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Ring and pinion competition series gearsets

From the most well-known brand in automotive performance differentials, comes high performance aftermarket ring & pinion sets for performance enthusiasts. 

Eaton's competition series ring and pinion gear sets are made in the U.S.A. from high quality 9310 steel which provides the higher impact resistance needed at the track. All Eaton ring & pinion sets can be ordered with a patented Super Finish process, eliminating the need for break-in. 


9310 Steel
High impact resistance for track use
Rolled splines increase tooth strength
Precision made
Made in the USA


  • Computer Numerical Controlled (CNC) cut teeth which improves gear meshing, reduces stress, and ensures smooth engagement.
  • Rolled splines for additional tooth strength and longer life.
  • Computer controlled heat-treated steel for exceptional durability.  
  • Optional Super Finish eliminates break-in requirement.   

Super Finish

An isotropic precision finish is available on both street and competition models. By reducing friction and wear, it provides 3-5% more horsepower, improves oil retention, and eliminates the break-in period.

Why Eaton?

Five reasons to buy an Eaton Ring & Pinion gearset.

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