Bills or FMF fatty pipe for CR 125?

[FRC 21]

I'm going to purchase a pipe this week. Bills pipe or FMF fatty for a 1997 cr 125R. Thanks ahead guys! I'm looking for mid range power. :aj:

 

[FRC 21]

I'm going to purchase a pipe this week. Bills pipe or FMF fatty for a 1997 cr 125R. Thanks ahead guys! I'm looking for mid range power. :aj:

ttt