# OnGuard Mastiff 8119 Bicycle Chain Lock

**URL:** https://aio.lv/en/product--onguard-ong-8119--12535058
**Data updated:** 2026-06-25 19:51 (EEST)
**Category:** Kids’ Ride-On Accessories
**Manufacturer:** ONGUARD
**Manufacturer code:** ONG-8119
**EAN:** 7290001283196
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 42.99 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 35.53 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--onguard-ong-8119--12535058

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The OnGuard Mastiff 8119 is a high-security bicycle chain lock designed to provide robust protection against theft. Featuring a durable chain construction, this lock offers flexibility and strength for securing bicycles in various environments. It is an essential accessory for cyclists looking for reliable security, ease of use, and peace of mind when leaving their bike unattended in public areas.

## Long description

The OnGuard Mastiff 8119 bicycle chain lock is a high-security solution engineered to protect your bicycle from theft in various urban and public environments. Built with heavy-duty steel links, this chain lock combines physical strength with the flexibility required to secure your bike to a wide range of stationary objects, such as bike racks, poles, or fences.
Advantages
The primary benefit of the OnGuard Mastiff 8119 is its robust construction, which is specifically designed to resist cutting, sawing, and prying attempts. The chain is encased in a protective fabric sleeve that prevents scratches and damage to your bicycle frame while maintaining a manageable weight for transport. Its flexible design allows for easier locking compared to rigid U-locks, providing versatility when securing your bike in tight or awkward spaces.
Suitable for
Securing bicycles in high-theft urban areas
Locking bikes to racks, posts, or railings
Daily commuting and long-term parking
Protecting high-value bicycles and e-bikes
When it may not be suitable
This lock may not be ideal for cyclists who prioritize extreme weight savings, as the heavy-duty steel construction adds significant mass to your gear. Additionally, if you require a compact lock that fits easily into a small saddlebag, the bulkiness of a chain lock might be less convenient than a folding or cable lock.
Key specifications
Heavy-duty hardened steel chain links
Protective weather-resistant fabric cover
High-security locking mechanism
Flexible design for versatile attachment
How to use
To use the OnGuard Mastiff 8119, wrap the chain around the frame of your bicycle and the stationary object you intend to secure it to. Ensure that the chain passes through the rear wheel and frame if possible to maximize security. Insert the locking end into the mechanism until it clicks securely into place. Always ensure the lock is positioned off the ground to prevent leverage attacks.
What to consider before purchase
The weight of the chain relative to your carrying capacity
The length required to reach your preferred locking points
The level of security needed for your specific environment
Usage recommendations
Regularly lubricate the locking mechanism with a silicone-based spray to ensure smooth operation and prevent internal corrosion, especially if the lock is frequently exposed to rain or road salt.

## FAQ

### How much does the OnGuard Mastiff 8119 Bicycle Chain Lock cost, and is it available for purchase?

The price is 42.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 30 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 23.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All ONGUARD products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized ONGUARD service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12535058/68898584_large.webp