BMW G01 X3 & G02 X4 M40i B58 Stage 2 Hardware Package

Unlock the full potential of your BMW X3 or X4 M40i with this Stage 2 Hardware Package, engineered for enthusiasts looking to maximise performance and sound from the B58 engine platform. Designed to deliver significant gains in power, responsiveness, and exhaust tone, this package combines premium, proven components for seamless integration and long-term reliability. The kit includes a K&N High-Flow Air Filter (33-3134) for improved intake efficiency, a DCE 5.2″ Catless Downpipe with built-in heat shielding for optimised exhaust flow, and a DCE Resonator Delete Midpipe to enhance exhaust note and reduce backpressure. Together, these upgrades form the ideal foundation for custom tuning and Stage 2 calibrations, allowing your M40i to breathe, spool, and perform at its best. For vehicles equipped with OPF/GPF systems, an OPF Delete Cable and CAN MIL Module are recommended, or professional coding/tuning may be required to remove related fault codes. Key Features Complete Stage 2 Package: Combines intake and exhaust upgrades for noticeable performance gains. Improved Airflow & Efficiency: K&N filter increases intake flow while maintaining excellent filtration. Maximum Exhaust Flow: DCE 5.2” catless downpipe reduces restriction and improves turbo response. Enhanced Sound: DCE midpipe eliminates the resonator for a deeper, more aggressive tone. Precision Fitment: Engineered specifically for the BMW G01 X3 and G02 X4 M40i B58. Tune-Ready Setup: Optimised for Stage 2 ECU calibrations and OPF-delete configurations. Compatibility BMW X3 M40i (G01, 2018–2025) BMW X4 M40i (G02, 2018–2025)For OPF-equipped vehicles, additional hardware or software coding is required.