Perrin Cold Air Intake - Hyper Pink Fits 2018-2021 Subaru STI

For STI enthusiasts running the updated 2018–2021 platform, the Perrin Cold Air Intake brings a perfect balance of increased performance, intoxicating sound, and precision-engineered fitment. This isn’t just another intake—it’s a carefully crafted upgrade that enhances power delivery, reduces heat soak, and sharpens the overall driving experience of the EJ257.

Constructed from high-grade CNC mandrel bent aluminum, Perrin’s intake tubing ensures smooth, uninterrupted airflow. Its diameter is precisely tuned to support proper mass airflow (MAF) sensor readings while eliminating the turbulence and restriction found in the factory airbox. The filter resides deep in the fender well, where it pulls in colder, denser air—significantly improving combustion efficiency under load and at high RPM.

The performance gains are noticeable: better throttle response, faster turbo spool, and a freer-breathing top end. With proper tuning, users typically see gains of 10–15 horsepower, but the real magic is in how the car responds. Turbo whistle becomes clearer, blow-off valve sounds more pronounced, and the overall feedback from the engine is more visceral. It's a driving experience that feels alive.

As with any high-performance intake system, tuning is required to correct the fuel trims and fully realize its power potential. With that dialed in, this intake forms a strong foundation for further power modifications like downpipes, intercoolers, and E85 setups. The powder-coated finish adds durability and a clean engine bay aesthetic, while the bracketry is designed to use factory mounting points for a perfect OEM+ fit.

• CNC mandrel bent aluminum tubing eliminates restriction and turbulence
• Cold air placement in the fender reduces intake temps and improves consistency
• Powder-coated finish resists heat and corrosion
• Enhanced turbo spool sound and blow-off valve acoustics
• Requires tuning to optimize air/fuel ratios and performance
• Built specifically for 2018–2021 EJ257-equipped WRX STI models

Perrin has long been a staple in the Subaru performance world, delivering precision parts that reflect real-world testing and enthusiast input. This intake continues that legacy—engineered not just for dyno gains, but for a better, more engaging drive every time you press the throttle.

CARB NOTE:

This product cannot ship to the state of California as it is not CARB compliant.