The MST Performance Induction Kit (MST-BW-X301) is designed to optimise airflow, turbo efficiency and induction sound for the pre-LCI BMW G01 X3 M40i and G02 X4 M40i. This high-performance intake system replaces the restrictive factory airbox with a free-flowing, precision-engineered setup that enhances both throttle response and noise.
This kit includes a high-flow performance air filter, a heat-shielded airbox, and smooth aluminium pipework for reduced turbulence and improved airflow. Expect a deeper, more pronounced turbo sound under acceleration and improved engine responsiveness across the rev range. It’s a direct bolt-on solution that retains all OEM mounting points and sensors for a seamless install.
Key Features
Increased airflow and reduced turbo lag
High-flow performance air filter
CNC-machined sensor housing for OEM compatibility
Powder-coated heat shield to protect from engine bay heat
Improved turbo spool and induction sound
Direct-fit design with no cutting or permanent modifications
All required hardware included
Compatibility
BMW G01 X3 M40i (B58 engine – 2018–2022)
BMW G02 X4 M40i (B58 engine – 2018–2022)
Not compatible with post-2022 models using the updated B58TU2 engine.
