APR Performance Carbon Fiber Rear Diffuser – Porsche 991.1 GT3

Add functional downforce and race-inspired styling to your Porsche 911 GT3 (991.1) with the APR Performance Carbon Fiber Rear Diffuser. Engineered to improve high-speed stability, this rear diffuser is crafted from aerospace-grade pre-preg carbon fibre and autoclave-cured for maximum strength and minimal weight.

Designed specifically for the 991.1 GT3 chassis, this diffuser works in harmony with the underbody airflow to smooth the transition of high-speed air exiting from beneath the car. The result: reduced drag, increased rear-end stability, and enhanced aerodynamic balance — especially when paired with a rear wing.

Key Features:
• Pre-preg carbon fibre construction
• Autoclave-formed for superior strength-to-weight ratio
• UV-stable gloss clear coat for long-term durability
• Improves rear-end downforce and aerodynamic balance
• Direct fit for Porsche 911 GT3 (991.1) – no modification required
• Note: Not compatible with 991.2 models

Why Upgrade to the APR Rear Diffuser?
• Reduces rear-end lift for high-speed confidence
• Enhances the effectiveness of rear wings and other aero upgrades
• Built for motorsport performance and long-term street durability
• Precision fitment using OEM mounting points

Vehicle Compatibility:
• Porsche 911 GT3 (991.1)