# ONGUARD Bicycle Lock MASTIFF 8125 U-lock with 12 mm shackle, 90 cm cable length

**URL:** https://aio.lv/en/product--onguard-ong-8125--10872208
**Data updated:** 2026-07-08 19:49 (EEST)
**Category:** Bicycle accessories
**Manufacturer:** ONGUARD
**Manufacturer code:** ONG-8125
**EAN:** 7290001281253
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.99 €
**Prices and availability valid until:** 2026-08-15 23:59
**Price without VAT (21%):** 21.48 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--onguard-ong-8125--10872208

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 05.08.2026 | free |
| Pickup points | 10.08.2026 | 1.79 EUR |
| Courier delivery to door | 10.08.2026 | 4.99 EUR |

## Summary description

ONGUARD MASTIFF 8125 is a bicycle security lock combining a 12 mm hardened shackle with a 90 cm cable to secure frame and wheels. Designed for everyday use, it offers flexible routing to lock the bike to posts or racks and helps deter opportunistic theft. Suitable for urban commuting and short stops where moderate protection and convenience are required.

## Long description

ONGUARD MASTIFF 8125 U-lock with 12 mm shackle and 90 cm cable combines a hardened U-shaped shackle for frame security with an integrated flexible cable for securing wheels or accessories. The design allows the shackle to lock around a fixed object while the cable threads through wheel spokes or around removable parts. Intended for everyday urban use, this bike lock balances resistance to common tampering methods with convenience for short stops and commuting.
Advantages
The 12 mm hardened shackle provides improved cut resistance compared with thinner shackles while the additional 90 cm cable increases versatility by allowing both the frame and wheels to be secured with a single system. The construction is compact enough for routine carry but long enough to reach most posts and racks. The combined system reduces the need for carrying separate locks and enables multiple locking configurations depending on the parking situation.
Suitable for
Urban commuting and short stops in city environments
Securing both frame and front or rear wheel when parking at bike racks or posts
Situations where moderate theft deterrence and portability are needed
Key specifications
Shackle diameter: 12 mm hardened steel
Cable length: 90 cm flexible coated cable
Lock type: U-lock (D-lock) combined with cable
Suitable for: bicycles, e-bikes, scooters and similar personal transport
Finish: protective coating to reduce paint damage
How to use
Place the U-lock shackle around a solid fixed object and the bike frame where possible, then thread the 90 cm cable through wheel spokes or removable parts and secure it to the U-lock before closing. Confirm the shackle is fully engaged and the key or locking mechanism operates smoothly. When removing, unlock the shackle first, withdraw the cable, and stow both components securely in a mount or bag. Regularly inspect the lock and cable for wear, corrosion, or damage.
Usage recommendations
Choose well-lit, busy locations and position the lock to minimize access to the shackle and cable with cutting tools. Use the cable to immobilize wheels or accessories and the U-lock to secure the frame to a fixed object. For higher-risk areas or long-term parking, consider supplementing with an additional heavy-duty lock or using a reinforced anchor point.

## FAQ

### How much does the ONGUARD MASTIFF 8125 bicycle lock cost, and is it available for purchase?

The price is 25.99 € (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 05.08.2026 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/10872208/60277226_large.webp