heres my google for atv trails in tn
Tennessee ATV Trails
woods racing takes a TON of endurance- going to need some better suspension for sure- widen it out a little- 6-ply tires..
xc racing will find the weakest link on your bike- when building xc bikes i hear some people say they loctite bolts.
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even though this is bf- a 4 stroke would excel at xc racing- if your really going to get into it a 450r or 400ex can be built pretty cheap. (without having to buy LT a-arms for longer shocks, etc.....)
GT thunder rebuilt 450r shocks / GT thunder links- cheaper than aftermarket shocks. Lots of cheap mods you can do to the 4 strokes.