Richmond Pro ring and pinion sets take it a step further. The gear sets are designed for race use only where hard launches and severe heat cycling occurs. They're made from a softer, more malleable alloy to be more resistant to breakage under harsh racing conditions. These gears feature an outstanding rotating weight loss of up to 6 pounds, ground pinion threads for trouble-free installation, and a special heat treatment for improved strength.
- Differential Case Design Type:
- GM 8.875 in. (12-bolt), passenger car
- Ring and Pinion Ratio:
- 4.11:1
- Cover Bolts:
- 12
- Ring Gear Bolts:
- 12
- Pinion Spline Count:
- 30
- Ring Gear Rotation:
- Standard
- Ring Gear Teeth:
- 37
- Pinion Gear Teeth:
- 9
- Ring Gear Diameter (in.):
- 8.875 in.
- Pinion Shaft Diameter (in.):
- 1.625 in.
- Installation Kit Included:
- No
- Carrier Series:
- 4
- Quantity:
- Sold as a set.
- Notes:
- Designed to fit 4.10:1 and numerically higher series 4 carriers.
- Axle Model:
- GM 8.875 in. (12-bolt)
