Home › Forum › Ask A Member › Mercury racing prop › Re: Mercury racing prop
August 16, 2017 at 10:17 pm
#63250
The KG7 has 16:21 gears and the Mark 25 has 13:24 gears so the prop will be turning slower. So say you found a AJ50 for Merc KG7 7 3/4 X 11 it is smaller than the MK25 prop. You can find a 9 X 11.5 prop for the Mark 25 so you go faster using it.