45" pistons

[thornl01]

Can anyone tell me the difference or advantages of these two pistons?

One is a stock replacement (sierra) & other is from a 60 hp block.

Thanks

[OUTBOARDER]

The cut out in the original 1986 60 hp breaths better, good for rpms!!!!

[OUTBOARDER]

Found these in the Spring.....
Wiseco 0.020" New never used
Machined Skirts, Cryoed by 300 Below and Coated by Swain tech.
Pins and rings not included.....

$200 for the pair ready to install..................

Anthony