How are the 4 speed 2006's in the woods/offroad? I've been looking for a good 07 or newer 5 speed but they are either overpriced or too far away. On the other hand I've found some nice deals on some 2006's but I'm just leary of the 4 speed. If you go a tooth or 2 bigger on the rear does it kill your top end speed? I ride mostly single track and 4 wheeler type trails but some places have a lot of gravel road connections between trails and stuff like that and I don't like to rev out my bikes. Years back I had a 98 kx250 2 stroke and the 5 speed would run out of gears, will this 4 speed be the same or worse? Any help is appreciated.