2023 BMW M440i xDrive Base Performance Parts

G2X BMW M340i/M440i Rear Exhaust At Active Autowerke, it's not ONLY about making as much power as possible but to maximize the enjoyment of the drive. For 40 years, power has been the end result of improved performance due to our relentless desire to...

G4X BMW M240i Rear Exhaust At Active Autowerke, it's not ONLY about making as much power as possible but to maximize the enjoyment of the drive. For over 40 years, power has been the end result of improved performance due to our relentless desire...

Active Introduces its G2X Brace for larger exhaust systems on your M340i or M440i car. Available January 2025 at an introductory price of $349 and will be included in our G2X M340i/M440i Midpipes. The Active Autowerke G2X Chassis Brace or M340i Brace replaces your...

G2X BMW M340i/M440i Mid-Pipe At Active Autowerke, it's not ONLY about making as much power as possible but to maximize the enjoyment of the drive. For 40 years, power has been the end result of improved performance due to our relentless desire to develop...

Custom built multi-function digital boost gauge and more for the G20, G21, G22, G23, G26, G42, G80, and G82 generation (2019-2024) BMW 2 Series, 3 Series, and 4 Series, including 218i, 220i, M240i, 318i, 320i, 330i, M340i, M3, 420i, 430i, M440i, and M4 models....

Boost tap kit for BMW B48 / B58 engines. Includes approximately 60" of 5/32" O.D. plastic tubing, zip ties, and connector hoses. This kit does not include a gauge or sensor, sold separately.

Upgrade from the stock B58 downpipe to the MAD B58 catted downpipe for maximum airflow, power, and sound! Introducing the Mad Catted B58 Downpipe, the perfect upgrade for BMW enthusiasts looking to enhance their vehicle's performance and exhaust sound. Crafted from premium quality 304...

Upgrade your turbocharged BMW or Toyota Supra with the MAD B58 Gen 2 Charge Pipe, engineered to improve airflow, durability, and throttle response while eliminating the weak factory plastic charge pipe prone to cracking under boost. Designed as a direct OEM replacement, this performance...

Enhance your vehicle's exhaust system with the MAD Valve Controller, the ultimate tool for customizing your exhaust sound and performance. Designed to override factory settings, this controller gives you complete control over your exhaust flap, allowing you to tailor the exhaust note to match...

Upgrade from the stock B58 downpipe to the MAD B58 catless downpipe for maximum airflow, power, and sound! The Mad Catless B58 Downpipe is an essential upgrade for any BMW enthusiast looking to maximize the performance of their B58 engine. Made from high-quality materials,...

The MAD BMW M340 / M440 Axle Back Exhaust System is designed to deliver a bold sound upgrade without unnecessary parts or added cost. Unlike our previous full catback design, this updated version is more cost-effective, easier to install, and focuses only on the...

MAD Valve Controller Essentials Everything You Need. Total Control. No Guesswork. Take full control of your exhaust sound with the MAD Valve Controller Essentials a simplified, plug-and-play solution designed around the valve positions enthusiasts use most every day. Unlike the factory system, which constantly...

Upgrade your stock B58 downpipe to the MAD B58 Catted Downpipe for more power, better sound, and guaranteed reliability without triggering a check engine light. The MAD Catted B58 Downpipe is the ideal performance upgrade for BMW owners who want more out of their...

MAD BMW M340i M440i B58 G20 G22 Front Mount Silicone Intake Unleash the full potential of your B58-powered M340i or M440i with the MAD Front Mount Silicone Intake, designed for maximum airflow, improved turbo response, and an aggressive intake sound. Key Features: Enhanced Airflow...

MAD introduces their G-chassis B58 BMW Turbo Inlet/Resonator Delete Pipe, a product designed to optimize airflow from the intake to the turbo, eliminating restrictions and increasing the inlet diameter for improved power and turbo efficiency. The MAD G-chassis turbo inlet pipe offers a seamless...