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Motive Gear Performance Differential PRO Gear Lightweight Differential Ring And Pinion - Big Pinion


Motive Gear

Model #F990389BP

In Stock

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Shopper Award

Motive Gear Performance offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear Performance. Motive Gear Performance products can be found in the winners circle at NHRA, IHRA, SODA, SCORE, BITD, Ultra-4 and NASCAR events. The superior quality of Motive Gear Performance components is the result of years of racing development, outstanding design, and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers. Motive Gear Performance ring and pinions are used by the top drivers and racing teams worldwide. Winning is #1, and Motive Gear can get you there!

Motive Gear Performance - PRO Gear Lightweight Differential Ring and Pinion - Big Pinion


  • California Proposition 65: Cancer and Reproductive Harm -
  • Title: Differential Ring and Pinion
  • Ring Gear Diameter: 9
  • Ring Gear Bolt Quantity: 10
  • Cover Bolt Quantity: Dropout
  • Pinion Shaft Diameter: 1.87
  • Ring Gear Tooth Quantity: 35
  • Pinion Spline Count: 35
  • Ring and Pinion Gear Ratio: 3.89
  • Ring Gear Rotation: Standard
  • Pinion Gear Tooth Quantity: 9
  • Differential Case Design Type: Ford 9
  • Ring Gear Material: 9310 Steel


Universal Fitment: These products should work with your vehicle as they are universal for fitment. We do recommend the customer researches and does due diligence regarding application. This should help confirm that this will work for your vehicle.

Other Part Numbers:
Motive Gear #MOTF990389BP

Proposition 65

/!\ warningWARNING: Cancer and Reproductive Harm

At Motive Gear, from inception to inspection, our parts surpass rigorous quality control tests. When you open your Motive Gear box, you can see the quality of our hard work. Our highly qualified quality control technicians are up-to-date on the latest industry innovations to ensure that the quality of our product is unsurpassed. Our parts are TOUGH. We back our Motive Gear Performance ring & pinion gear sets with a 2 year / 100,000 mile no-nonsense warranty and all other products with a 1 year / 50,000 mile warranty

Installation Instructions

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