

Elevate the rear styling and functionality of your BMW G80 M3, G82 M4, or G83 M4 Convertible with this premium Carbon Fiber Rear Diffuser featuring an integrated rainlight. Designed to add a bold, race-inspired aesthetic, this diffuser also enhances aerodynamic performance while improving visibility in low-light or adverse weather conditions. Crafted from high-quality carbon fiber, it offers exceptional durability and a high-gloss finish that complements the aggressive lines of your BMW.
Key Features:
- Aggressive Design: Adds a bold, dynamic look to the rear of your BMW, enhancing its sporty appeal.
- Premium Carbon Fiber Construction: Lightweight, durable, and resistant to wear, with a sleek high-gloss finish for a refined appearance.
- Integrated Rainlight: Provides added safety and a distinctive visual element, ideal for low-visibility conditions.
- Aerodynamic Benefits: Optimizes airflow and improves rear-end stability for enhanced driving dynamics.
- Precision Fitment: Custom-designed for seamless integration with BMW G80 M3, G82 M4, and G83 M4 Convertible models.
Fitment:
- BMW G80 (M3 Sedan, 2021-Present)
- BMW G82 (M4 Coupe, 2021-Present)
- BMW G83 (M4 Convertible, 2021-Present)
What’s Included:
- 1 x Carbon Fiber Rear Diffuser with Integrated Rainlight
- Necessary installation hardware
- **BMW G80/G81/G82/G83 Carbon Fiber OEM Rear Corners not included unless selected**
Installation Notes:
- Professional installation is recommended to ensure precise alignment, proper wiring, and optimal fitment.
Shipping Information for Performance Parts
We proudly ship parts worldwide! All orders are processed Monday through Friday. Please allow 1-3 business days for order processing before shipment. We do not ship on weekends or public holidays.
Estimated Shipping Times: | |
U.S. & Canada: | 7-10 business days |
International: | 10-30 business days (varies by location and customs processing) |
Larger or Oversized Items: | May take longer due to handling, packaging, and freight requirements |
Shipping times may be affected by product availability, high demand, holidays, or unforeseen circumstances. For order updates, contact us at info@eguysperformance.com or DM us on Instagram @eguysperformance with your order number.
Shipping Rates: | Calculated at checkout based on location and order weight |
Customs & Import Taxes: | International orders may incur fees, duties, and taxes determined by local customs offices. These charges are the buyer’s responsibility. We are not liable for customs delays. |
What Does the E Guys Performance Lifetime Warranty Cover?
Our Lifetime Warranty is designed to give you peace of mind. Here’s what’s included:
Available to the Original Purchaser: | This warranty applies exclusively to the original purchaser of the product. Coverage is valid for purchases made directly from E Guys Performance or through an authorized dealer. |
Manufacturer Defects: | We cover defects in materials or workmanship. If a product fails due to a manufacturing issue, we will repair or replace it at no cost. |
Shipping Costs for Warranty Claims: | We cover shipping costs for replacement parts on approved warranty claims, so you won’t incur additional fees. |
What Isn’t Covered?
Improper Use or Installation: | Damage from incorrect installation, misuse, accidents, or normal wear and tear is not covered. |
Modifications: | Any modifications made to the product will void the warranty. |
Intended Use: | Products must be used as intended for the warranty to remain valid. |