I've heard the Yoshimura ( YOSHI ) system will be out by late June. Could this be the best system ever for the 400ex
Price range from $480 - $670

These guys are known for making outstanding exhaust systems. What do you think?

 

System has been out.Saw one at Snd Mtn,Nevada a month ago,guy already had it for a month on his 00 400ex.Stainless header(stepped pipe like Big gun) with Ti can.Nice looking,good fit and finish.Still beat him up comp hill by 3 quad lengths and that was with my old modified header and stock can.Stepped header improves low-mid but wont rev out on top,same problem with Big Gun.

 

Hey how's the FMF Powercore, w/ header do ?