There are 3 drive shaft lengths
- 79″ is standard for all motors 9 horsepower and over.
- 72″ is standard for all motors 8 horsepower and under.
- 60″ is an option for smaller boats with transoms less than 16″
The rule of thumb is you can always go to a smaller boat with the drive length.
If you get a 60″ drive it is not recommended for transoms 16″ and larger.