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Performance Exhaust Systems

Based in the Netherlands, BOS is a family business that has specialised in the design and manufacture of motorcycle exhaust systems for over 50 years now. All the developments and years of experience from the world of motorbike racing go into the production process. Only the best materials are used, together with state-of-the-art technology. In 1994, BOS became the first company to homogolate an absorption silencer in conjunction with a dB killer for EU approval. This system and the unmistakable muffled, throaty BOS sound is now available for many motorbike models.

Stainless steel is a collective term for rustproof steel. It is much more resistant to corrosion than non-alloyed steels. Stainless steel does not deteriorate, and is hygienic, UV-resistant, non-corroding, fracture-proof, non-toxic and environmentally friendly. It does not weather and can be recycled in its entirety, even after many years. Technically, the term "stainless steel" refers to corrosion-resistant steel alloys with a wide variety of compositions but always containing a high percentage of chromium (usually a minimum of 10.5%)

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MAINTENANCE:
Stainless steel should be cleaned regularly like all other materials, especially after exposure to salty air (near the coast), and also at regular intervals.
Water can easily collect in corners, edges and screw connections, resulting in corrosion. So careful cleaning is important, and if necessary screws should be undone in order to clean the parts thoroughly.
Do not leave rusty steel parts against stainless steel to avoid the rust "contamination".

Modern vehicle accessories of different types now frequently carry an "E" approval mark valid throughout Europe. This "E" mark, which is made up of a combination of letters and numbers, is clearly displayed on the product and shows the application tested, the country in which testing was carried out and, where appropriate, the vehicle type to which approval applies. EC type approvals for exhaust systems, for example, are always issued for a specific vehicle type, whereas in the case of lighting, they apply to an entire group of vehicles, e.g. motorcycles.
This certification mark is the sole proof of legality stipulated by law, i.e. no written report or entry in the vehicle documents by a TÜV (German Technical Inspection Association) test centre is required. However, when it comes to installing accessories, the relevant guidelines of the Road Traffic Licensing Regulations (StvZO) must always be observed.
At a roadside check or a TÜV vehicle inspection, the registered keeper is only required to show the "E" mark. It is then up to the official in charge whether to check the mark with the Federal Motor Transport Authority (KBA) in Flensburg (or equivalent type approval authority in other countries), which is able to decode all certification marks.