for alot of people, the ratios are like talkin greek....you can try a 15 tooth counter sprocket. i have a 13,14, and 15 counter sprocket/ with a 45, and 50 rear. my 50 rear just collects dust, w/a 45 on the rear, i can just switch counter sprockets for where i'm goin, 13/45 works good for me in tight single track, but 15/45 is nice in wide open desert.