Sport Rider Photos
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These cutaway CAD illustrations show how the adjustable intake trumpets are moved into two positions by an ECU-controlled motor according to rpm. Note that the paper air filter is set up vertically instead of laying flat like most airbox installations; BMW feels that forcing the airflow to change directions is detrimental to airbox pressure and power production. Air enters straight through the hollow steering head.
BMW S 1000 RR Intake CAD Illustration