15-21 WRX Max Cooling Bundle

Turn Up the Power. Keep Temps in Check.

The 2015–2021 WRX FA20 DIT platform offers great performance potential—but with higher boost and track days comes higher heat. The GrimmSpeed Max Cooling Bundle is your all-in-one cooling solution, pairing our Black Top Mount Intercooler Kit with the CSF 31mm High-Performance Aluminum Radiator.

When intake and coolant temps rise, so does the risk of lost power and long-term damage. This combo takes care of both sides: GrimmSpeed’s TMIC crushes heat soak, and CSF’s 31mm radiator keeps your coolant system flowing strong under load. It’s a must-have cooling setup for any WRX owner who’s serious about performance. Whether you’re chasing peak performance or long-haul reliability, this setup gives your WRX the thermal stability it needs to thrive.

What’s Included

 GrimmSpeed Black Top Mount Intercooler Kit – 2015–2021 WRX

• High-efficiency bar-and-plate core sized for FA20 performance

• Cast aluminum end tanks with smooth, CFD-optimized flow paths

• Wrinkle black powder-coated finish for stealth and durability

• Bolt-on Y-pipe, BPV flange, gaskets, and full hardware included

• Direct-fit install with factory or most aftermarket charge piping

 CSF 31mm High-Performance Aluminum Radiator

• 1-row, 31mm B-Tube core for high thermal efficiency

• All-aluminum, TIG-welded deep-drawn end tanks

• CAB furnace brazed using military-grade aluminum (JIS 3003 minimum)

• Wind tunnel, thermal cycle, vibration, and salt spray tested

• CNC-machined fittings and race-style drain plug

• 30-point inspection for direct OEM fit with no modifications required