304 Stainless Steel Downpipes with 200-Cell Sport Catalytic

The RENNtech Stainless Steel Downpipes with 200 Cell Catalytic Converters are engineered for the 216 CL 63 AMG BiTurbo and 221 S 63 AMG BiTurbo models with the M157 engine series. These performance downpipes are constructed from high-strength 304 stainless steel, replacing the factory's restrictive exhaust components. Featuring high-flow, 200-cell sport catalytics, these downpipes are designed to reduce back pressure, increase exhaust gas volume, and deliver a richer sound. When combined with RENNtech's ECU software, they aim to provide significant performance gains and an enhanced auditory experience. The kit includes all necessary mounting hardware and clamps, ensuring a perfect fit with the stock CL Class exhaust system. These downpipes are listed to provide an estimated gain of +10 HP and +15 LB-FT of torque.