Thats kinda hard to be spacific!!!!
I would say "fastest where??"
I have a 400ex with some goodies like RPM axle,, laegur +2 a-arms,,Ohlins off of a c-dale ,, R4 slipon,, jets,, filters,, and I can out run or hold my own in the woods or a track with just about anything,,,,,With that said,,,
I dont have the fastest quad out there but It will be faster than a quad that is not in their elament ,,,,a grizzly will be faster in the mud than a 400ex or the same type of quad...
What ya mean Fastest? In a top end run? From point A to point B in the twistys? I have buddys with 4wheel drives that can go faster than me when they are wound out but I get wound out first!!! Who is the faster quad I ask you?
I ride with a guy that has 3 Cannondles and he can smoke me on any of them just about any time he wants,,,,On top end there is no comparison , 397 vs 450 but in the tight slow sections were you dont need the motor screaming but you need lugging the most I will have the advantage,, When Im taped out in 5th ,the dale isnt even beathing hard yet,,,and most of the time my bud shifts on his way by me!!
I go to Little Sahara dunes and St Anthonys and see some fast quads going up sand Mnt and Chokecherry, But they cant go anywhere there are jumps or anything,,They are faster up the Mnt than me but they cant even follow me to a big dune because im faster to get their!!!!! I watched a DS 650 get spanked by a Z400 up chokecherry,, Why? could be alot of things,, I bet you the DS would spank the Z on flat ground though!!!!!
I rode the 450r out at St Anthonys and it didnt come out and say it was fast or anything, it just handled better than most quads,,, it does have the long legs like a banshee,,or a C-dale ,or a DS 650,,
When It come down to who has the fastest quad ,I turn away in disbelief of the people that say a Yami 450 will beat a Honda 450 ,
ECT , because if you took them out to a place where you could compare on a even feild you would see that each one will do better than the other at different things ,,,If you took them out to top end race there only can be one winner,,,see my point!!!!!
I know two brothers that own a Yami 450 with goodies and a C-dale with goodies race up Sand Mnt a hole bunch of times and the Yami would win most of the time,,and win with most quads,but he did get beat sometimes,,,the last race the one brother with the C-dale took on his brother with the Yami again knowing that he would probly get beat again but this time the dale won.. Now what is the faster quad????
This is not ment to rant and rave but it how I feel on the subject
Every quad is only as fast as the driver ,, no faster!!!