i like to see u take a yfz with 440 ex?

 

Watch Doug gust, On his Z-440.

 

keep telling urself that, ive raced a 440 and im stock......he took mine for a drive and couldnt believe the amount of torque, he even said it was quicker than his so then we raced and i spanked him!, depending on how well u know engines and how to modify them properly u may be able to beat him, but im doubting it

 

maybe it wasn't jetted right. I've ridden stock raptors...nothing special. A well tuned 440ex, well, thats different, very nice, well balanced bike, with added power, how can you go wrong?

 

i don't think the 440 is going to be taking any 450 yammy, and i happen to have a 440 just don't think it going to happen, even with my 90 pound pilot.

 

I have a stock predator and i raced my buddies CT racing built 440ex with all kinds of stuff on it. We were even the whole race, sometimes i would pass him and he would pass me, if i can hang with a 400ex with a professionally built race motor and i'm stock you will need to do alot more then pipe filter etc to beat a predator.

 

The 440 kit, jetting and a slip on wont do much. My motor is putting out around 42 horsepower to the rear wheels which is pretty good for a 400ex. I raced trailrider500 with my exhaust tuned way down for noise and the race was pretty good considering how corked up my quad was, not to mention I had the stock filter at the time. If you wanna race any of the new high perf quads you will have to do some serious work on your quad, the stock 400ex motor is reliable, but lame.....very lame.

 

you could take him going around a track if you are better

 

i can beat stock 450's on my cousins 416ex all the time!!!and smoke most 400's out there

(i'm 100lb and know how to ride)so that helps

 

looks like you have lost some weight since you created your signiture lol