Keihin FCR 41 Flatslide Carburetor / Dragbike AHRMA GS GSXR ZRX Z1 KZ1000 CB XJR. This product data sheet is originally written in English. Keihin FCR 41mm Flatslide Carburetors. ULTRASONICALLY CLEANED AND REBUILT WITH NEW GASKETS AND SEALS. Current spacing is 75-96-78 and include 35mm red velocity stacks. KEIHIN FCR 39 FCR39 39D. The item "Keihin FCR 41 Flatslide Carburetor / Dragbike AHRMA GS GSXR ZRX Z1 KZ1000 CB XJR" is in sale since Friday, January 24, 2020. This item is in the category "Vehicle Parts & Accessories\Motorcycle Parts\Air Intake & Fuel Delivery\Carburettors & Parts". The seller is "keihin-fcr" and is located in Royal Oak, Michigan.