---
product_id: 777441007
title: "Bike U Lock - Sigtuna Bike Lock Cut Resistant, Heavy Duty Anti-Theft with 4ft/1.2m Cable, Bicycle Lock Made in Cut-Resistant Special Steel with Sturdy Mounting Bracket for Bikes, Ebikes, Scooters."
brand: "sigtuna"
price: "37913 Ft"
currency: HUF
in_stock: true
reviews_count: 10
category: "Sigtuna"
url: https://www.desertcart.hu/products/777441007-bike-u-lock-sigtuna-bike-lock-cut-resistant-heavy-duty
store_origin: HU
region: Hungary
---

# 4ft/1.2m heavy-duty cable included 16mm cut-resistant steel core Dual locking mechanism for max security Bike U Lock - Sigtuna Bike Lock Cut Resistant, Heavy Duty Anti-Theft with 4ft/1.2m Cable, Bicycle Lock Made in Cut-Resistant Special Steel with Sturdy Mounting Bracket for Bikes, Ebikes, Scooters.

**Brand:** sigtuna
**Price:** 37913 Ft
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in your ride’s safety—because your bike deserves fortress-level protection.

## Quick Answers

- **What is this?** Bike U Lock - Sigtuna Bike Lock Cut Resistant, Heavy Duty Anti-Theft with 4ft/1.2m Cable, Bicycle Lock Made in Cut-Resistant Special Steel with Sturdy Mounting Bracket for Bikes, Ebikes, Scooters. by sigtuna
- **How much does it cost?** 37913 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/777441007-bike-u-lock-sigtuna-bike-lock-cut-resistant-heavy-duty)

## Best For

- sigtuna enthusiasts

## Why This Product

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

## Key Features

- • **Urban-Ready Design:** Sturdy mounting bracket and heat-resistant coating for all-weather resilience.
- • **Effortless Operation:** Smooth push-button control and easy-turn key for daily convenience.
- • **Unbreakable Security:** Dual locking system demands two cuts—thieves beware.
- • **Versatile Protection:** Includes 4ft cable for locking bikes, e-bikes, and scooters with ease.
- • **Industrial-Grade Steel:** Cut-resistant 16mm alloy steel core built to withstand attacks.

## Overview

The Sigtuna Bike U Lock combines a 16mm cut-resistant alloy steel core with a dual locking mechanism, delivering heavy-duty anti-theft protection. Featuring a 4ft/1.2m cable and a sturdy mounting bracket, this heat-resistant lock is designed for bikes, e-bikes, and scooters. Its push-button control and smooth key operation make securing your ride effortless, while the industrial-grade build ensures durability in urban environments.

## Description

desertcart.com: Bike U Lock - Sigtuna Bike Lock Cut Resistant, Heavy Duty Anti-Theft with 4ft/1.2m Cable, Bicycle Lock Made in Cut-Resistant Special Steel with Sturdy Mounting Bracket for Bikes, Ebikes, Scooters. : Sports & Outdoors

Review: Nice lock, works well, seems secure. Heavy but not overly so. - I wanted to upgrade my bike lock (actually, one of my bike locks - I use two U-locks in the city) to one that was thicker and - more important - has dual locking mechanisms so that two cuts would be required to remove the lock. The Sigatuna is a bit thicker, and has the dual locking mechanism (there seems to be some controversy as to whether its really 16mm or whether that is padded by the plastic coat on the steel - I don't know the answer). I thought the reviews here were encouraging so ordered it. I've been quite happy with it for the 1 month I've had it. Its a bit heavier than my other U-lock (Krypto-Lok) but definitely not "too heavy". And I suspect its much better security. The key has been easy to turn - something that was a problem with the other Master U lock I had that this replaced. I don't use the frame mounting bracket so can't comment on that - I have a rat-trap carrier and I keep it in that secured with a bungee cord. And I actually don't use the cable - and I think its generally a bad idea because all of them are easily cut. I have found that a much more convenient and secure way is to have two U locks. So I have this as my "heavy duty" lock, and a Krypto-Lok as my secondary one (and which fits through the perforations on my helmet allowing that to be securely locked to the bike). A second U lock is so much more convenient to carry than a cumbersome cable. I have the Kryptonite lock mounted to the frame, and keep the Sigatuna lock in the rat-trap carrier. It doesn't offer theft protection insurance - but that doesn't bother me. (1) My bike isn't worth that much - less than the deductible! Well, its wort a lot to me, but not money. (2) Somehow I suspect that the fine print on all those bike lock insurance plans are smarter than most bicyclists - and I rather doubt they really ever pay.
Review: Heavy duty lock - High quality lock that does what it's supposed to do. The chain is quite heavy duty and wrapped in a plastic casing to protect the bike; because of that doesn't uncoil easily so takes a bit of effort to wind it through wheels and around the bike. But it has kept my bike safe.

