yoshi header...

[Tommy 17]

my friend has the yoshi slip on silencer and wants more power can he buy a headpipe we can't find them anywhere....

[ChadEXer]

I would just call Yoshimura direct and ask them. Maybe they will cut you a deal. Also when I had my 416 put on I had the machine shop grind the inside of the headpipe a little bit and it made a bit of a difference. He might wanna look into it if he has the 416 or is going to get one