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The factory intake does its job, but it has a drawback. The factory airbox to turbo inlet tube is restrictive, and doesn't let Focus RS owners bring out the best of their engine. This is where ETS comes in to save the day. This kit replaces the factory inlet tube and converts the filter from 2.5" to 3.0" for even better flow.
PLEASE NOTE
All engine modification components, except those that are exempt, have been designed specifically for off-highway application. Check your state and local laws before purchase.