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Flapper valve on 2015 800x

3 posts Started 13 Jan 2025 Last recovered post 13 Jan 2025 Wayback Machine snapshot 8 Feb 2025

#1

Super confused reading around regarding the airbox flapper valve on these bikes
 Some say its strictly noise related, some say its there to give better airflow = torque at low revs. I really dont know what to think of it, has anyone blocked it off on the new (8th gen) 800F or 800x and come to a conclusion that its worthwhile? Im not sure if i wanna give it a go just for science haha... 

#2
16 minutes ago, Sunde

Super confused reading around regarding the airbox flapper valve on these bikes
 Some say its strictly noise related, some say its there to give better airflow = torque at low revs. I really dont know what to think of it, has anyone blocked it off on the new (8th gen) 800F or 800x and come to a conclusion that its worthwhile? Im not sure if i wanna give it a go just for science haha... 

This might answer your questions.

#3

Thank you so much for that link, sorry i failed to find it before making a new post!
 Is it 100% confirmed that honda removed the flapper system entirely from 2017 onwards? If thats the case i find it really really hard to justify not doing what you'v done... Except i plan on just taping off the valve and putting the hose back on, should eliminate its function right? 

End of thread · 3 posts recovered Wayback Machine snapshot 8 Feb 2025