First off I love this sled. It handles like a dream, great suspension, plenty of power corner to corner and floats in the powder. It whails! A couple of observations.....with a 136 track 1.75", stock gearing 23/39 (1.7) max speed is 85 mph. Though it gets there in a heart-beat, I thought it would do a little better top end. Any ideas......much thanks and Happy New Year!