1-4 DAYS DELIVERY
BMW G20 M340i M Performance Style Gloss Black Rear Bumper Lower Diffuser 2019-2026
Couldn't load pickup availability
100% ORIGINAL & HIGH-QUALITY
1-YEAR WARRANTY
Description
Description
Enhance the rear styling and aerodynamic performance of your BMW G20 M340i with this M Performance Style Gloss Black Rear Bumper Lower Diffuser. Designed for 2019-2026 BMW G20 3 Series M340i models, this upgrade transforms the rear profile while maintaining a clean OEM-style fit.
The M Performance-inspired design improves airflow at the rear of the vehicle, helping increase stability and reduce turbulence at higher speeds. Engineered specifically for the G20 M340i platform, this diffuser integrates seamlessly with the factory rear bumper for a precise and factory-like installation.
Constructed from durable ABS plastic, this rear diffuser offers lightweight strength and long-term durability. The gloss black painted finish provides a premium high-shine look that complements factory trim and resists fading, chipping, and everyday wear.
Product Specifications
| Vehicle | BMW 3 Series M340i |
| Chassis | G20 |
| Model Years | 2019-2026 |
| Product Type | Rear Bumper Lower Diffuser |
| Style | M Performance Style |
| Material | ABS Plastic |
| Finish | Gloss Black |
| Installation Type | Direct Clip-On Using Factory Mounting Points |
| Mounting | Factory Rear Bumper Mounting Points |
| Hardware | OEM Hardware Reused During Installation |
| Modification Required | No Drilling or Cutting Required |
| Compatible Models | BMW G20 M340i / M340i xDrive Sedan |
| Placement | Rear Lower Bumper |
| Design Purpose | Rear Diffuser Upgrade, M Performance Style Rear-End Styling, Gloss Black Exterior Accent, Rear Airflow Management, Sportier Rear Profile, and OEM+ M340i Appearance |
Key Features
- Designed for 2019-2026 BMW G20 M340i models
- M Performance Style rear bumper lower diffuser
- Enhances rear-end aerodynamics and airflow management
- Improves stability and performance appearance at higher speeds
- Durable ABS plastic construction for long-term use
- Gloss black finish for a premium OEM+ appearance
- Precision-molded to match factory rear bumper lines
- Direct clip-on installation with no drilling required
- Uses OEM mounting points for secure fitment
- Creates a more aggressive and sporty rear profile
- Ideal for daily driving, show builds, and performance styling
Configuration Options
- Gloss Black Finish: High-shine painted finish for a clean and aggressive look
- Standard Configuration: M Performance style gloss black rear bumper lower diffuser
- Installation Setup: Direct clip-on installation using factory mounting points and reused OEM hardware
- Vehicle Setup: Designed for compatible BMW G20 M340i and M340i xDrive sedan models
Package Includes
- Rear bumper lower diffuser
Note: Designed specifically for M340i models. OEM hardware is reused during installation. Confirm vehicle year, chassis, trim, rear bumper configuration, exhaust layout, and mounting points before ordering and installation. Professional installation is recommended for best alignment and fitment. Test fitting is recommended before final installation.
Installation
- Direct clip-on installation
- Uses factory mounting points
- No drilling required
- No cutting required
- OEM hardware reused during installation
- Professional installation is recommended for proper alignment and secure fitment
- Test fitting is recommended before final installation
Fitment
- 2019-2026 BMW M340i Sedan
- 2019-2026 BMW M340i xDrive Sedan
- Fits compatible BMW G20 3 Series M340i models
Shipping Policy
Shipping Policy
United States: Free shipping available to the lower 48 states across all items. Other states will incur a shipping charge.
Worldwide: Free shipping is available for Complete Headlights, Taillights, DRLs. For custom headlight retrofits, carbon fiber products, and performance products, there will be a shipping charge.
Please note:
• For Retrofits, you are purchasing a headlight modification service.
• If you select "Shipping own headlights to BayOptiks for modification", you are required to send us your headlights.
• If you choose "Purchase new OEM headlights", we will order and modify a new OEM headlight for you.
• Once your customizations are complete, we will ship it to you!
Turnaround Time
Turnaround Time
- Complete Headlights: 3-5 business days for order processing plus shipping time.
- Custom & Pre-Built Headlights: 6-8 weeks depending on the complexity and component availability.
- New OEM and cores: 6-8 weeks plus an additional 4-8 weeks as these are special orders base on the vehicle VIN due to different versions (North American, European, etc.)
- DRLs, Taillights, Brake Pads, and Carbon Fiber Aero: 3-5 business days for order processing, plus shipping time.
- Lens Replacements: 1-3 weeks plus shipping time.
Please note, we do not have control over the time frames of our vendors, manufacturers, and delivery services as they may delay processes in regards to components and shipment.

















