G2x M340i/M440i

BMW G20/G21/G22/G23 M340i and M440i performance parts. Downpipes, intakes and suspension upgrades tailored to the B58 platform.

Shop Related Upgrades

Downpipes | Intercoolers | Charge Pipes | Springs | ECU Tuning

FAQs
Is the B58 engine safe to tune?

Yes — the B58 is extremely strong and responds well to tuning.

Does the M340i/M440i need a downpipe upgrade?

Downpipes unlock more sound and power, especially when paired with a tune.

What suspension upgrades help most?

Springs and anti-roll bars reduce body roll and improve balance.

13 products