Experience the perfect blend of sound, performance, and style with the MAD Catback Exhaust System for your BMW X3 M40i (G01) and X4 M40i (G02) equipped with the B58 engine.

Elevate Your Driving Experience

Transform your BMW's exhaust note to a deep midrange sound that is both exhilarating and refined. The MAD Catback Exhaust delivers a rasp-free, zero drone, and zero rattle experience, ensuring every drive is as enjoyable as possible.

Key Features

Deep Midrange Sound

Enjoy a rich, full-bodied exhaust tone that enhances your vehicle's sporty character without being overly aggressive.

Rasp-Free Performance

Engineered to eliminate unwanted raspiness, providing a clean and crisp exhaust note throughout the RPM range.

Zero Drone Technology

Designed with precision to prevent cabin drone at cruising speeds, ensuring a comfortable driving experience.

Zero Rattle Construction

High-quality materials and expert craftsmanship eliminate any potential rattles, giving you peace of mind.

Single Y-Midpipe Design

Utilizes a single Y-midpipe for the cleanest sound possible, optimizing exhaust flow and reducing turbulence.

Central Exhaust Layout

The central exhaust configuration enhances acoustics, delivering the best and cleanest sound with absolutely zero drone.

Dual Valve System

Replaces the stock single valve with a dual-valve setup for maximum flexibility:

Valves Closed: Achieve a conservative, subtle sound ideal for daily driving.

Valves Open: Unleash a more aggressive exhaust note for an exhilarating experience.

Consistent 70mm Piping

Features 70mm piping throughout to ensure the most even and balanced sound output.

89mm Tip Outlets

Large 89mm exhaust tips enhance the visual appeal and are available in:

Brushed Stainless Steel

Matte Black

Carbon Fiber

Why Choose the MAD Catback Exhaust?

Enhanced Performance

Improved exhaust flow leads to better engine efficiency and potential horsepower gains.

Customized Sound Control

Switch between a subtle or aggressive exhaust note with the dual-valve system.

Quality Construction

Made from premium 304 stainless steel material for durability and longevity.

Easy Installation

Direct bolt-on replacement requires no cutting or welding.

Aesthetic Upgrade

The stylish exhaust tips provide a sleek, sporty look to your BMW's rear profile.

Compatibility

BMW X3 M40i (G01)

BMW X4 M40i (G02)

Engine: B58 Turbocharged Inline-6

Installation

Direct Bolt-On Fitment

Uses factory mounting points for a seamless installation process.

All Hardware Included

Comes with all necessary clamps, bolts, and gaskets.

Unleash Your BMW's True Potential

Upgrade to the MAD X3/X4 M40 Catback Exhaust System and experience a transformative difference in your vehicle's sound and performance. With its advanced design and premium features, this exhaust system is the ultimate choice for discerning BMW enthusiasts.