Strut bearings are replaceable. Whip struts are used to prevent deflection or whipping of the shaft in high speed boats with flatter shaft angles. The two larger fins are used with the highest speed inboard boats. The shaft log prevents water from coming into the boat through the shaft hole in the bottom of the boat. Shaft logs are available in varying angles to match the shaft or strut angularity.
Shafts come in standard lengths as noted.
Shafts can be cut to any disired length and keyed on the driving end without additional cost. Direction of rotation must be specified. A prop nut kit furnishes the parts necessary to securely hold the propeller on to the shaft. V-drives can be obtained that include integral forward, neutral and reverse gears. Others contain forward and neutral, while there are those that have no reversing or neutral position.