VRSF BMW S58 X3M/X4M (F97/F98) PRE-LCI High Flow Catted Downpipes

These catted downpipes are the best bang-for-buck modification available for the S58, with genuine gains of 30whp and 35wtq as a direct bolt-on, climbing to as much as 60whp and 100wtq when paired with a DME remap. By replacing the restrictive factory catalytic converter with VRSF's high-flow, 200-cell catalytic converter, backpressure is significantly reduced, resulting in faster turbo spool, a genuine increase in power, and a noticeably more aggressive exhaust note.

Rather than necking down closer to the turbos the way most competitor downpipes do, these feature a smooth mandrel-bent design for a significant increase in flow. Hand-crafted from 304-grade stainless steel tubing with CAD/CAM-optimised CNC flanges, they're built to last, backed by a genuine lifetime warranty.

Works with: OEM mounting points and turbo connections. Direct bolt-on installation.

Why Choose These Downpipes

• 30whp/35wtq gain as a direct bolt-on, up to 60whp/100wtq with a DME remap
• High-flow 200-cell catalytic converter replaces the restrictive factory unit
• Smooth mandrel-bent design, doesn't neck down near the turbos like many competitors
• Hand-crafted 304-grade stainless steel construction
• CAD/CAM-optimised, CNC-machined flanges for precise fitment
• Genuine lifetime warranty

Compatibility

• BMW F97 X3M (2019-2021, Pre-LCI, S58)
• BMW F98 X4M (2019-2021, Pre-LCI, S58)