Facebook Revel Medalion Touring S Y Pipe 2016 2017 Infiniti Q50 3.0t RWD Q50 Red Sport 400 RWD Facebook Diffuser Infiniti Q50 2017 2018. The Revel Medallion Touring S exhaust system is constructed from full SUS304 stainless steel for corrosion resistance & durability, and 1. 5mm wall thickness piping for increased strength and reduced resonation. The piping is also mandrel bent in order to retain the same piping diameter at the bends thus optimizing exhaust flow characteristings. 70 60mm Piping