125-200cc fmf "fatty" QUESTION

I was thinking about trying the fatty on my '10 wr144 with a power-core silencer and am wondering what the gains are with this set-up over the stock system.Any jetting changes required? The motor and carb. are stock besides some jetting changes and power-valve linkage adjustments. Any thoughts? Thanks in advance every-one!

Worked good on my 144 top end. A bit more down low and mid for sure. Mine has a PC SA .

Thanks for the quick reply! I was also wondering if the stock silencer would work with the fatty?

Put the Fatty on my 08 CR144 and it also picked up the low-mid and bike went through the gears faster. Had to take the 52 rear off and put a 50 on it; what can I say I'm too old and slow to keep up with that combo lol. I installed the PCII with it so I'm not sure how the stock one would compare with the Fatty.

I run 13/52 on my 144 and 14/52 on my 165

Stock muffler won't work. You need spark arrestor anyway

Thanks for the replies every-one, still thinking about it!

Just my thoughts.....if you did go with the fatty.....you could still use it on the 165 if you chose to go that route later on. Until of course you save for Walts modified fatty pipe!

Hmmm, more thinking!