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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

Who is Motive Gear?

Motive Gear is a Midwest Truck and Auto Parts division specializing in producing high-quality drivetrain components for the automotive industry. They offer a wide range of products from differential bearing kits, ring and pinion gear sets, transmission kits and components, transfer case parts, and replacement axle shafts. Today, Motive Gear is one of the most sought-after brands when it comes to drivetrain parts.

Quality and Affordable Parts

Motive Gear provides high-quality drivetrain parts at an affordable price. All of their products are designed using the latest manufacturing equipment and goes through an extensive quality control test. It ensures that their products achieve a perfect fit, provides optimum performance and longevity.

Choice Of Champions

Their products are also used by many racers from various racing disciplines such as IHRA, NHRA, NMRA, SODA, NMCA, BITD, and NASCAR. It is a testament to the quality and performance their product provides. Their racing participation also allows the company to gather vital data that lets them improve their products further. 

Purchase Motive Gear Products At Vivid Racing

If you are planning to upgrade your drivetrain and are searching for a company that you can trust, then Motive Gear is the brand for you. Over the years, they have consistently given customers parts that they can rely on and have proven that quality parts do not always have to be expensive. To know more about Motive Gear, visit Vivid Racing and check out their list of products that fit your specific requirement.

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

Click to view the Installation Instructions here