Iwas reading on douggust.com that the rev box will only work if you have a compression of11:1 or higher comp[ression and after market cams. i think the z has an 11:3 compression. so if i pt the ct racing pipe filter and jet kit and then the rev box and cams it should benefit with the stock compression right.

Thanks

 

i am also thinking about getting cams and a rev kit for my z, i was looking at the doug gust site and i saw one of the ask the pros that said on the z 400 that the stock compression is good enough to get great benefits from the rev kit and cams, on other quads you need better compression but not on the z, thats what i got out of the pros reply