Great news – on this purchase, you'll enjoy a BuildBUX bonus of $10.21.
Upgrade your Subaru WRX or Subaru STI with the Process West Top Mount Intercooler—engineered to deliver real cooling performance without compromise.
Featuring a massive 490 x 175 x 90mm core, this intercooler provides a significant increase in cooling surface area while maintaining optimal airflow. Unlike oversized cores that restrict air, the 90mm thickness is carefully designed to balance efficiency and performance.
What sets this system apart is the included purpose-built splitter, ensuring 100% airflow coverage across the core. This eliminates the common issue of unused cooling surface found in many aftermarket upgrades.
The result is lower intake air temperatures, improved throttle response, and consistent power—even under demanding driving conditions.
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