## Features

- Bike U Lock

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DSVQRHS4 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #108,326 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #63 in Bike U-Locks |
| Brand | SIGTUNA |
| Color | Hermes orange |
| Control Method | Push Button |
| Customer Reviews | 4.5 4.5 out of 5 stars (10,439) |
| Date First Available | January 13, 2025 |
| Item Weight | 3.11 pounds |
| Item dimensions L x W x H | 5.47 x 1.4 x 6.77 inches |
| Item model number | 850055349148 |
| Lock Type | Combination Lock |
| Manufacturer | Sigtuna |
| Material | Alloy Steel |
| Product Dimensions | 5.47 x 1.4 x 6.77 inches |
| Recommended Uses For Product | Securing bicycles |
| Size | Medium - Diameter(16mm) |
| Special Feature | Heat Resistant |
| Special Features | Heat Resistant |
| Style | Industrial |
| UPC | 850055349148 |

## Product Details

- **Brand:** SIGTUNA
- **Item dimensions L x W x H:** 5.47 x 1.4 x 6.77 inches
- **Lock Type:** Combination Lock
- **Material:** Alloy Steel
- **Special Feature:** Heat Resistant

## Images

![Bike U Lock - Sigtuna Bike Lock Cut Resistant, Heavy Duty Anti-Theft with 4ft/1.2m Cable, Bicycle Lock Made in Cut-Resistant Special Steel with Sturdy Mounting Bracket for Bikes, Ebikes, Scooters. - Image 1](https://m.media-amazon.com/images/I/41RgtG6vzrL.jpg)
![Bike U Lock - Sigtuna Bike Lock Cut Resistant, Heavy Duty Anti-Theft with 4ft/1.2m Cable, Bicycle Lock Made in Cut-Resistant Special Steel with Sturdy Mounting Bracket for Bikes, Ebikes, Scooters. - Image 2](https://m.media-amazon.com/images/I/51+JkTiOydL.jpg)
![Bike U Lock - Sigtuna Bike Lock Cut Resistant, Heavy Duty Anti-Theft with 4ft/1.2m Cable, Bicycle Lock Made in Cut-Resistant Special Steel with Sturdy Mounting Bracket for Bikes, Ebikes, Scooters. - Image 3](https://m.media-amazon.com/images/I/51WGgtcVYYL.jpg)
![Bike U Lock - Sigtuna Bike Lock Cut Resistant, Heavy Duty Anti-Theft with 4ft/1.2m Cable, Bicycle Lock Made in Cut-Resistant Special Steel with Sturdy Mounting Bracket for Bikes, Ebikes, Scooters. - Image 4](https://m.media-amazon.com/images/I/51e4UeW2CXL.jpg)
![Bike U Lock - Sigtuna Bike Lock Cut Resistant, Heavy Duty Anti-Theft with 4ft/1.2m Cable, Bicycle Lock Made in Cut-Resistant Special Steel with Sturdy Mounting Bracket for Bikes, Ebikes, Scooters. - Image 5](https://m.media-amazon.com/images/I/51yLsr-L8cL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice lock, works well, seems secure. Heavy but not overly so.
*by R***N on December 2, 2018*

I wanted to upgrade my bike lock (actually, one of my bike locks - I use two U-locks in the city) to one that was thicker and - more important - has dual locking mechanisms so that two cuts would be required to remove the lock. The Sigatuna is a bit thicker, and has the dual locking mechanism (there seems to be some controversy as to whether its really 16mm or whether that is padded by the plastic coat on the steel - I don't know the answer). I thought the reviews here were encouraging so ordered it. I've been quite happy with it for the 1 month I've had it. Its a bit heavier than my other U-lock (Krypto-Lok) but definitely not "too heavy". And I suspect its much better security. The key has been easy to turn - something that was a problem with the other Master U lock I had that this replaced. I don't use the frame mounting bracket so can't comment on that - I have a rat-trap carrier and I keep it in that secured with a bungee cord. And I actually don't use the cable - and I think its generally a bad idea because all of them are easily cut. I have found that a much more convenient and secure way is to have two U locks. So I have this as my "heavy duty" lock, and a Krypto-Lok as my secondary one (and which fits through the perforations on my helmet allowing that to be securely locked to the bike). A second U lock is so much more convenient to carry than a cumbersome cable. I have the Kryptonite lock mounted to the frame, and keep the Sigatuna lock in the rat-trap carrier. It doesn't offer theft protection insurance - but that doesn't bother me. (1) My bike isn't worth that much - less than the deductible! Well, its wort a lot to me, but not money. (2) Somehow I suspect that the fine print on all those bike lock insurance plans are smarter than most bicyclists - and I rather doubt they really ever pay.

### ⭐⭐⭐⭐⭐ Heavy duty lock
*by G***E on December 10, 2025*

High quality lock that does what it's supposed to do. The chain is quite heavy duty and wrapped in a plastic casing to protect the bike; because of that doesn't uncoil easily so takes a bit of effort to wind it through wheels and around the bike. But it has kept my bike safe.

### ⭐⭐⭐⭐ Solid lock, solid purchase
*by A***R on September 20, 2016*

This is a solid bike, and the cable is easy to manage. I probably should have gotten a bigger one, but it works well enough for my uses and the lock itself fits pretty well with the key and isn't too loose/finicky. I haven't had it long enough to know if it will be susceptible to corrosion, but I suspect that it should be fine. My issues are small: 1) the key is the traditional plastic-head/aluminum key that all locks seem to have. I'm not really sure why bike locks can't have more traditional locks or brass/steel keys (closer to my house keys) that fit on my keyring and work more smoothly (like my front door), but it is a little annoying. 2) The lock wobbles a bit in it's mounting bracket. While the bracket itself is very secure (might be the best one I've had actually), the clip on the lock is not as tight a fit with the bracket, and so it shakes a bit. Doesn't affect anything though, apart from making an annoying noise in bumpier terrain

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-03*