Dell Orto 32x60mm Threaded Inlet Trumpet for Dell Orto PHBG carburetors
This inlet trumpet has many applications, but it's most common is to allow the continued use of the stock airbox on an '99-'05 RS50 that has a PHBG21 or Malossi 21mm carburetor fitted.
This part is included in the Malossi 21mm Dell-Orto Carburetor Kit