12 Tooth Pinion Gear, Provides 3.25-1 Gear Ratio
Drive shaft pinion gear only, 12 tooth pinion gear. For use with a 39 tooth ring gear. Provides a 3.25-1 gear ratio. Slows the engine speed down, reduces power but causes less wear and tear at higher driving speeds. Made with high quality 4140 and heat steel. (Not for use with a standard 40 tooth ring gear.) It will cause noise and excellerated ring gear failure. If you have any question it is best to change the set.
Can be used on a Ruckstell or standard rear axle.
Note: If you have pits or wear on your current large ring gear, it is not recommended to change only this gear. It will cause noise and excellerated ring gear failure. If you have any question it is best to change the set.
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