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MotoGP God
Bikes: 748S, HM1100S, V4SP, Was: DD-A #111
Posts: 13,086
Join Date: Feb 2002
Location: Back in Essex
Mood: Passion Killer
Have you checked the cost of Pipercross air filters?
For my 748, they're about £18 a pair so not only are they cheaper than the OEM filters, but they perform better and they reusable!
Check the usual replacement filters like Pipercross, K&N, etc.