Direct fit for the 2015-2021 Subaru WRX, Constructed from four layers of silicone with heat-resistant embedded fibers, Improved heat and pressure tolerance compared to the stock rubber components, Includes both upper and lower airbox hoses, Smooth internal surface provides uninterrupted airflow, Wire-reinforced to prevent collapsing under pressure, Available in black, blue, or red, Mishimoto Lifetime Warranty