Description
High Performance Upgrade. The Motive Gear 8.25-Inch Rear Axle Ring and Pinion Gear Kit with a 3.90 gear ratio is a reliable replacement for Chrysler 8.25″ and 8.375″ axles. It enhances drivetrain performance by optimizing torque distribution, improving vehicle acceleration, and increasing fuel efficiency.
Construction and Appearance. Manufactured from high-grade 8620 steel, this ring and pinion set is engineered for durability and strength under demanding conditions. The ring gear features a standard rotation and is precision-machined to ensure a perfect fit and long-lasting smooth operation.
Installation. Installation requires experience to properly set the gears. The kit fits factory-prepared axles with dual-drilled bolt patterns compatible with both 3/8″ and 10mm bolts, so no additional drilling is necessary.
Warranty. This product includes a 1-year or 50,000-mile warranty.
Application. Designed specifically for 2002-2004 RAM 1500 vehicles equipped with Chrysler 8.25″ axles, this ring and pinion set is an ideal OEM replacement without exceptions.
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Motive Gear C8.25-390
CA Residents: WARNING: Cancer and Reproductive Harm
- For Chrysler 8.25″ and 8.375″ (C213R/E) Axles
- 3.90 Gear Ratio
- Requires Carrier with 2.71 Ratio or Higher
- Dual Drilled for 3/8″ and 10mm Bolts
- 10 Cover Bolts
- Differential Carrier Break at 2.71 Ratio and Above
- Chrysler 8.25 Differential Case Design
- Pinion Gear Tooth Count: 10
- Pinion Shaft Diameter: 1.626 Inches
- Pinion Spline Count: 27
- Rear Position
- 10 Ring Gear Bolts
- Ring Gear Made from 8620 Steel
- Ring Gear Outside Diameter: 8.25 Inches
- Standard Ring Gear Rotation
- Ring Gear Tooth Count: 39
- Fits 2002 – 2004 RAM 1500 Models






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