125-200cc 08 Cr125 with Fatty whats your jetting?

Hey guys thanks to a fellow member I picked up a FMF Fatty for my 08 CR 125. For those of you that are running this pipe please share your jetting numbers. I did a search and could only find 2 responses on this bike/pipe combo. Thanks, John.

It is getting colder here so I went to fall/winter jetting. I rode today and the bike ripped. Here is what I had.


104 Sunoco unleaded mixed 40:1
12:50 gearing
60 degrees temperature 800 ft. elevation
3.0 slide
35 pilot
6DJ8-59 with clip in 4th from top position
390 main
1 and 1/2 turns out on air screw

Thanks. I had a chance to do very little riding yesterday with the Fatty on and I can feel a better pull in the mid range for sure. I haven't changed my settings from the 93 oct., 40 to 1 mix, stock slide ( whatever it is ), 35 pilot, 400 main, 4th clip down from the top, and 1 1 /2 turns out. I will do some more testing this week.