2001 400EX WOULD LIKE TO CHANGE MY GEARING . ANY IDEAS SHOULD THE FRONT OR REAR BE CHANGED 15/38 . LIKE TO RIDE TRAIL MOTORCROSS.

 

I dropped the front 1 tooth, and it was to much. Couldn't keep the front end on the ground. Great for play riding, but not practical on the trail. As a compromise, I went one tooth larger on the rear, for a little lower gearing.