The Motormate is an outboard motor locking system designed to prevent unnecessary damage to your motor as you haul to and from the water. This Motormate is designed to fit Evinrude 150 HP HO V6 E-Tech (excludes in-line 3-cylinder). Trusted by several pros such as: Guy Eakers, Ott Defoe, Bryan Thrift, Randall Tharp, Aaron Martens, Timmy Horton and Jason Christie. The motor yoke spacing is the Center to Center distance between the motor contact points securing the MotorMate to the motor drive shaft housing. The transom mount spacing is measured between the inside edges of the stern brackets. The MotorMate will not work on motors with a 25″ shaft. Please confirm before ordering. Get your Motormate and tow with confidence.