Just to see what everyone thinks i want know what you think the most effective mod is on a 4 stroke atv. Although i have very little experience with mods id say tires. Tires can instantly change your handling, top speed, and acceleration. What do you guys think?

 

Nitrous Oxide, $400, 3 hours and you are untouchable. If done properly it will be as reliable as stock. I ran nitrous in an old 200x for 4 years without a rebuilt, started on the first kick everytime while very highly mod bikes bearly run.