Whats up people, Ok i have a few questions and to all those that reply it will be greatly appreciated. I just put a pro circuit t4 slip-on on my predator and it starts to stumble at the end of every gear, i guess it would be the top end. So im going to attempt to jet this thing tomarrow and i need to know which jet this carb uses. I know that it uses the round jets but is it the large round ones or the small round jets. Also if anyone could give me a size to start with at about 2500 to 3500 feet in elevation it would be a huge help. I also have a k&n if that matters any. Please someone help me out! Thanks

 

I'd say your best bet would be to call the manufacturer of your pipe and ask them.....they should be able to help out quite a bit....or at least give you a good starting point.

 

They are small round jets. I have the dyno Jet kit and it tells me with a pipe and filter to use the 150 main for sea level and 145 or 146 for 3500 ft to like 6000 ft if I remember correctly. They also give you a different needle jet, but I'm not sure if it's a different size from the stock one. If I were you, I'd try the 145 or 6 and start with that. def. not over 152.5 main though. Hope this helps.