Arrow presents the Indy-Race muffler, designed for use on certain motorcycles. The design was inspired by the shape of certain American circuits (hence the name of the range); the cross-section makes it possible to reduce dimensions, while maintaining a good internal volume to dampen noise with very good power output. Internal parts are made of stainless steel, TIG/MIG welded, and the silencer body is available in titanium and aluminum with carbon tip.