Lannon

So I take that back, I do have pipes, any suggestions on the timing, porting and the compression that I should go with? I am totally new to this, so I don't know what kind of pistons to get, how to change the timing or anything like that.. I have built tons of cars, but never an ATV! I don't run in wet areas, its all pretty dry dirt and obviously pavement for the races.. Thank you for your time!!

I got a 2001 Banshee, it is 100% stock, well this past year I started racing it 1/8 mile up at Bandimere speedway here in Denver, and had a blast, it runs really consistant but would like it to go a little faster! I still run it on the dirt so I want it to be useable on both surfaces and still run good. Can anyone give me suggestions on a build or on what upgrades I should do? Thank you Lannon