Trinity Racing has their Stage IV exhaust coming out for the YFZ. I was in there the other day and they were testing their pipe and it gained 10hp on the top with at least 5hp on the rest of the power curve. This was done at the end of the day and they were not even able to get the correct jetting done. This was also done with stock timing and the airbox lid on. I know it is coming out a little late, but the dyno had a bad bearing and Trinity Racing wanted acurate results. Look for their upcoming results on the finished pipe and their Project YFZ. It will have a ported head, cam mod, 13:1 JE piston, lid removed, and Trinity Racing exhaust. Trinity Racing has been building the Z400's to beat and plan to continue so on the YFZ. Go to www.trinityracing.com or call them at 877-FASTOYS.

 

10hp? JESUS CHRIST

 

I sometimes refer to Harry as God.

 

just like that big 63 hp 686 yea right more like 43 hp

 

ive seen a video of a guy doing a dyno with his stock raptor...32hp, then with his 686 and other mods...62 hp

 

im sorry 67hp

 

Yea i rember them saying they were geting 10+hp out of just a pipe for a raptor?? I call BS

 

ive heard that also...full pipe no air lid...maybe get around 5-8

 

thundervalley - if your talkin about the CT pipe and its horsepower gains I think their off but not incredibly off. I have the full CT K&N jetted with no lid and gearing and mybike runs really strong and I can beat all the raptors I race (havent come across a 686 or 727 yet I guess that was running good). What would you guys guess my HP is right now? I was thinkin around 43 or so.