The NRP Z-Pipe Equal Length Valved Exhaust System for the BMW F97 X3M and F98 X4M replaces the factory exhaust from the downpipes back with a full valved catback built around the same 3D-printed 316L stainless Z-Pipe core as our G8x M3/M4 systems. Equal-length pipes carry both banks of the S58 the same distance to the core, where sculpted internal passages guide and equalize the two exhaust streams instead of letting them collide in a bent-tube X. The result is the clean, high-pitched note the M3 and M4 get, with none of the rasp. Electronic valves keep it quiet with the valves closed and open it all the way up when you want it. Direct bolt-on using the factory mounting points, and 100% reversible.
Features:
- Equal-length design — both banks travel the same distance to the core
- 3D-printed 316L stainless Z-Pipe core — sculpted internal passages equalize the two exhaust streams; cleaner tone, no rasp, stable at high RPM
- Electronic exhaust valves — quiet with the valves closed, full volume open
- Mandrel-bent, TIG-welded construction for maximum flow
- Works with the OEM downpipes or any aftermarket downpipes built for them
- No check engine light — fully post-cat
- Direct bolt-on, no cutting or welding; 100% reversible
- NRP Lifetime Warranty
Fitment:
- 2020+ BMW F97 X3M (including Competition)
- 2020+ BMW F98 X4M (including Competition)
Professional installation recommended.
