F9X X3M/X4M S58 Tone Z Tech Midpipe

Most S58 midpipes force a trade-off: live with single-midpipe drone, or put up with the typical 2,000 RPM rasp that comes with an equal-length design's higher-pitched scream. Z Tech avoids both. Its equal-length design pairs a lightweight Z crossover with resonators, cutting real weight over the factory midpipe while it cleans up the rasp down low and keeps that aggressive, high-pitched top-end scream intact, best of both worlds. Choose dual-resonated for the classic Z Tech sound, or quad-resonated for an even more refined, quieter note. Fits F97 X3M / F98 X4M. Pair it with an axleback to complete a full catback system.