
Original: $1,730.95
-70%$1,730.95
$519.28The Story
Aggressive Styling and Aerodynamic Enhancement with Lightweight Carbon Fiber
Upgrade the rear profile and aerodynamic performance of your BMW 4 Series Gran Coupe G26 with the TRE Pre-Preg Carbon Fiber Rear Diffuser Set. Designed for a bold, motorsport-inspired look, this diffuser optimizes airflow, improves downforce, and adds an aggressive aesthetic to the rear profile. Crafted from premium pre-preg carbon fiber, it ensures lightweight strength, precision fitment, and a flawless high-gloss finish.
Key Features
Premium Pre-Preg Carbon Fiber Construction
Made from 2x2 twill weave pre-preg carbon fiber for superior strength, reduced weight, and long-lasting durability.
Aerodynamic Enhancement
Optimizes rear airflow, reduces drag, and improves downforce for enhanced high-speed stability and cornering performance.
Aggressive Styling
Adds a bold, race-inspired aesthetic to the rear profile, enhancing the vehicle’s sporty and dynamic appearance.
OEM-Like Fitment
Precision CAD-engineered for a seamless, factory-like fit with no major modifications required.
UV-Resistant Gloss Finish
Coated with a high-gloss, UV-resistant clear coat to protect against fading, yellowing, and discoloration over time.
Compatibility
- BMW 4 Series Gran Coupe G26 (2021+)
Installation
- Direct bolt-on installation using factory mounting points.
- No major modifications required.
- Professional installation is recommended for optimal fitment and alignment.
What’s Included?
- 1 x TRE Pre-Preg Carbon Fiber Rear Diffuser Set
- Mounting hardware (if applicable)
Why Choose TRE Carbon Fiber?
- Crafted with industry-leading pre-preg carbon fiber for strength, durability, and lightweight performance.
- Precision-engineered for an OEM-like fit and seamless integration.
- Enhances rear-end styling while improving aerodynamic performance.
- Backed by a two-year manufacturer’s warranty for peace of mind.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Aggressive Styling and Aerodynamic Enhancement with Lightweight Carbon Fiber
Upgrade the rear profile and aerodynamic performance of your BMW 4 Series Gran Coupe G26 with the TRE Pre-Preg Carbon Fiber Rear Diffuser Set. Designed for a bold, motorsport-inspired look, this diffuser optimizes airflow, improves downforce, and adds an aggressive aesthetic to the rear profile. Crafted from premium pre-preg carbon fiber, it ensures lightweight strength, precision fitment, and a flawless high-gloss finish.
Key Features
Premium Pre-Preg Carbon Fiber Construction
Made from 2x2 twill weave pre-preg carbon fiber for superior strength, reduced weight, and long-lasting durability.
Aerodynamic Enhancement
Optimizes rear airflow, reduces drag, and improves downforce for enhanced high-speed stability and cornering performance.
Aggressive Styling
Adds a bold, race-inspired aesthetic to the rear profile, enhancing the vehicle’s sporty and dynamic appearance.
OEM-Like Fitment
Precision CAD-engineered for a seamless, factory-like fit with no major modifications required.
UV-Resistant Gloss Finish
Coated with a high-gloss, UV-resistant clear coat to protect against fading, yellowing, and discoloration over time.
Compatibility
- BMW 4 Series Gran Coupe G26 (2021+)
Installation
- Direct bolt-on installation using factory mounting points.
- No major modifications required.
- Professional installation is recommended for optimal fitment and alignment.
What’s Included?
- 1 x TRE Pre-Preg Carbon Fiber Rear Diffuser Set
- Mounting hardware (if applicable)
Why Choose TRE Carbon Fiber?
- Crafted with industry-leading pre-preg carbon fiber for strength, durability, and lightweight performance.
- Precision-engineered for an OEM-like fit and seamless integration.
- Enhances rear-end styling while improving aerodynamic performance.
- Backed by a two-year manufacturer’s warranty for peace of mind.






