K&N Performance Intake Kit for Ford C-Max/Focus II / Volvo C30/S40/V40/V50/V70 / Mazda 3/5 Exterior Styling>Hood Struts Injen is proud to say

Injen is proud to say that the EVO1501 Evolution Cold Air Intake system is the very best intake system for your Civic Si that money can buy

000 HP where space is at a premium

Enabling us to produce the finest exhaust components in today's marketplace

View the AEM-21-791C vehicle applications to determine the legal status for each vehicle

K&N Performance Intake Kit for Ford C-Max/Focus II / Volvo C30/S40/V40/V50/V70 / Mazda 3/5 Exterior Styling>Hood Struts Injen is proud to sayThe K&N 57S 4000 Performance Airbox replaces the restrictive factory air filter and air box lid. K&N performance air boxes are designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57S 4000 Performance Airbox comes with an