DUCATI DIAVEL 2013 2014 Exhaust ZARD Black RC D117SSR-B. Zard products are a synthesis of craftsmanship and technology. The highest quality raw materials are used: tubes and sheets in AISI 304 stainless steel, titanium and carbon. TIG - MIG / MAG weldings are handmade by specialized operators. The products are tested on the road and on a test bench and each production step is carried out with the utmost care and attention.