The use by the site of the trademark of other brands falls within the cases referred to in art. 21 of Legislative Decree no. 30 of 10 February 2005 (Industrial Property Code) which in letter c) allows the use of indications "of the trademark to identify or refer to goods or services of the owner of this trademark, in particular if the use of the trademark is necessary to indicate the destination of a product or service, in particular as accessories or spare parts", provided that the use complies with the principles of professional propriety.
In fact, it is also useful to remember paragraph 2 of art. 21, according to which: "It is not permitted to use the mark in a manner contrary to the law, nor, in particular, in such a way as to generate a risk of confusion on the market with other signs known as distinctive of companies, goods or services of others, or to mislead the public, in particular as to the nature, quality or origin of the goods or services, due to the manner and context in which it is used, or to infringe a copyright, industrial property, or other exclusive right of third parties."
"Please note that this website uses motorcycle brands (DUCATI, BMW, HONDA etc.) exclusively for descriptive purposes, i.e. for the sole purpose of indicating the compatibility or destination of the products sold. The use of these trademarks does not imply any affiliation or sponsorship, nor the sale of original products of the trademark owner, unless they are expressly indicated as "original".