well first ride in a long time on the 400 and buddy had a 03 raptor k&n,yosh pipe man is that LOUD any way i thought i would see how my 400 would do well his first gear was not bad but then i got my but spanked bad i geuss i have to take it to my local dr and see if he can squeeze some more power out of it? i hope so i put the bug in his ear about running it on the dyno to see what she is doing

 

400 xpress the posibilties are endless
check out these sites
www.hpd-inc.com
www.aaenperformance.no/atv.php
http://www.hotseatperformance.com/
http://www.rittercycle.com/

 

anyone with a trail mod beat 660 raps? if so what is your setup?