3" Catless Downpipes for S63

The Jcparts 3" Catless Downpipes are a performance upgrade for the BMW M5 F10, M6 F12, and M6 Gran Coupe F06 equipped with the S63 motor from 2011-2018. Constructed from hand-crafted, mandrel-bent SS304 stainless steel, these downpipes feature a CNC stainless steel v-band to pipe transition and a full 3" diameter design that maintains size until the final inches to promote greater flow. This design significantly reduces backpressure by eliminating restrictive catalytic converters, resulting in faster turbo spool, an increase in power and torque, and a more aggressive exhaust note. Key features include CAD/CAM designed CNC flanges, smooth radius bends for decreased turbulence, and compatibility with both Left Hand Drive (LHD) and Right Hand Drive (RHD) models without modification. The manufacturer claims an increase of 50-55 HP and 60-65 TQ when the system is tuned. Installation involves replacing the factory downpipes; two downpipes are included in the package. The product is described as 100% brand new and a catless manifold type. Note: While the product is listed for specific BMW models, one customer review indicated that a similar product did not fit a Ram 1500 ecodiesel, highlighting the importance of verifying fitment for your exact vehicle configuration.