Whats the best engine kit for the Z400 my brother inlaw wants one but he does'nt know who to buy it from. He has a CT full exhaust and removed the airbox lid and snorkles but he wants more power. What manufaturer makes a good reliable kit. How big can he go and still be reliable we do alot of trail riding so he wants to keep low end and mid range power.

 

Does'nt anyone know of any engine kits.

 

I am sure that trinity has one but dont know sizes... just have him call diff companys and just ask around...[img]i/expressions/face-icon-small-confused.gif[/img]

 

The trinity kit is supposed to be nice, but I would go with the Yoshimura 453 kit if I had a choice. That is a great kit and supposedly very reliable also. I have also heard great things about the Thumper 440 and 470 kits they make. Good luck.