Gapped Industries W205 C63/s Catless Race DownpipesC63 s W205 Catless Race Downpipes 2015 2023 For your 2015 2023 C63 or C63s AMG W205 Generation with the M177 engine. Engineered to perfection, our Gapped Industries C63 s downpipes offer significantly enhanced performance for your W205 C63 s without long term reliability concerns. Our race engineered catless downpipes are designed to relieve back pressure from the turbos to the exhaust, thereby resulting in increased engine power, responsiveness, and