Ballade Sports Velocity Stack S2000 Intake Air Filter - are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16" (1.5mm) to fit in-between sizes. Mated with an Intake Velocity Stack is designed to optimize and maximize the entry of air flow entering the vehicle's induction system. The low velocity air flow taken through the air filter is turned into a smooth and high velocity intake charge. This is an upgrade and DIRECT FIT replacement for the OEM S2000 air filter unit. NO MODIFICATION to the OEM air box is required for fitment and increased air flow.