VRSF Racing Downpipes N63 550i, 650i, 750i, X5, X6 | 2008-18

The VRSF race downpipes replace the factory downpipes and catalytic converters on BMWs with the N63 4.4-liter twin-turbo V8. They fit the 550i and 550i GT, the 650i convertible and Gran Coupe, the 750i, 750Li and Alpina B7, and the X5 and X6 xDrive50i. Choose the 2-bolt or slip-fit mid-pipe connection to match your car.

What It Does

The N63 mounts its turbos inside the V of the engine, so the downpipes and converters sit in a very hot, tight space. Replacing them with free-flowing stainless pipes cuts back pressure, which helps the turbos spool and lowers heat in that area. VRSF measures 50 to 55 hp and 60 to 65 lb-ft at the wheels with a tune.

Which Flange Do I Need?

The option refers to how the downpipe connects to the mid pipe. Cars built from 2008 to March 2011 generally use a 2-bolt flange, and cars built from April 2011 on use a slip-fit joint. Please enter your year and model at checkout so we can confirm before shipping.

Materials and Construction

Each pipe is hand made from mandrel bent 304 stainless steel, TIG welded with smooth radius bends. The flanges are CAD/CAM designed and CNC machined. The slip-fit version is also offered with a heat shield wrap. The pipes fit left- and right-hand-drive cars with no modification.

Features

• Mandrel-bent 304 stainless steel
• CAD/CAM CNC flanges
• 2-bolt or slip-fit mid-pipe connection
• Heat shield option on the slip-fit version
• 50-55 hp and 60-65 lb-ft at the wheels with a tune (VRSF figures)
• Fits LHD and RHD cars

What Is Included

• Pair of VRSF N63 race downpipes with the flange and finish you choose

Required Parts

• An engine tune is needed to run catless downpipes without fault codes.
• A pair of 3.5in turbo-to-downpipe V-band clamps is an optional add-on above.

Specs

• Part numbers: 10102063 (2-bolt), 10102070 (slip fit), 10102078 (slip fit with heat shield)
• Brand: VRSF
• Material: 304 stainless steel, TIG-welded
• Engine: N63 4.4L twin-turbo V8
• Type: catless race downpipes
• Shipping dimensions: 28 x 12 x 7 in (71 x 30 x 18 cm) for the 2-bolt version; 28 x 12 x 7 in (71 x 30 x 18 cm) for the slip-fit versions
• Shipping weight: 14 lb (6.4 kg) for the 2-bolt version; 13 lb (5.9 kg) for the slip-fit versions

Fitment Notes

• N63 engines only. The later N63R in the G30 M550i, G05 X5 M50i and G12 750i uses the VRSF N63R downpipes.
• X5 M and X6 M (S63) have their own VRSF downpipes.
• Race downpipes remove the catalytic converters and are sold for off-road and competition use only. A tune is needed to run them without fault codes.