i bought a set of FMF pipes and silencers from a guy, he told me they are fattys, i just found out that they aren't, my dad has a set of fattys that say fatty on them, mine say Gold series feel the power, they don't say fatty, SST, or Gnarly on them, these pipes make alot of power, i just don't know what they are, if anyone could help that would be awesome, im sorry i can't upload a pic of them.