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View Full Version : jetting a 440ex



worr0forr
12-20-2006, 01:53 PM
hey, i have a 99 440ex, its mostly aftermarket...i just ordered a new aluminum airbox...so i dont wanna spend the $100 dollars to get it jetted...i read threads on how to do it but i dont know what size jets i need, including pilot jet? its got a cm pipe, cm slip-on, k&n filter, and soon it will have the UM aluminum air box... any help would be great...

Wheelie
12-20-2006, 08:36 PM
Stock carb? With or without choke? Lid or no lid?

worr0forr
12-21-2006, 04:30 AM
stock carb with choke, right now it has holes in the lid but im getting the aluminum with no lid

Wheelie
12-21-2006, 07:44 PM
Start w/a 42 pilot and a 175 main.

400exrules
12-22-2006, 12:21 AM
i hope your not ordering a jet kit.

this is where i get my jets. i recommend them:
www.jetsrus.com