just a few times on it now but for those who think a 400 is loud with stock ignition should hear what
i got with addition of these hpd fire kit,peak hp is the most defenitive gains,at idle it rev as normal
except the piston do travel quicker even at 1200 rpm,the smoothness it give to the engine give it a feel more high performance indeed,the new race mounts give my engine no vibrations at idle through the midrange,so it is a must have items for race moded and worth the extra money.

 

not trying to do a fame story here or anything,let's put this way,even stock can we say the little fuji 378
2 stroke is louder than any others 2 smoke out there,i can tell so,but i'll not ride all over the place to **** the crap
out of it,but let's say a very private place to be tough...

hails HPD again by putting out such a great kit again,to better tune the whole package.