The 18 pitch SS prop is already @ home waiting to be tested
My motor came with an 19 pitch alu prop . Biggest difference I could see is that this prop has the tendency to suck air with the current engine height setting . This one is my spare prop now ..
I installed Boyesen reeds last year on my Yamaha and I am impressed how the motor performs whole shots and how much better the throttle response is !
Beside of the 18 pitch prop I will also test once more the 19 pitch Ballistic !