Keihin PWK carburetors is the dominant carb on the factory motocross machines. Because of their great performance they come stock on a lot of the leading brand bikes. With these features you can take advantage of Keihin's superior performance. Taper Boring these Carbs to 30mm and matching it up to a V-Force Reed Assembly will give you an unbeatable intake tract on the Banshee and Blaster.