Having not gotten to ride much the last few months, the Sport surprised me the other day on a little spirited jaunt through the hills (I was thinking of the SoCal guys and their amazing climbs just off the coast . . . )   I had, frankly, forgotten about the airbox bellmouth modification, but the lovely tone and acoustic sonority immediately reminded me!   It occurred to me that this primary *glass mandrel* provided the elusive answer to the desire to change the stock airbox .
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