my friend has a stock z and my other friend has a 400ex with a fmf titanium 4 pipe and he beats the z but not by much just a bit in take off sometimes and a little in top do to his tires, but i read in dirt wheels and 4 wheel atv action that the z is supposed to beat the ex by at least 1 bike lenght ?? then why is the z being beat ??

 

a lot of it may depend on rider ability but since the ex is piped it will have a little more power and its possible to beat the stock z
and tell your friend to get his Z piped and jetted and he should have no problems

 

What year are the quads?

 

yes i have heard that to in the magazines but they are talking about a stock z and a stock ex. it says nothing about ex's with pipes. just stock.