This is the Team Associated replacement 66 Tooth 32 Pitch spur gear that comes with their gas trucks. This is a direct fit replacement molded nylon part. The spur gear transfers power from the clutch bell pinion to the transmission. This is held to the transmission with 2 screws.
One 66 tooth, 32 pitch gear
Note: Also available with 64teeth (ASCC8862)
Outer Diameter: 2-1/8"
Inside Diameter: 3/8