i heard from somebody else with a Z400 that he suggests to just get the silencer as a n upgrade, and not the full exhaust system, he says that the pipe is kinda a waste for the 200 bucks or so, and that the silencer is where all the power somes from, whats yur guys opinions on this????is he right?

 

while upgrading just your muffler will boost performance alot, adding a high-flow header that the pipe was made to work with is the best for overall power and performance.

 

go for the full system. it opens up the bike better