What's this lump inside the airbox?

Started by Mr Earl, March 26, 2010, 01:53:46 PM

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Mr Earl

About to finally chop the airbox on my 2003 M800 and as I engineer a hole pattern I'm noticing this box inside the lid, right below the original air intake snorkel.  There's a tunnel into this box from the snorkel.  What's it do/for?
Leo Vince CF slip-ons, '01 SS900 fully adjustable Showa forks w/ST2 springs, rebuilt S4 shock w/Ohlins spring, 748 dog bone, Swatt clip-ons above the triple, Sargent seat, Duplicolor-Dark seat cowl, Rizoma grips, Techlusion TFI, SBK front fender, Evoluzione slave, BMC sport air filter, 14-tooth sprocket, Desmotimes caseguard, S2R side panels, Pantah belt covers, fake CRG LS mirrors, extra black zip-ties, right grip control imprint on tank, de-cannistered, Ducati Meccanica Bologna key ring

battlecry

It is a resonator cavity.  Presumably for noise abatement purposes.  Air coming into the box makes the air mass inside the cavity vibrate. 

1KDS

Every bike I've ever owned.

NoisyDante

'07 695 Dark - Quat-D Ex Box exhaust, gold S4 forks, Woodcraft Clipons, CRG levers, KTM headlight, Motodynamics taillight, 14t sprocket, CRG LS mirrors, flamethrower, the usual refinements.  * struck down by a hippie in a Prius on September 22nd, 2010.