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What airboots to use with FCR40
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Posted by: firstturn

Okay, so I installed an FCR40 on my KFX400 with a Yosh 450 motor and have the jetting pretty close. Now the only thing that concerns me is the airboots. I am using the stock airbox and stock boots, but they don't reach far enough onto the carb for me to feel comfortable.

I thought I remember reading that some people were using EX400 airboots (from the carb to the airbox??) and DRZ boots (from the carb to the cylinder??), does this sound correct? Any recommendations?

Thanks,

Posted by: 4trax250x81

I have the 400ex boot on my Z, I also have an aluminum airbox and the FCR 39 carb. The 400ex boot works good but its a little longer so it might take some trimming to get it to all work perfect.

Posted by: panteramatt

Well, you can get a dremel tool adn grind out you stock head boot or get a drz400 boot which would be better.

Posted by: Zero74

Well I've heard you could use the boot from an 03 or earlier model 400ex on with that carb. Im going to be trying that pretty soon. Maybe this week if i can get a hold of one. i

Posted by: firstturn

Let me know how it works out if you get one.

Thanks