Yoshimura exhaust The comp series is the yoshi everyone refers to when saying how great they are. they are the best for the Z400, seems suzuki and yoshimura designed them to work together..

 

Yoshimura probably is the best. I've never ridden on a stock Z with that pipe but it seems to work good on a built motor. I was gonna get it, the only thing that stopped me was the massive amount of people that have them. I wanted to be different and now i am.

 

bills works good and is cheap. i'm running a powerbomb with an e-series it works good too.