2021 BMW M340i Base Performance Parts

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...

Introducing the MAD BMW M340 M440 High Flow Air Intake W/ Heat Shield - a groundbreaking system designed specifically to elevate your BMW M340 M440 to new performance heights. Precision-engineered, this intake system harmoniously blends enhanced functionality with an added touch of elegance to...

Cutting-edge motorsports technology for more performance on the road. Like every suspension product developed by KW automotive, the suspension manufacturer, and manufactured in Germany, the KW V3 Coilover suspension kit also provides a significant plus in safety reserves in road traffic. Thanks to the...

The SPL BMW G2X Front Lower Control Arms (FLCA) provide roll center, camber, and track width adjustment for the G2X BMWs (M340i, M440i, etc) while eliminating bushing deflection resulting in sharpened steering response and driving precision.The ability to run more negative camber and a...

The Injen Technology engineers spent abundant amounts of time designing, testing, and perfecting this performance Cold Air Intake system to develop some serious bolt-on power. The soul of this Cold Air Intake system is with our smooth, mandrel-bent, over-sized 4.00" O.D. T6-6061 aluminum tube...

Brembo OE 20-23 BMW M340i/19-23 Z4/20-24 Toyota GR Supra PRIME Ceramic Brake Pad - RearThis Part Fits: Year Make Model Submodel 2022-2023 BMW 230i Base 2023 BMW 230i xDrive Base 2021-2023 BMW 330e Base 2021-2023 BMW 330e xDrive Base 2019-2023 BMW 330i Base 2019-2023...

The stock eccentric bolts provided by BMW and Toyota for small toe and camber adjustments tend to slip under high cornering loads, causing changes to the rear alignment. Our SPL Parts Eccentric Lockout (EL) kit eliminate the stock eccentric bolts to keep your rear...

Bilstein B4 OE Replacement dampers are specifically engineered to be the best choice for maintaining the original ride quality of your vehicle, while meeting or exceeding OE standards. These dampers are the ideal choice for the driver looking to restore the original performance and...

Bilstein EVO T2 Series coilovers are the next step in the evolution of performance suspension tuning. EVO T2 is a coilover kit built and tuned specifically for everyday street use and occasional track duty. Featuring ride height adjustability and manually adjustable performance dampers. The...