Stock lower unit. 250 xs comes with sportmaster. Xb21 has already been 101.8 with stock 300r with s a stock lower unit (again a sportmaster)
Not questioning BCB They seem quite intelligent and reponses are dead on. It’s the owners that are misinformed.
Something that may trip up mass produced boaters is the stock SHO lower unit wil not run on a performance boat. It cannot be fully surfaced It is not much if any better than a torqumaster lower unit.