Rising KIESLER 28mm inlet billet, for Minarelli Engines Horizontal: allows mounting the carburetor towards the rear wheel (as in Piaggio engines). Recommended for fitting with 28mm carburetors up, to match with the special collector MHR 28 x 35 art. 026639B for KOSO carburetors, KEIHIN PWK, STAGE 6 PWK, OKO