I read the old DirtWheels magazine article last weekend that compared these two quads with the Banshee as well. Anyway, I'm more concerned about the 400EX vs. 400 Sport in a drag. I have two friends with each quad, all stock. One is sure his 400EX will win (as am I) and of course the other says his 400 Sport will do it. I just can't see the 400 Sport pulling it off. It has no low-end to speak of (the one I rode anyway) so the EX should get it off the line. In the DW article it also said the EX had a higher top speed. Other than that, the EX is much lighter and has a clutch for letting you rev out as much as you want. Shouldn't the EX smoke the Sport?

 

Yes the 400ex WILL beat the sport.

 

if the sport has been clutched/geared with pipe or any engine mods done to it, it will smoke the ex without to much trouble, stock the
sport would probally loose

 

both stock the ex should beat it but not by much,but a modded sport will smoke even a modded 400ex.

 

stock,the sport will be just behind the ex.with the mods i have,i beat my buddies modded ex from start to finish..

 

That 400L is a monster motor. Perhaps the best 2 stroke motor in ATV's ever...? Polaris just never used that motor the right way.

 

I'm not sure if i would go that far the banshee motor is capable of more power but i would say its the best single cylinder 2-stroke atv motor.

 

Ride red. Your Polaris pals will owe you big when you tow them back to the truck on a regular basis.

 

I haven't broken down lately....and the sport is a great motor, capable of producing lots of power......Polaris is better than some guys like to give credit to, and the shee is not a single cylinder, thus as he said, the sport is the best single cylinder motor made, with the shee being the best twin....

 

The polaris 400 engine is a power house when modded....


I agree that engine should have never been put on a 500lb auto quad, just think if polaris put that engine in a 350lb frame and it put the power to the ground via of a 6 speed manual now that would be one he!! of a quad....