HEY JUST WANTED TO KNOW WHAT SIZE CARBS WOULD BE BETTER FOR MY 690 RAPTOR?? IVE HEARD THAT THE 35FCRS WOULD BE GOOD BUT WOULD 39 FCRS BE BETTER OR JUST A WAIT OF MONEY?? IM RUNNING ON 100+ OCTANE, AND WANT TO KNOW WHATS BEST FOR MY BIKE. I HEARD THAT THE 39'S MIGHT BOGG IT OUT. IS THAT TRUE?? AND WHERE WOULD I BE ABLE TO GET THE BEST PRICES ON THOSE 35MMfcrs. AND WHERE?> HOW MUCH??? N 39NS TOO

 

At this point, you'd gain more power from an exhaust change than a carb swap. A set of Tim Barker or LTE pipes will give you a better gain for less cash outlay.

 

LTE pipes are 700, Barkers are 800. You aren't talking about much less $$$. The FMF setup is killing his top end, but its got great low and midrange. I guess it depends on what type of riding he does, but he would see significant hp gains with a better pipe setup.