4 into 1 exaust

[tomoday]

can i make my stock header 4 into 1 without causing any probles

 

[bikerboy2182]

u can but just dont cap off one side like ive seen people do. ud need to make it all one smooth flowing system. maybe its possible to do right. just takes some planning

 

[1busa]

You should go 1 step farther and make a custom shotgun exhaust

 

[RYC1966]

the 4 exh tubes should go to 2 "Y" pipes....then into another "Y" making it from a 4 to 1 pipe....equal length of the legs is important as well....any aftermarket exh weighs less than stock (all things considered)....stainless or Ti is common material...if you get a look and sound that you like...have it tuned for what you have and be done with it...have fun and ride the bike

 

[Busashot]

https://www.hayabusa.org/forum/busa-mods/139972-pictures-modded-stock-gen-i-header-canister.html