VRSF BMW N55 F1X PWG Catless Downpipe

This direct bolt-on, high-flow downpipe is the best bang-for-buck modification available for the N55-powered 535i and 640i, and the wider F1X/E70/E71 range sharing this engine. By eliminating the restrictive catalytic converter in the factory downpipe, backpressure is significantly reduced, resulting in faster turbo spool, a genuine increase in power, and a more aggressive exhaust note.

This is a genuinely separate product from VRSF's 135i/335i N55 downpipe, engineered specifically for the larger-chassis F1X/E70/E71 applications. It features a full 3.5in stainless steel design, hand-crafted from SS304-grade stainless steel with smooth radius bends to decrease turbulence, and includes a lifetime warranty alongside VRSF's "No Hassle" satisfaction guarantee covering fitment.

Important fitment note: there isn't an exact year cutoff for the 3.5in (PWG) versus 4in (EWG) versions across every model in this range. VRSF strongly recommends sending a photo of your wastegate from the engine bay to verify fitment before ordering, this is a genuine step worth taking rather than guessing based on model year alone.

Intended use: removal of emissions equipment means this part is intended for closed-course/competition use, not for road use where emissions compliance is required.

Why Choose This Downpipe

• Direct bolt-on fitment engineered specifically for the F1X/E70/E71 chassis range
• Fully catless design for maximum exhaust flow and turbo response
• Full 3.5in stainless steel construction, hand-crafted SS304
• Smooth radius bends to decrease turbulence and increase flow
• Lifetime warranty plus "No Hassle" satisfaction guarantee on fitment

Compatibility

• BMW F10/F11 535i/535xi (N55, PWG, please verify wastegate)
• BMW F07 535i/535xi Gran Turismo (N55, PWG, please verify wastegate)
• BMW F12/F13 640i/640xi (N55, PWG, please verify wastegate)
• BMW F01/F02 740i/740Lix (N55, PWG, please verify wastegate)
• BMW E70 X5 xDrive35i (N55, PWG, 2009-2013)
• BMW E71 X6 xDrive35i (N55, PWG, 2009-2014)

PWG only. EWG-equipped vehicles (including F15 X5 and F16 X6, 2014+) require VRSF's separate 4in downpipe, sold separately.