Hello Everyone,

I just picked up a barely used 2009 Eton 90r for my son. This is a 4 stroke and he loves this thing. It is running great now, but I would like to know what are some good mods for the 4 stroke 90r. Right now he is just riding on the trails right now. I have looked all over and I havent found any mods for his atv, just the 2 stroke 90. What would be the best thing to do first? Would it be different sprocket size, clutch kit, different roller weights, air filter, or carb? Looking forward to hear some suggestions.

Thanks,
Bill