F Chassis EWG Race Catted Downpipe 4″

We limited the quantity to one piece per buyer according to the high demand!

Hi-Flow Race Catted downpipe for the BMW N55 F10/F11/F07 535i/Xi F12/F13 640i F15/F16 X5 X6 with EWG turbo. RVG Performance Hi-Flow Race Catted offers the best balance of reliability, performance, and cost per horsepower available for your car.

Replacing the factory downpipe, with the Hi-Flow Race Catted downpipe, results in a quicker spool, an improvement in horsepower, a deeper exhaust note. With a Hi-Flow Race Catted downpipe, the engine bay temperature will drop significantly, which results in better longevity for the turbos, valves seals, and all hoses and plastic.

We use a highly optimized design to ensure we offer better quality than our competitors, wider diameter, and smooth mandrel-bent design, which allows a more significant increase in airflow. Our downpipes are handcrafted from SS304 stainless steel and include a lifetime warranty for any manufacturing defects.

For best gains we recommend to be combined with MHD:
Stage 1 91 octane: 25%HP / 28%TQ
Stage 1 93 octane: 27%HP / 30%TQ
Stage 2 91 octane: 31%HP / 34%TQ
Stage 2 93 octane: 33%HP / 36%TQ

This product is for racing competition only and can’t be installed on road-legal cars

BMW’s built after July 2014* with the N55 engine with EWG Turbo and 18327643427 oem downpipe found on

5′ F07 535i 535xi xdrive GT
5′ F10 535i 535xi xdrive
5′ F11 535i 535xi xdrive
5′ F18 535i 535xi xdrive
6′ F06 640i 640xi xdrive Gran Coupé
6′ F12 640i 640xi xdrive
6′ F13 640i 640xi xdrive
X5 F15 3.5i
X6 F16 3.5i