Hi, I am thinking about buying a new fourwheeler and I have considered an LTZ 400.
I have heard a lot of stories about people having valves drop and other similar motor issues like this. Can anyone give me any info on this? Can you tell me how preventable this problem is? Thanks in advance.

 

It happens because the stock valves are 2 piece. Then people add a rev box and rev the hell out of them, float the valves, valves hit the piston and break off. Do not get a rev box with stock valves. I say don't get one at all the quad has plenty of power with out it.