RC51 Forums banner

flapper mod

2K views 5 replies 4 participants last post by  redbull 
#1 ·
the flapper mod took me 30 seconds to do.
 
#5 ·
The flapper valve is an intake noise control device.
It blocks off halve of the air intake between 5-7K RPM.
It also causes a dip in the power band between that RPM range.
By disabling the flapper valve, you not only get a better power spread, but reduce the bike's weight when all that junk is removed.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top