Coming soon promotional graphic for side skirts
Coming soon promotional graphic for side skirts
Coming soon promotional graphic for side skirts
Coming soon promotional graphic for side skirts
PLUS 9 MOTORSPORTS

2019–Present BMW G20 M340i Rear Bumper Lower Diffuser

Gloss Black Rear Detail
Built for the G20 M340i

The M340i already has a stronger rear-end character than a standard G20, and the lower diffuser area is where that performance look comes together. This Rear Bumper Lower Diffuser adds a clean gloss black finish to the 2019–Present BMW G20 M340i, giving the rear bumper a sharper and more defined appearance.

Designed to follow the factory M340i rear bumper layout, this diffuser adds stronger lower-body contrast while keeping the overall look refined, balanced, and OEM+. It is a clean upgrade for M340i owners who want a more complete rear profile without making the car look overdone.

$149.99

Processing time: 1-2 business days

Return within 30 days of purchase. Duties & taxes are non-refundable.

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Style｜Quality｜and Performance

Built for Your Ride

Welcome to PLUS 9 MOTORSPORTS.
We specialize in premium exterior upgrades and performance-inspired accessories for drivers who value style, quality, and individuality.

From American muscle cars and performance platforms to trucks and daily drivers, we believe every vehicle deserves to reflect its owner’s personality.


We continuously source products that combine design, quality, and function—making upgrades easier, cleaner, and more rewarding.

Frequently Asked Questions?

Will these exterior upgrades perfectly fit my specific vehicle model？

What materials are used for these premium performance components？

What should I do if my items arrive damaged during shipping?

How long will it take to process and ship my order?

 Can you cancel my order?

  • M Performance style diffuser design for a sharper M340i rear profile
  • Built for 2019–Present BMW G20 M340i and M340i xDrive models
  • Gloss black finish adds clean contrast to the lower rear bumper
  • Designed to follow the factory M340i rear bumper layout
  • ABS plastic construction designed for exterior use
  • Direct clip-on design with no drilling or permanent modification required

This rear bumper lower diffuser is made from ABS plastic and finished in Glossy Black

Vehicle Body Style Year Compatibility
BMW G20 M340i Sedan 2019–Present Compatible
BMW G20 M340i xDrive Sedan 2019–Present Compatible
BMW G20 3-Series non-M340i models Sedan 2019–Present Not Compatible
  • Test fit the diffuser before final installation to confirm alignment with the factory rear bumper.
  • Reuse OEM hardware where applicable for secure mounting.
  • Professional installation is recommended for best fitment and finish.
  • Rear bumper lower diffuser

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Built for G20 M340i owners who want a cleaner and more defined rear-end finish. This gloss black diffuser gives your BMW a sharper OEM+ rear profile with subtle street-performance presence.