 6-1/8 inch Wide U-Lock with 8" Shackle, Black

**Brand:** master lock
**Price:** 222.77 DT
**Availability:** ❌ Out of Stock

## Summary

> 🔐 Lock in peace of mind, ride with confidence.

## Quick Answers

- **What is this?** Master Lock 8170D, 6-1/8 inch Wide U-Lock with 8" Shackle, Black by master lock
- **How much does it cost?** 222.77 DT with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/4165425-master-lock-8170d-6-1-8-inch-wide-u-lock)

## 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

- • **User-Friendly Access:** Unlock from both sides quickly with included keys—security without the struggle.
- • **Perfect Fit Precision:** 6-1/8 inch wide body and 8 inch shackle designed to secure a wide range of bike frames and racks.
- • **Effortless Portability:** Lightweight design with included carrier bracket means security travels with you, hassle-free.
- • **Trusted Brand Reliability:** Master Lock’s legacy of quality ensures your investment is backed by a limited lifetime warranty.
- • **Unmatched Anti-Theft Defense:** Double locking shackle and hardened steel body create an impenetrable fortress for your bike.

## Overview

The Master Lock 8170D is a heavy-duty U-lock engineered with a 6-1/8 inch wide hardened steel body and an 8 inch double-locking shackle, delivering superior resistance against cutting and prying. Designed for serious cyclists, it includes a convenient carrier bracket for easy transport and comes with two keys. Trusted for its durability and backed by a limited lifetime warranty, this lock offers professional-grade security that fits seamlessly into your active lifestyle.

## 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 6-1/8-inches wide with an 8-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 8170D 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: Secure lock to prevent theft! - Great lock. Needed it for my scooter and never failed me once over 1 year of use. Couple of my friends had a wire lock and their scooters unfortunately got stolen. The lock is very durable, and it comfortably fit around my scooter with no struggle. Also, had to ship the lock across the country in the same box as the scooter and it did get banged up a bit with visible scratches but it didn't affect the durability at all! Ended up forgetting my key at times too, but luckily they give a backup key! Only concern would be that the key is annoying to use sometimes, but never bothered me in any significant way. Definitely recommend.
Review: Works well - Secure ..adjustable with locking chain..looks intimidating..

## Features

- Outdoor heavy duty bike U-lock is best used as a bicycle lock.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
- U-shaped steel bike lock with key; Includes carrier bracket for easy transportation
- Bike lock features a hardened steel body and double locking shackle for superior cutting and prying resistance
- Bike lock body is 6-1/8 in. (16 cm) wide, with 8 in. (20 cm) shackle length, 4 in. (10 cm) width and 1/2 in. (13 mm) diameter
- Includes one u-lock bike lock, two keys

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0017L4PAC |
| Additional Features | Heavy Duty |
| Best Sellers Rank | #1,402 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2 in Bike U-Locks |
| Brand | Master Lock |
| Brand Name | Master Lock |
| Color | Black |
| Control Method | Touch |
| Controller Type | Hand Control |
| Customer Reviews | 4.5 out of 5 stars 4,883 Reviews |
| Finish Types | Vinyl Coating |
| Global Trade Identification Number | 00071649222771 |
| Included Components | U-lock bike lock, two keys, and a carrier bracket |
| Item Dimensions | 9.8 x 7.33 x 1.33 inches |
| Item Type Name | U Lock |
| Item Weight | 1.96 Pounds |
| Item dimensions L x W x H | 9.8 x 7.33 x 1.33 inches |
| Lock Type | Key Lock |
| Manufacturer | Master Lock |
| Manufacturer Part Number | 8170D |
| Manufacturer Warranty Description | Limited Lifetime Warranty |
| Material | Alloy Steel , Rubber |
| Material Type | Alloy Steel, Rubber |
| Model Name | 8170D |
| Model Number | 8170D |
| Number of Pieces | 1 |
| Recommended Uses For Product | Bike |
| Shape | U Shape |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special Feature | Heavy Duty |
| Style Name | Lock |
| UPC | 071649222771 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Master Lock
- **Item dimensions L x W x H:** 9.8 x 7.33 x 1.33 inches
- **Lock Type:** Key Lock
- **Material:** Alloy Steel, Rubber
- **Special Feature:** Heavy Duty

## Images

![Master Lock 8170D, 6-1/8 inch Wide U-Lock with 8" Shackle, Black - Image 1](https://m.media-amazon.com/images/I/51aWlO8agvL.jpg)
![Master Lock 8170D, 6-1/8 inch Wide U-Lock with 8" Shackle, Black - Image 2](https://m.media-amazon.com/images/I/917OpSU-+FL.jpg)
![Master Lock 8170D, 6-1/8 inch Wide U-Lock with 8" Shackle, Black - Image 3](https://m.media-amazon.com/images/I/51OuV-A2jvL.jpg)
![Master Lock 8170D, 6-1/8 inch Wide U-Lock with 8" Shackle, Black - Image 4](https://m.media-amazon.com/images/I/91xYGLGOPaL.jpg)
![Master Lock 8170D, 6-1/8 inch Wide U-Lock with 8" Shackle, Black - Image 5](https://m.media-amazon.com/images/I/61tYPsAF6CL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Secure lock to prevent theft!
*by M***T on September 26, 2025*

Great lock. Needed it for my scooter and never failed me once over 1 year of use. Couple of my friends had a wire lock and their scooters unfortunately got stolen. The lock is very durable, and it comfortably fit around my scooter with no struggle. Also, had to ship the lock across the country in the same box as the scooter and it did get banged up a bit with visible scratches but it didn't affect the durability at all! Ended up forgetting my key at times too, but luckily they give a backup key! Only concern would be that the key is annoying to use sometimes, but never bothered me in any significant way. Definitely recommend.

### ⭐⭐⭐⭐⭐ Works well
*by C***R on May 16, 2026*

Secure ..adjustable with locking chain..looks intimidating..

### ⭐⭐⭐⭐⭐ Strong and compact
*by J***. on March 12, 2026*

Simple and nice locker. I sued for a scotter but also fits a bike easily

## Frequently Bought Together

- Master Lock 8170D, 6-1/8 inch Wide U-Lock with 8" Shackle, Black
- Master Lock Bike Lock Cable with Combination Black, 8143D
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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-06-01*