Processing customization is the purpose of refitting size 50 caliber (mm) model 50mm narrow air filter cup suitable for carburetors with a carburetor with an outer diameter of 50mm air filter Item No. SCL-2017080012 Specifications 50mm blue narrow, 50mm red narrow, 50mm titanium narrow , 50mm silver narrow fit model KLX250 KX85 CRF230 KLX125 YZ125 WR450 DR-Z125 fit model XTZ125 YZ250 WR250 RM85 CRF450 fit model CRF230 XL125 150 XR125 XR250 product name: narrow 50mm air filter cup PWK KOS O Keihin OKO/21 24 26 28mm /30 mm modified carburetor wind collector air filter cup installation model: motorcycle modified carburetor universal PWK carburetor PE carburetor KOSO carburetor OKO carburetor weight: 0.2KG color: gold red titanium blue silver