When I bought my Bass Tracker 175txw in August of 2014 it had a 60 fourstroke on the back.  I asked the dealer if he could put a 75 fourstroke on it instead of the 75 opti.  Well they did what I asked but it didn’t look like the new design but it is a 2014.  My question is, in mid 14 Mercury changed the Mid Range motors and the newer models has the 2:07 gears and mine has the 2:33 gears.  What other changes did they make other than the gears and oh yeah the newer is a 2.1litre and mine is 1.7 litre.

Mine actually pushes my boat great no problems I am just curious. I also have the Spitfire X7 in 19p and moved motor up to 3rd hole from the top and since I moved it it is night and day on speed and overall performance.

I don't know how much boats and motors have changed over the years. I have a Bass Tracker 175 with a 40HP on it. When I was checking around for a new motor the dealer told me if I went with a 4 stroke a 60HP would be as big as I could go due to the weight of a 4 stroke motor. The boat is rated for a 75Hp.

Well the weight is no issue at all, I was just curious about the changes and why they went from 2:33 gears to 2:07.  I believe that now you can only get 2:33 in command thrust, which I am glad mine has the 2:33 gears.  Like I said I have no issues I absolutely Love my boat, the way it’s set up and all I am just curious,