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Upgrade your Subaru WRX or Subaru STI with the Process West Top Mount Intercooler—engineered to deliver maximum cooling efficiency without compromise.
Featuring a massive 490 x 175 x 90mm core, this is one of the largest top mount intercoolers available for the GC8 platform. The 90mm core thickness is carefully optimized to balance airflow and cooling performance, avoiding the restriction issues found in overly thick designs.
A key advantage is the included purpose-built bonnet splitter, designed to ensure 100% airflow coverage across the entire core. This eliminates the common issue of wasted cooling surface area seen with factory ducting.
The result is lower intake air temperatures, improved throttle response, and more consistent power, even under demanding driving conditions.
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