3.89  Ratio M/W 12” Gears are produced from 9310 alloy. This ratio is a Regal-Beloit produced gear.  Option available are Shot Peening and REM finishing. These gears fit MW modulars with series 2 spool (P/N 53108) or (P/N 90034)  carrier. Pinion shaft has a 3/8" hex for oil pump drive.