I had Bass Proshop install the Mercury 25" 2010 15 HP 4 stroke ProKicker Tiller model that included the Power trim & Tilt. I think they first came out October 2008 in this 15 HP & 20 HP ProKicker models. The 9.9 HP came out ~ 5 years earlier. So the 15 is like the 20 HP and the 9.9 cowel will...
