In today’s blog we will try to answer one of the questions most frequently asked by users about the products of the Viro 2Ruote range: “What is the top of the range for bike security?”.

Similar questions have also been asked with regard to the best anti-theft device for mopeds or motorcycles and they will be answered in one of the upcoming blogs.

Since presenting a single solution could meet the needs of many but not everyone, we will discuss in future articles a Top 3 of the 2Ruote Viro anti-theft devices, taking into account not only the level of security and the characteristics of the article in question, but also of the type of vehicle you want to protect (bike, moped or motorcycle).

Here are the Top 3 of the Viro Made in Italy anti-theft devices for bicycles:


Foto Morso with chain

The Morso (brass body covered with a hardened, tempered and nickel-plated steel shell) has a handy structure, with no sharp edges and which can be perfectly integrated with special steel chains. Moreover, its ease of transport makes it suitable for use in the protection of bicycles. Its weight, in fact, in the 90 cm chain version, which more than enough to secure the bike’s frame and wheel to a pole (recommended method), is 900 g. This is heavier than a twisted cable (approximate weight 150 g) but less than other chain locks (approximate weight from 1445 grams upwards) is a good compromise for those who really want to buy a security device without weighing themselves down too much during the ride.

Photo Morso with chain application

The rod head made of case-hardened steel and the brass plug with 4 pins are pull-resistant, whilst the special steel square chain is fixed to the Morso with a stainless steel rivet. The rivet, which fixes the padlock and chain, has a so-called “mushroom” shape which makes it more difficult to break compared with a common pin. The cutting resistance, as seen in the cutting test shown in the video, is high.

Cutting strength test video:

Video comparing Viro Morso vs. imitation after cutting strength test:

For more details and information on the comparison reference should be made to this blog and for information on dimensions and weight, please read the table.

Table for Morso with chain

CONS: greater weight than standard cables.
PROS: lower weight than other padlocks with a chain, high resistance of the chain to cutting, pull-resistance of the plug and of the rod head, anti-theft “mushroom” rivet.


Photo Black Mamba

The Black Mamba extendable anti-theft device is secure and practical and is particularly suitable for securing bikes. It has a robust structure with strong jointed elements, riveted to each other, which are difficult to cut thanks to the case-hardened and tempered steel construction.

The weight is 905 g, therefore, like the Morso, it is a good compromise for those who want a high security anti-theft device without carrying too much weight with them. The results in comfortable and practical transport, also thanks to the fixing support supplied, which can be anchored to the bike frame.

Photo fixing support Black Mamba

The Black Mamba also has a locking mechanism with an automotive type key, with a 4-disc plug and it is completely covered with scratch-resistant ABS.

The cutting tests carried out in the laboratory on the Black Mamba have shown a high resistance to cutting with a saw and a hardness (in HR15N) equal to 70.

Photo Black Mamba application
Table for art. 159.7 (Black Mamba)

CONS: greater weight than standard cables.
PROS: lower weight compared to other padlocks with chains, convenience of transport (fixing support), high resistance to cutting, riveted burglar-proof elements, attractive appearance.


Art. 183 (U-lock with 16 mm cross-section)
Art. 184 (U-lock with 19 mm cross-section)

“U-locks” represent the first choice security system for best protecting bicycles This security system is built with high quality materials with a large square cross-section which makes cutting attempts with shears more difficult, as these are generally designed for cutting round cross-sections.

For the best use, it is always worth assessing the correct dimensions of the span of the “U”, so that it is wide enough to be able to embrace a pole, wheel and frame but without leaving excessive empty space which could facilitate the operations of any thief with burglary tools.

The 16 and 19 mm Viro U-locks have a tempered steel “U”, a ball-type locking mechanism with a double symmetrical locking of the “U” and a 5-disc plug protected by a burglar-proof plate. Furthermore, the lock is protected against the aggression of atmospheric agents.

Photo U-locks application
The picture shows the most common way to tie the bike, but for maximum protection this method is not recommended. The most reliable way is to tie the wheel, the frame and the bike to the pole. It is also possible to use a U-lock, if you choose a model with a sufficiently wide shackle clearance.

The table below shows measurements and weights:

Table for Art. 183 (U-lock with 16 mm cross-section)
Table for Art. 184 (U-lock with 19 mm cross-section)

CONS: heavier than standard cables, Morso and Black Mamba, more uncomfortable to close compared with chains.
PROS: ease of transport, high resistance of U” to cutting, burglar-proof plug plate, resistance against the attack of atmospheric agents.

For more details on the three security systems for bicycles which have been described, please read the respective technical data sheets:

– Morso con catena 
– Black Mamba 
– U-locks with 16 mm square section or 19 mm

One should also not overlook the choice of the correct method to secure the bike because, often, you risk committing one of the six errors described in this blog.

For those who wish to know the estimated level of security of a product of the 2Ruote range which you already posses or for a future purchase, please refer to our ranking: Part 1 and Part 2.

In fact, these two articles already deal with the Viro 2Ruote range, proposing a ranking in increasing order of security. The ranking was drawn up following several tests carried out in our laboratory inside the Viro S.p.A. plant. The company is ISO 9001 certified and the research laboratory has been recognised and authorised since 1996 by the Italian Ministry of University and Scientific and Technological Research.

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