The aFe MACHForce-XP exhaust for your G29 Z4 M40i delivers power gains plus it has an aggressive sound when you want it and a mellow tone when you’re cruising. This high-quality, free-flowing exhaust system is constructed of durable, mandrel-bent 304 stainless steel tubing and TIG welding for long, trouble-free life.
Designed for maximum performance, aFe’s exhaust utilizes a high-flowing pipe and muffler layout from the downpipe to minimize restriction. The 3.5” black tips fill out the rear valance and hint at the greater performance within.
3" - 2-1/2" 304 Stainless Steel Construction:
This cat-back exhaust system is constructed of 3" - 2-1/2" mandrel-bent brushed finished 304 stainless steel tubing for maximum strength and durability.
High-Flow 304 Stainless Steel Muffler:
This system features a high-flow 304 stainless steel muffler, producing a powerful sound.
Quad 3-1/2" Diameter Black Exhaust Tips:
Finishing off this exhaust system are quad 3-1/2" diameter black 304 stainless steel clamp-on exhaust tips. The tips features a laser etched aFe POWER logo for a unique style.
Powerful Sound:
This system produces a powerful sound unleashing all available horsepower and torque.
Installation:
Utilizing factory style hangers this system is a direct bolt-on system, which requires no cutting or modifications for a hassle-free installation.
Exhaust Valves:
This cat-back exhaust system incorporates a factory style exhaust valves which use the factory exhaust valve motors (not included). The valves help regulate, direct and control the flow of exhaust gases by opening, closing, or partially obstructing passageways depending on throttle position for maximum performance.
Integrated Mitered Merge Collector:
A mitered merge collector is used to decrease turbulence and increase exhaust velocity resulting in increased horsepower, torque and improved throttle response.
Computer-Aided Design:
Utilizing state-of-the-art computer-aided design technology, this exhaust system is designed for custom, high tolerance factory fitment.
TIG-Welded:
100% TIG-Welded for race-proven strength and durability.
Emissions Disclaimer:
This product does not require a CARB EO#.
Note: This exhaust system is designed to change the tone and increase the volume of the exhaust. Some states or jurisdictions have strict sound regulations that prohibit any changes to the factory exhaust. It is the responsibility of the vehicle owner to ensure his/her vehicle complies with all federal, state, county, or local regulations. Installation of this exhaust will not increase emissions nor cause a check-engine light or fault codes on a properly maintained vehicle. It was developed to work with all factory emissions controls and equipment.
On-car images show carbon fiber tip option, and are intended to depict fitment only. Please see below for versions with polished stainless or carbon fiber tips.
BMW Fitments:
Z Series
G29 Z4 (2019-2025) > Z4 M40i
