1-4 DAYS DELIVERY
2014-2020 BMW F82/F83 M4 DE Style Rear Diffuser
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100% ORIGINAL & HIGH-QUALITY
1-YEAR WARRANTY
Description
Description
Shop premium parts to enhance your vehicle's performance, style, and customization with high-quality upgrades. This LB Style Rear Diffuser gives your BMW M4 F82 or F83 a distinctive, motorsport-inspired rear end with a bold and aerodynamic design.
Crafted from lightweight and durable FRP, CFRP, or FGCF, it delivers a precise fit and aggressive aesthetics while helping channel airflow for improved performance.
Fitment: 2014–2020 BMW M4 F82 / F83
Package Contents: One rear diffuser
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.




