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Nitro Gear & Axle Ring and Pinion Gear Kit; 3.90 Gear Ratio (94-04 Mustang Cobra)

Item 404762
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Market Price $294.39 You Save 13% ($38.40)
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$255.99 (kit)

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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Ring Gear and Pinion Kit
      • 3.90 Gear Ratio to Transfer Extra Power to Wheels
      • Enhances Acceleration
      • 30-Spline Pinion
      • Precision Machined Using Heavy Duty 8620 Steel
      • Compatible with 10 Ring Gear Bolts
      • 8.80-Inch Ring Gear Diameter
      • Computer Controlled and Heat Treated
      • CNC-Cut, Triple-Lapped Composition
      • Improves Low-End Torque and Acceleration
        Made in the U.S.A.
      • 2-Year Warranty
      • Hard Difficulty Installation
      • Fits All 1994-2004 Ford Mustang Cobra Models


      Aggressive Power. The Nitro Gear & Axle Ring Gear and Pinion Kit - 3.90 Gears is engineered to deliver big in torque by optimizing the ratio of the ring and pinion grooves. With each spin, you’ll get greater force and increased torque creating aggressive power.

      Low-End Torque. Featuring a 3.90 gear ratio, you’ll get extra power transferred to your wheels which in turn creates more energy for acceleration. With a 30-spline pinion and an 8.80-inch ring gear diameter, this low-end torque is definitely a game changer for your Mustang.

      Superior Construction. Proudly made in the USA, this precision machined construction features heavy-duty 8620 steel that is CNC-cut, triple-lapped, and heat treated. Crafted to be a perfect fit, this gear kit is exactly what you need to tap into your Mustang’s power potential.

      Installation. This difficult install can be completed in 4 hours or less. The manufacturer suggests an experience drivetrain mechanic complete this install due to the level of skill required for a secure installation.

      Warranty. The manufacturer stands behind this gear kit with a 2-year limited warranty. Any defect found as a result of faulty manufacturing will be covered in full.

      Application. The Nitro Gear & Axle Ring Gear and Pinion Kit - 3.90 Gears is built to be a precision fit for all 1994-2004 Ford Mustang Cobra models.



      Nitro Gear & Axle F8.8-390-NG

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Ring Gear
      • (1) Pinion Gear

      Customer Reviews (4)

        Brand Image

        Reviews of Nitro Gear & Axle Drivetrain products have an average rating of 4.6 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang

          • Cobra - 94, 95, 96, 97, 98, 99, 01, 03, 04

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