VRSF 3" F10 BMW M5 Stainless Steel Catless Downpipe: Adds 50-55 HP to the wheels & 60-65 TQ to the wheels. CAD/CAM designed CNC flange. Hand made from mandrel bent, tig welded 3" 304 grade stainless steel Smooth radius bends to decrease turbulence and increase flow. Fits RHD and LHD models with no modification necessary VRSF Lifetime Warranty against defects and fitment.