Andrews .105" Gage PinsCaracteristicas: Used to measure the outside diameter of cam drive gears Made in the U. S. A. There are two basic differences between 90 99 cam gear sizes and earlier years. The overall range of gear pin measurements (from the largest gears to the smallest) was reduced in '90 from . 006" to . 003". The large gears are the same size for both 84 89 and 90 99 (green and black color codes). Gear size measurements (over pins) are listed in the 1990 H D