Richmond Gear Fits 4 series spools. 9 3/4" ring gear diameter, 1.626" diameter pinion stem, 29 spline pinion. Manufactured from 8620 alloy.

Dana Gear Fits 4 series spools. 9 3/4" ring gear diameter, 1.626" diameter pinion stem, 29 spline pinion. Manufactured from 8620 alloy.

Richmond Gear fits 4 series spools. 9 3/4" ring gear diameter, 1.626" diameter pinion stem, 29 spline pinion. Manufactured from 9310 alloy.

Richmond Gear fits 4 series spools. 9 3/4" ring gear diameter, 1.626" diameter pinion stem, 29 spline pinion. Manufactured from 9310 alloy.

This micro finishing process reduces friction and eliminates the need for break-in procedures required to assure long gear life.

This surface improvement decreases the likelihood of cracks forming on the gear.