---
product_id: 4165425
title: "Master Lock 8170D, 6-1/8 inch Wide U-Lock with 8\" Shackle, Black"
brand: "master lock"
price: "$90"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/4165425-master-lock-8170d-6-1-8-inch-wide-u-lock
store_origin: NZ
region: New Zealand
---

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

**Brand:** master lock
**Price:** $90
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in your ride’s safety with Master Lock’s fortress-grade U-Lock!

## 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?** $90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/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

- • **Effortless Portability:** Lightweight 2-pound design with included carrier bracket for on-the-go convenience.
- • **Built to Last a Lifetime:** Vinyl-coated alloy steel with limited lifetime warranty for enduring protection.
- • **Quick Access, No Compromise:** Secure yet user-friendly key lock ensures fast unlocking when you need it.
- • **Perfect Fit for Urban Riders:** 6-1/8 inch wide body with 8 inch shackle fits most bike frames and locking spots.
- • **Unmatched Anti-Theft Defense:** Double-locking shackle and hardened steel body keep your bike untouchable.

## Overview

The Master Lock 8170D is a heavy-duty U-lock designed for serious bike security. Featuring a 6-1/8 inch wide hardened steel body and an 8 inch double-locking shackle, it offers superior resistance to cutting and prying. Weighing just under 2 pounds and including a carrier bracket, it balances portability with impenetrable strength. Ideal for urban and suburban cyclists, it comes with two keys and a limited lifetime warranty, making it a trusted choice for long-term bike protection.

## Description

Master Lock 8170D, 6-1/8 inch Wide U-Lock with 8" Shackle, Black

## 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 |
|---------------|-------|
| Brand | Master Lock |
| Special Feature | Heavy Duty |
| Lock Type | Key Lock |
| Item dimensions L x W x H | 9.8 x 7.33 x 1.33 inches |
| Material | Alloy Steel, Rubber |
| Recommended Uses For Product | Bike |
| Style | Lock |
| Color | Black |
| Number of Pieces | 1 |
| Finish Type | Vinyl Coating |
| Included Components | U-lock bike lock, two keys, and a carrier bracket |
| Controller Type | Hand Control |
| Shape | U Shape |
| Item Weight | 2 Pounds |
| Control Method | Touch |
| UPC | 071649222771 |
| Model Name | 8170D |
| Global Trade Identification Number | 00071649222771 |
| Manufacturer | Master Lock |
| Part Number | 8170D |
| Item Weight | 1.96 pounds |
| Product Dimensions | 9.8 x 7.33 x 1.33 inches |
| Item model number | 8170D |
| Is Discontinued By Manufacturer | No |
| Size | 6-1/8 inch U-Lock |
| Finish | Vinyl Coating |
| Item Package Quantity | 1 |
| Special Features | Heavy Duty |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Limited Lifetime Warranty |

## Product Details

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

## Images

![Master Lock 8170D, 6-1/8 inch Wide U-Lock with 8" Shackle, Black - Image 1](https://m.media-amazon.com/images/I/41inXLLWYOL.jpg)

## Available Options

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

## 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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**Shop now:** [https://www.desertcart.nz/products/4165425-master-lock-8170d-6-1-8-inch-wide-u-lock](https://www.desertcart.nz/products/4165425-master-lock-8170d-6-1-8-inch-wide-u-lock)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-01-24*