Not homologated. Without catalytic converters. Precision-machined slip-on stainless steel exhaust silencer set with 80 mm diameter. Although not homologated, it comes with a removable homologated dB killer (708849); a racing dB killer (708859) is available as an option. Chrome-plated finish. 80 mm diameter. With CNC-machined end caps made of Ergal (7075 aluminum) with “double ring”. With removable dB killer. Note: See 708849 for the standard replacement dB killer or 708859 for the optional racing dB killer.