the new 4 strokes are much faster than they used to be. i used to have a suzuki quadracer 4 wheeler. it wasnt the fastest but it was fast. i had a ported and polished head, and hand coned pipe, and some racing reeds and what not. i raced this dude on a yamaha raptor and got owned hardcore. that thing was fast and it was pretty much stock, he had i think a aftermarket shit pipe.