Compressive Tuning SmartFlow Radiator Shroud - 2015-2021 Subaru STI, 2015-2021 Subaru WRX

Compressive Tuning SmartFlow Radiator Shroud - 2015-2021 Subaru STI, 2015-2021 Subaru WRX

The Compressive Tuning SmartFlow Shroud for the 2015-2021 Subaru WRX and STI is a three-piece modular radiator shroud designed to maximize the volume of fresh air delivered from the grille opening to the intake airbox and radiator.

SmartFlow Radiator Shroud for the 2015-2021 WRX and STI

The Compressive Tuning SmartFlow Shroud for the 2015-2021 Subaru WRX and STI is a three-piece modular radiator shroud designed to maximize the volume of fresh air delivered from the grille opening to the intake airbox and radiator. The modular design allows targeted air direction at specific components rather than a single undifferentiated flow path.

Intake Box Airflow and Thermal Management

On the VA WRX and STI, the factory grille opening delivers air to the intercooler, radiator, and intake airbox simultaneously without dedicated airflow management between them. The SmartFlow shroud channels grille air more efficiently to each component, improving both intake box fresh air delivery and radiator thermal management under varied driving conditions.

Key Features

• Three-piece modular design for targeted air direction
• Optimizes fresh air delivery from grille to intake box
• Enhances thermal management under varied driving conditions
• Durable construction designed for long-term reliability
• Supports both stock and extensively modified engine setups

Fitment Notes

• Fits 2015-2021 Subaru STI
• Fits 2015-2021 Subaru WRX

Straight From Subispeed

A thoughtfully designed airflow management upgrade for the VA WRX and STI. The SmartFlow shroud addresses the factory layout's lack of dedicated airflow routing -- the improvement is most meaningful during track use and spirited driving where thermal management and intake air temperature both affect performance.

About Compressive Tuning

Compressive Tuning is a Colorado-based manufacturer specializing in precision-crafted carbon fiber and CNC aluminum accessories for Subaru performance builds. Every product is developed and manufactured in-house, allowing tight control over fitment accuracy, finish quality, and design consistency. Their catalog covers exterior aero components, engine bay dress-up, and functional aerodynamic upgrades -- all developed specifically for the platforms they support rather than adapted from generic designs.