2015-2021 STI

Get that plastic blob of an overflow tank out of your engine bay. Stock plastic tanks are prone to failure due to repeated hot and cold cycles, and...

The Subaru WRX STI provides a great balance of power, handling, and reliability. As with any vehicle, controlling fluid temperatures will ensure co...

The Subaru STI provides a great balance of power, handling, and reliability. As with any vehicle, controlling fluid temperatures will ensure consis...

Free up some engine bay space with the Mishimoto Subaru WRX/STI Plug-N-Play Aluminum Fan Shroud Kit! This kit bolts directly to your stock or Mishi...

These are the ISC Suspension Adjustable Toe Arm Kit. These toe arms have been designed to allow the end-user to fine-tune their suspension settings...

The Cusco Center Floor Power Brace has been designed with multi-point attachments to really strengthen the integrity of your chassis. This will imp...

The Gates water pumps are brand new (not remanufactured)designed to be long lasting and efficient.-The shaft and hub are precisely ground to exactl...

The Mishimoto performance aluminum radiator for the WRX and STI is designed and engineered to maximize cooling efficiency by up to 30%, boost en...

The CSF Racing Radiator is a super-durable all aluminum radiator designed to replace your factory radiator to improve the overall cooling efficien...

Replace your ugly OEM plastic coolant overflow tank with a sleek design PERRIN Performance! A compact design with powdercoated aluminum body adds r...

The Mishimoto racing thermostat will promote greater cooling efficiency throughout your engine. The Mishimoto racing thermostat will significantly ...

The Mishimoto Aluminum Coolant Expansion Tank for your 02-07 Subaru WRX or 04-16 STI. This is a 100% aluminum unit that is TIG-welded, and it i...

The Cusco's Adjustable Rear Trailing Rods have been designed to reduce unwanted force under both acceleration and braking. These trailing arms also...