The ITG Megaflow JC50 Twin Carburettor Base Plates have been designed to be installed in conjuction with the ITG Megaflow JC50 filters.The base plates range from ITG fit popular carburettor applications ensuring a straightforward installation of ITG air filters. There are application specific (the range shown in the table below) and universal versions available which simply require modifying to custom sizes should the list not prove suitable.Please refer to the table for specific base plate fitments and choose your selection from the drop down menu.Centre Diameter - Diameter Of Carburettor Mounting HolePosition - Offset to the left hand (L/H), right hand (R/H) or central (Sym)