Description
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Enhance the rear-end styling of your Audi A3 S Line or S3 Sportback with the GCA Performance Carbon Fiber Rear Diffuser. Designed specifically for the 2017–2020 Audi 8V.5 hatchback platform, this premium aerodynamic upgrade adds a more aggressive, performance-inspired appearance while maintaining a clean OEM-plus look.
Engineered to complement the sporty lines of the A3 and S3 Sportback, this rear diffuser transforms the factory rear bumper with a bold design that creates greater visual depth and a more purposeful stance. The aggressive styling is paired with functional aerodynamic principles that help improve airflow management at the rear of the vehicle.
Constructed from genuine carbon fiber using a premium 2x2 weave pattern, this diffuser offers exceptional strength while remaining lightweight. A high-gloss UV-resistant clear coat protects the carbon fiber finish from fading and environmental exposure, ensuring long-lasting durability and a premium appearance.
Developed after extensive fitment testing and supplier evaluation, the GCA Performance Carbon Fiber Rear Diffuser delivers exceptional quality, precise fitment, and substantial savings compared to expensive OEM and aftermarket alternatives.
Features & Benefits
- Designed specifically for 2017–2020 Audi A3 S Line and Audi S3 Sportback models
- Aggressive rear diffuser styling
- Enhances rear-end appearance and road presence
- Improves aerodynamic aesthetics
- OEM-inspired fit and finish
- Manufactured from genuine carbon fiber
- Lightweight yet durable construction
- Premium 2x2 carbon fiber weave pattern
- High-gloss UV-resistant clear coat finish
- Quad exhaust outlet configuration
- Complements factory and aftermarket exhaust systems
- Includes mounting hardware and 3M tape
- Developed for precise fitment and long-term durability
Specifications
- Vehicle Fitment: 2017–2020 Audi A3 S Line / Audi S3 Sportback
- Chassis: 8V.5
- Body Style: Hatchback / Wagon
- Material: Real Carbon Fiber
- Weave Pattern: 2x2 Carbon Fiber Weave
- Finish: High-Gloss UV-Protected Clear Coat
- Exhaust Configuration: Quad Exhaust Cut-Out
- Installation Method: Bolts and 3M Automotive Tape
- Hardware Included: Yes
What's Included
- GCA Performance Carbon Fiber Rear Diffuser
- Mounting Hardware
- Automotive-Grade 3M Tape
- Installation Components
Fitment Notes
- Fits 2017–2020 Audi A3 S Line models
- Fits 2017–2020 Audi S3 Sportback / Wagon models
- Fits 8V.5 hatchback platform vehicles only
- Does NOT fit Audi A3 Non S Line models
- Quad exhaust cut-out configuration only
- Professional installation recommended
- Minor adjustments may be required for optimal fitment
Why Upgrade Your Audi A3/S3 Rear Diffuser?
A carbon fiber rear diffuser is one of the most effective ways to improve the appearance of your Audi's rear profile. The GCA Performance Carbon Fiber Rear Diffuser adds an aggressive motorsport-inspired look while maintaining factory-style refinement. With genuine carbon fiber construction, premium UV-resistant finishing, and a quad-exit design, this diffuser delivers the perfect combination of performance styling, durability, and value for Audi 8V.5 Sportback enthusiasts.
