Carbon Fiber Subaru WRX/ STI Side Rocker Extensions 2015-2021

The Carbon Fiber Subaru WRX/STI Side Rocker Extensions (2015 – 2021) by APR Performance are engineered to enhance aerodynamic balance and high-speed stability.

At high speeds, air rolling beneath the vehicle can cause lift and instability. The APR Side Rocker Extensions channel airflow cleanly along the sides of the car, reducing turbulence and preventing lift, which increases traction and cornering confidence.

Each set is built from pre-preg carbon fiber, autoclave-cured under high temperature and pressure to achieve superior rigidity with minimal weight. A UV-protected clear coat preserves the deep carbon weave and gloss finish, while the vehicle-specific design guarantees perfect OEM fitment for all 2015–2021 WRX and STI models.

Key Features

• Pre-Preg Carbon Fiber Construction – Autoclave-cured for extreme strength and low weight.
• Aerodynamic Performance – Reduces side lift and stabilizes airflow for improved traction.
• Vehicle-Specific Fitment – Engineered precisely for 2015–2021 Subaru WRX and STI.
• UV-Resistant Gloss Finish – Protects against fading while maintaining a deep carbon weave.
• Complete Hardware Kit – Includes screws, nuts, and washers for a secure installation.
• Race-Inspired Design – Functional upgrade that complements performance styling.

Specifications

• Material: Pre-Preg Carbon Fiber
• Finish: UV-Protected Gloss Clear Coat
• Construction: Autoclave-formed composite
• Includes: Left & Right Side Rocker Extensions + Mounting Hardware
• Installation: Direct bolt-on using included hardware
• Brand: APR Performance
• Category: Aerodynamics / Bodyline

Fitment

• Subaru WRX (2015 – 2021)
• Subaru WRX STI (2015 – 2021)