G8X M2/M3/M4 Monolith V2 Resonated Catback Exhaust

The complete Tone Monolith system for G87 M2 / G80 M3 / G82 M4, pairing our Monolith equal length midpipe with an axleback for a full catback setup. Most S58 catback setups 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. Our Monolith equal length catback's resonated design avoids both: best of both worlds, that high-pitched, aggressive note up top, with the rasp down low cleaned up, all while flowing more than our Z Tech setup. Available in 304 stainless steel or grade 5 titanium, cutting significant weight over the factory system for genuine performance gains, in dual-resonated or quad-resonated configurations. Every catback build can include our Resonated Axleback for the smoothest daily-driving experience. We recommend the quad-resonated catback paired with Catless downpipes as the best all-around setup.