2007 to 2011 Airbox top removal

Has anyone tried cutting the airbox top out of their 2007-2011 WR450F to allow more airflow? I don’t mean removing the snorkel as per the free mod (i’ve done that already).


As i have a smaller battery fitted, there is lots more room behind the battery, above the airbox inlet and wondered if anyone has removed more of the lid to improve breathing?

4" x 3" is all you need.

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