# Bicycle lock GERDA CONTRA chain lock 900 x 6 mm, hardened steel chain with protective sleeve

**URL:** https://aio.lv/en/product--gerda-5902203333563--11211399
**Data updated:** 2026-04-14 14:17 (EEST)
**Category:** Outdoor & Sports Accessories
**Manufacturer:** GERDA
**Manufacturer code:** 5902203333563
**EAN:** 5902203333563
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 16.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 13.63 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--gerda-5902203333563--11211399

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

GERDA CONTRA is a bicycle chain lock with dimensions 900 x 6 mm designed for securing bikes and scooters. It features a hardened steel chain and an outer protective sleeve to prevent scratches and reduce corrosion. Suitable for everyday urban use, it provides physical theft deterrence for parking at racks, stands, or poles.

## Long description

GERDA CONTRA chain lock 900 x 6 mm is a bicycle and scooter security device designed for everyday urban use. The product consists of a 900 mm long, 6 mm thick hardened steel chain covered by a protective fabric sleeve that reduces scratching and helps limit corrosion. The construction is intended to provide a visible and physical deterrent when securing a bike to racks, stands, railings or poles.
Advantages
The hardened steel chain increases resistance to cutting tools compared with non-hardened links, while the protective sleeve preserves frame paintwork and dampens metal-on-metal contact. Its 900 mm length offers flexibility for locking frames and wheels to fixed objects, and the compact cross-section makes it practical to carry without excessive weight. The simple form factor supports straightforward handling and quick deployment in daily use.
Suitable for
Securing bicycles at bike racks and parking stands
Locking scooters and e-bikes for short to medium duration stops
Attaching a bike frame and at least one wheel to a fixed object
Urban commuters seeking a portable, visible deterrent
When it may not be suitable
As a chain lock with 6 mm link thickness, this product is intended for everyday urban security rather than high-risk, long-term outdoor storage in isolated locations. It will not be fully resistant to professional-grade power tools or determined theft attempts using heavy cutting equipment. For maximum protection in high-theft areas, consider combining the chain with an additional lock or using a heavier-duty security solution.
Key specifications
Chain length: 900 mm
Link thickness: 6 mm
Material: hardened steel chain with protective sleeve
Protective sleeve: outer fabric to reduce scratches and exposure
Intended use: bicycles and scooters, urban everyday locking
How to use
Wrap the chain around the bike frame and a secure fixed object such as a rack, stand or pole, passing through the frame triangle and at least one wheel when possible. Ensure the chain passes through rigid parts of the frame rather than quick-release components. Fasten the locking mechanism according to the lock type and keep the sleeve positioned to protect paintwork during handling. Store the chain on the bike or in a bag when not in use, and inspect the sleeve and links regularly for wear or damage.
What to consider before purchase
Required security level relative to typical parking locations (short stops vs. long-term, high-risk areas)
Compatibility of chain length with the objects you normally lock to (bike frame, wheels, fixed posts)
Portability and weight for daily carrying
Usage recommendations
For improved security, use the chain in combination with a U-lock or disc lock to secure both frame and wheels, park in well-lit, busy areas, and avoid leaving the bicycle unattended for prolonged periods in high-theft locations. Regularly check the protective sleeve and clean or lubricate the lock mechanism to maintain function.

## FAQ

### How much does the Bicycle lock GERDA CONTRA 900 x 6 mm cost, and is it available for purchase?

The price is 16.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 13 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 03.07.2026 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 GERDA 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 GERDA 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/11211399/68529480_large.webp