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3.90 Gear Ratio

  • ZG GM8.5-390 USA STANDARD DIFFERENTIAL RING AND PINION
    $208.42 ZG GM8.5-390 USA STANDARD DIFFERENTIAL RING AND PINION
    USA Standard Ring & Pinion gear set for GM 8.5" in a 3.90 ratio Fits GM 8.5" and 8.6" 8.50" ring gear diameter 30 spline pinion 10 ring gear bolts 3.90 ratio USA Standard ring and pinion sets are...

  • 49-0034-1 RICHMOND DIFFERENTIAL RING AND PINION
    $225.97 49-0034-1 RICHMOND DIFFERENTIAL RING AND PINION
    Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing...

  • GM10-390 MOTIVE GEAR DIFFERENTIAL RING AND PINION
    $227.48 GM10-390 MOTIVE GEAR DIFFERENTIAL RING AND PINION
    All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and...

  • YG GM8.5-390 YUKON HIGH PERFORMANCE DIFFERENTIAL RING AND PINION
    $284.70 YG GM8.5-390 YUKON HIGH PERFORMANCE DIFFERENTIAL RING AND PINION
    High performance Yukon Ring & Pinion gear set for GM 8.5" & 8.6" in a 3.90 ratio Fits GM 8.5" and 8.6" 8.50" ring gear diameter 30 spline pinion 10 ring gear bolts 3.90 ratio Yukon Ring and...