having trouble with brakes on my wifes 750 aero 2006 with a 2005 motor trike kit on it. Pulled the brake pads and cups from wheel cylinders and went to NAPA . They cross ref. the numbers for brakes found the were for ford ranger 1985-87, mustang 2, 1987-90 9in. shoes. cylinders 13/16 in. cups ranger also hope this helps some else.