S58 Catless Race Downpipe (3.5") — BMW X3M & X4M

A 3.5" mandrel-bent catless race downpipe for the BMW S58-powered X3M and X4M, built for unrestricted flow and a more aggressive exhaust note.

Complete Kit Includes:

• Mandrel-bent 3.5" design for unrestricted flow and reduced backpressure
• 304-grade stainless steel, hand TIG-welded with CAD/CAM optimized CNC flanges
• Smooth radius bends minimize turbulence and maximize flow efficiency
• Fits both RHD and LHD configurations
• CEL delete kit available separately for catless installs

Installation: Direct bolt-on fitment using factory mounting locations; compatible with factory and aftermarket mid-pipes. Catless versions may trigger a check engine light — a CEL Delete Kit is available separately to address this.

Fitment:

• BMW X3M (F97)
• BMW X4M (F98)