Hey everyone,

I have a 2007 trx 400ex with nerf bars and a bumper (rest is stock besides tires). My brother has a 2002 400ex and we occasionally drag race. I Overall we are similar in experience level but I might be a little bit bettor rider. However, when we drag race he seems to always just win. I think this is because he has the 15 tooth sprocket while my trx has a 14 tooth.

So my question is, how can I make my quad bettor for drag racing without changing sprocket or major changes?

Would a UNI air filter make a difference? What is the best slip on exhaust for the money? How is the DG and Lexx slip on?

All reply's are helpful, thanks