Carbon Fiber Rear Bumper Diffuser for 2025 BMW 3 Series G20 Sedan 320i & M340i
Available in stock (20)
Carbon Fiber Rear Diffuser for 2025 BMW 3 Series G20 Sedan
A carbon fiber rear bumper diffuser for the 2025 BMW 3 Series G20 4-door Sedan, listed for the 320i and M340i. It adds a sporty carbon fiber finish to the lower rear bumper. It is made from 3x3 weave carbon fiber with a double-layer UV-protective gloss clear coat and mounts with the included self-tapping screws.
Fitment
- Model: BMW 3 Series G20, 4-door Sedan
- Versions: 320i, M340i
- Years: 2025
- Not for: pre-2025 G20 models (not listed), the G21 Touring, or the G80 M3
2025 model year only. Compare photos of your rear bumper, or confirm by VIN, before ordering.
Specifications
- Material: Carbon fiber, 3x3 weave
- Finish: Double-layer UV-protective clear coat, glossy
- Manufacturing: 3D design, CNC molding, test fitted on a real car
- Position: Lower rear bumper
- Hardware: Self-tapping screws included
Installation
Professional installation is recommended. Mounting with self-tapping screws may require drilling into the bumper.
- Clean the lower rear bumper area.
- Test fit the diffuser and check alignment with the bumper and exhaust tips.
- Mark the screw positions and secure the diffuser with the included self-tapping screws.
Care
- Wash with a pH-neutral car shampoo and a soft microfiber cloth.
- Avoid abrasive polishes and automatic brush car washes.
FAQ
Does it fit a 2019-2022 G20? Not listed. 2025 only.
Does it fit the M3? No. The G80 M3 uses a different rear bumper.
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Stephanie L.
Ordered the BMW front bumper fog light grille and the fitment was absolutely perfect. Gloss black finish looks factory-fresh and the quality is outstanding. Installation took about 30 minutes — no drilling required. Highly recommend AlchemyRide!
Marcus R.
Fast shipping, great packaging, and the part arrived in perfect condition. The grille fits my F23 like a glove — exactly as described. Customer service was also super responsive when I had a fitment question. Will definitely order again.
David K.
I've bought aftermarket parts from many stores but AlchemyRide stands out for quality and value. The part was well-made, fit perfectly, and the price was very competitive. My BMW looks aggressive and clean — exactly what I wanted.
Jenny T.
Excellent product and super easy to install. The gloss black finish matches my M Sport bumpers perfectly. Shipping was faster than expected and the part was well-packaged. Very happy with my purchase — my car looks completely transformed!