Hello to all from a new guy,I just thought I would let you guys now that this system rips !!!!along with the powernow. All I can say is that there is one very unhappy CRF owner out there(No Joke).I even gave him a 20'leed and I still took him,I would take him off the line every time and he could never catch up to me.Im running a 162main & 48 pilot and a stock yz needle with all the free mods.The yoshi comp system & powernow makes this bike rip.I also picked up the TEC quit system with the pipe for those hoshhosh times. This set up is highly recomended.