Injen Supernano-Web Air Filter 3.5in ID (X-1021-BB) SPL this enables a tuner to

this enables a tuner to cut mapped wastegate duty cycles in half

The improved chassis rigidity enhances steering precision under high load conditions and reduces understeer

Gates standard replacement accessory serpentine belt fits 2008-2014 Subaru WRX and 2008-2020 STi models

• The top hose will NOT fit the STM Billet Aluminum or any Evo 4/5/6 Radiator

the PERRIN header will alter the tone of your exhaust

Injen Supernano-Web Air Filter 3.5in ID (X-1021-BB) SPL this enables a tuner toThis Injen Supernano Web blue air filter is the replacement filter for the Evo X, BRZ and Focus RS Injen intake kits and can also be used in various universal custom applications. Purchase Includes: (1) Filter Confirmed Fitment: Replacement filter for Injen Evo X, BRZ & Focus RS Kits: SP1899BLK SP1899P PT0013B SP1230P SP1230WB SP9003SE SP9003WR SP9003WB Compatible Hydroshields: 1037BLK or 1037RED Flange Inside Diameter: 3. 50" Flange Height: 1. 75"