GReddy Aero Rear Under Diffuser

2013–2020 Subaru BRZ / 2017–2020 Toyota 86

17010233

Overview:

The GReddy Version 2 Aero Rear Under Diffuser is a precision-engineered aerodynamic component designed specifically for the Subaru BRZ (2013–2020) and Toyota 86 (2017–2020). This rear diffuser enhances the vehicle’s rear-end airflow management, reducing turbulence and drag while improving overall stability at higher speeds. Ideal for enthusiasts seeking both functional aerodynamic improvements and a more aggressive rear appearance, the diffuser integrates seamlessly with the factory rear bumper for a clean, factory-inspired look.

Developed in collaboration with Rocket Bunny, this Version 2 diffuser builds upon the original design with refined contours and enhanced aerodynamic efficiency. It is perfect for drivers who want to elevate their car’s performance and style without compromising daily drivability.

Key Features:

The GReddy Version 2 Aero Rear Under Diffuser offers a range of benefits that make it a standout upgrade for BRZ and 86 owners:

• Optimized aerodynamic design reduces rear-end lift and drag for improved high-speed stability
• Version 2 design features refined styling and enhanced airflow management compared to the original model
• Constructed to fit perfectly with the factory rear bumper, ensuring a seamless and integrated appearance
• Durable construction suitable for both street and track use
• Enhances the aggressive stance and visual appeal of the vehicle’s rear profile
• Lightweight design minimizes added weight while maximizing aerodynamic benefits
• Compatible with both Subaru BRZ models from 2013 to 2020 and Toyota 86 models from 2017 to 2020
• Developed in partnership with Rocket Bunny for authentic aero styling

Construction & Design:

The diffuser is crafted from high-quality materials engineered for strength and durability while maintaining a lightweight profile. GReddy’s attention to detail ensures that the diffuser’s contours precisely match the rear bumper’s shape, allowing for a factory-like fitment without gaps or misalignment. The aerodynamic surfaces are sculpted to channel airflow smoothly beneath the vehicle, reducing turbulence and drag that can negatively impact handling and fuel efficiency.

Its robust construction withstands the rigors of spirited driving and track conditions, while the finish is designed to resist road debris and environmental wear. The Version 2 diffuser’s design improvements over the original model include sharper edges and enhanced venting to further optimize airflow and downforce.

Installation & Fitment:

Installation of the GReddy Version 2 Aero Rear Under Diffuser is straightforward for those familiar with aftermarket body components. It is designed as a direct bolt-on upgrade for the specified Subaru BRZ and Toyota 86 model years, requiring no major modifications to the factory bumper or chassis. Mounting hardware and detailed instructions are typically included to facilitate a secure and precise fit.

While professional installation is recommended to ensure optimal alignment and finish, experienced enthusiasts with basic tools can complete the installation in a reasonable timeframe. The diffuser’s design maintains full compatibility with stock exhaust setups and rear sensors.

What’s Included

• GReddy Version 2 Aero Rear Under Diffuser panel
• Mounting hardware and brackets
• Installation instructions

Ideal For:

This rear under diffuser is ideal for Subaru BRZ and Toyota 86 owners who want to improve their vehicle’s aerodynamic performance and rear-end styling. It suits enthusiasts who participate in track days, autocross, or spirited street driving and desire a functional upgrade that also enhances the car’s aggressive appearance. Additionally, it appeals to owners looking for a high-quality, OEM-style aerodynamic component developed by a reputable brand in collaboration with Rocket Bunny.

GReddy is a Japanese automotive aftermarket company specializing in performance tuning parts, including exhaust systems, turbo kits, cooling systems, and electronic components for both Japanese and American vehicles. Their products are designed to enhance vehicle performance, targeting builds that require reliable upgrades to improve power, throttle response, and exhaust sound. Enthusiasts choose GReddy for their engineered solutions that balance performance and reliability, suitable for both daily drivers and dedicated race cars.