Description

Complete the aerodynamic management along the sides of your WRX S4 and enhance rear-end stability with the STI rear side under spoiler. This component works in concert with the front and side STI spoilers. It guides airflow cleanly to the rear of the vehicle and manages critical turbulence.

Product Highlights

• Directed Airflow & Turbulence Control: This spoiler serves a dual aerodynamic function: it helps guide the airflow from the front all the way to the rear of the vehicle, and regulates the turbulence generated around the rear bumper. Together, these actions contribute to the overall stability of the vehicle, especially at higher speeds.

• Final Link in the STI Side Aero Chain: It acts as the terminating element for the airflow managed by the STI front and side under spoilers, ensuring a smooth aerodynamic transition along the entire length of the vehicle’s lower body as part of the complete system.

• System-Matched Color Options: Available in the same Crystal Black Silica (stealth) or Cherry Red (bold) finishes as the rest of the STI under spoiler kit, ensuring a perfectly color-coordinated and intentional performance aesthetic.

Technical Specifications & Critical Warnings

• Product Name: STI Rear Side Under Spoiler for Subaru WRX S4

• Key Benefits: Rear Bumper Turbulence Control, Integrated STI System Airflow, Stability Contribution

• Material & Finish: Resin, painted in Crystal Black Silica or Cherry Red.

• Warranty: Covered by the SUBARU genuine warranty.

⚠️ Critical Compatibility & Usage Warnings:

• Exclusive Installation: Cannot be installed with the Rear Bumper Skirt or Aero Splash parts. It is incompatible with those aesthetic/protective pieces and is designed solely for the functional STI aero system.

• Major Ground Clearance Reduction: Lowers ground clearance by approximately 30mm. This is a significant drop that will severely impact daily drivability. Extreme caution is required on any incline, speed bump, or uneven road, and scraping is highly probable in normal conditions.