What size fcr carb to use for a 440ex?

[laeger400]

Thanks guys

[turnandburn]

honestly I ran a fcr39 on my 416 ten years ago and hand down its probably the best carb I have ran not cold blooded tat all like the 400s are and throttle response was great.my current build I got another one to run on it.honestly get the jetting correct and you wont be disappointed I think the 440s can handle the fcr 40 though.