You can shorten stock 1.09" ones 1/4" per side & still have plenty of contact area even for a race app as the contact area (piston/pin) is more than is safely needed (on a BB). Shorten pressed pins only of course. The aftermarket ones can weigh less as the ID is larger (length is the same) but using a better material the strength is not compromised. Shop time on the lathe is expensive so compare time/money for which'd b the better choice for you