MAD BMW G Chassis GEN 1 B58 Inlet For 540i and X-series

The MAD G-Chassis Gen 1 B58 Turbo Inlet (Resonator Delete) optimises airflow from the intake to the turbo, eliminating the factory restriction and widening the inlet diameter for better power and turbo efficiency. It's a seamless replacement for the OEM unit on 540i and X-series B58 cars.

The plastic OEM inlet is prone to pressure cracks and includes a flow-hindering resonator on smaller-diameter piping. The MAD aluminum inlet runs a wider diameter and deletes the resonator for smoother, more direct airflow — plus an enhanced induction sound.

Features

• Anodized black finish with an understated, OEM appearance.
• Boosts turbo airflow and engine responsiveness.
• Durable aluminum construction that outlasts the stock plastic inlet.
• Removes the factory sound resonator for a better induction note.

Fitment (G/X-chassis B58 only)

• 5 Series: 2017+ G30/G32 540i / 540iX
• 7 Series: 2016+ G11/G12 740i / 740iX
• 8 Series: 2019+ G14/G15/G16 840i / 840iX / Gran Coupe
• X3 (G01) 2018–2021, X4 (G02) 2019–2021, X5 (G05) 2019+, X6 (G06) 2019+, X7 (G07) 2019+

Important: confirm your factory inlet has a vent hose before purchasing. Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.