---
product_id: 662481132
title: "RockSolid U-Lock – Angle Grinder Resistant 14mm Hardened Steel Bike Lock with X4P Quad Locking Mechanism, Lightweight Anti-Theft Design, Includes 5 Keys & Theft Protection, 3.5” x 6.9”"
brand: "onguard"
price: "€ 420.39"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/662481132-rocksolid-u-lock-angle-grinder-resistant-14mm-hardened-steel-bike
store_origin: SK
region: Slovakia
---

# X4P Quad Locking Mechanism Angle Grinder Resistant RockSolid Coating 14mm Hardened Steel Shackle RockSolid U-Lock – Angle Grinder Resistant 14mm Hardened Steel Bike Lock with X4P Quad Locking Mechanism, Lightweight Anti-Theft Design, Includes 5 Keys & Theft Protection, 3.5” x 6.9”

**Brand:** onguard
**Price:** € 420.39
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in elite security, unlock your freedom.

## Quick Answers

- **What is this?** RockSolid U-Lock – Angle Grinder Resistant 14mm Hardened Steel Bike Lock with X4P Quad Locking Mechanism, Lightweight Anti-Theft Design, Includes 5 Keys & Theft Protection, 3.5” x 6.9” by onguard
- **How much does it cost?** € 420.39 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/662481132-rocksolid-u-lock-angle-grinder-resistant-14mm-hardened-steel-bike)

## Best For

- onguard enthusiasts

## Why This Product

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

## Key Features

- • **Grind-Proof Armor:** Proprietary RockSolid coating resists angle grinder attacks in high-risk urban zones.
- • **Lightweight Security:** Robust protection at just 3 lbs—carry it effortlessly without compromise.
- • **Peace of Mind Included:** Anti-Theft Protection program covers up to $5001 for registered bikes.
- • **Quadruple Locking Power:** X4P four-point locking system secures your bike from every angle of attack.
- • **Unmatched Cut Resistance:** Engineered 14mm hardened steel shackle defies cutting and sawing attempts.

## Overview

The OnGuard RockSolid U-Lock combines a 14mm hardened steel shackle with an advanced X4P quad locking mechanism and proprietary angle grinder resistant coating to deliver top-tier bike security. Weighing only 3 lbs, it balances portability with heavy-duty protection, and includes 5 keys plus an Anti-Theft Protection program for registered users, making it the ultimate choice for urban cyclists and powersport enthusiasts seeking peace of mind.

## Description

RockSolid U-Lock – Angle Grinder Resistant 14mm Hardened Steel Bike Lock with X4P Quad Locking Mechanism, Lightweight Anti-Theft Design, Includes 5 Keys & Theft Protection, 3.5” x 6.9”

## Features

- Angle Grinder Resistant Design: Engineered with OnGuard’s proprietary RockSolid coating that resists angle grinder attacks, offering elite-level protection in high-risk urban environments for cyclists and commuters.
- X4P Quad Locking Mechanism: Features a high-security four-point locking system that secures the shackle from every direction, providing superior resistance to pulling, jacking, and prying attempts by thieves.
- Heavy-Duty 14mm Shackle: Built from hardened steel, this U-lock delivers outstanding strength and durability, effectively deterring cutting, sawing, or twisting attacks while maintaining a manageable weight.
- Lightweight Yet Tough: Weighing only 3 lbs, the OnGuard RockSolid U-Lock strikes the perfect balance between robust security and portability, making it easy to carry on your bike or in a backpack.
- Anti-Theft Protection Program: Includes up to $5001 bicycle and $1251 powersport coverage (with registration, where available) for extra peace of mind and confidence in OnGuard’s trusted lock technology.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | ONGUARD |
| Special Feature | Cut Resistant |
| Lock Type | Pin Tumbler |
| Item dimensions L x W x H | 0.55 x 3.5 x 6.88 inches |
| Material | Alloy Steel |
| Recommended Uses For Product | Cycling, Motorcycle, Powersports |
| Style | U-lock |
| Color | Black |
| Number of Pieces | 1 |
| Finish Type | Natural |
| Included Components | keys |
| Controller Type | Hand Control |
| Shape | U Shape |
| Item Weight | 3 Pounds |
| Control Method | Touch |
| UPC | 768661285906 |
| Model Name | RockSolid |
| Manufacturer | OnGuard |
| Item Weight | 3 pounds |
| Product Dimensions | 0.55 x 3.5 x 6.88 inches |
| Item model number | 8590 |
| Manufacturer Part Number | 8590 |
| Special Features | Cut Resistant |

## Product Details

- **Brand:** ONGUARD
- **Special Feature:** Cut Resistant
- **Lock Type:** Pin Tumbler
- **Item dimensions L x W x H:** 0.55 x 3.5 x 6.88 inches
- **Material:** Alloy Steel

## Images

![RockSolid U-Lock – Angle Grinder Resistant 14mm Hardened Steel Bike Lock with X4P Quad Locking Mechanism, Lightweight Anti-Theft Design, Includes 5 Keys & Theft Protection, 3.5” x 6.9” - Image 1](https://m.media-amazon.com/images/I/61vGDwfR7QL.jpg)

## Frequently Bought Together

- OnGuard RockSolid U-Lock – Angle Grinder Resistant (3.5” x 6.9”) for Bicycle, Motorcycle, Powersport – 14mm Shackle, X4P Locking Mechanism, Lightweight, 5 Keys Included, Anti-Theft Protection
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**Shop now:** [https://www.desertcart.sk/products/662481132-rocksolid-u-lock-angle-grinder-resistant-14mm-hardened-steel-bike](https://www.desertcart.sk/products/662481132-rocksolid-u-lock-angle-grinder-resistant-14mm-hardened-steel-bike)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-24*