That,s cool that he,s trying again. Does he have porting done on the athena 144 ? The 144 athena kit is barrely faster than,a true 125. The stock cylinder puched to 144 and ported is faster,than the 144 athena kit. HGS makes a 125 and a 144 pipe,I would think he,s giving up some hp with the pc pipe,even tho it,s good on a 125. If your going put a 144 on the gate, make it the best 144 it can be,and use VP MR2 to make sure your using the best fuel available. Get a vortex ignition also. If the whoops are big,he has an advantage there,along with the corners and steep jump faces. Good Luck Renner.