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Richmond Gear 6901691 Ring and Pinion Set 4.88 Ratio GM 8.5/8.6 10-Bolt

(Chevrolet Silverado 1500 1999-2020, Silverado 1500 HD 2001-03, 2005-06, Suburban 1500 1995-2014, Camaro 1970-81, Tahoe 1995-2015 + 150 more models)

Part of: Richmond Gear Excel Differential Ring and Pinion Set

Other options in this family: Richmond Gear F9411 Richmond Gear F88410 Richmond Gear 4900391 Richmond Gear 12BC373T Richmond Gear 6903041

Manufacturer

Picture for manufacturer Richmond Gear

Part Number

6901691
4 reviews
Sale Price

$351.98

1 left at this price

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Usually delivered within 2 days

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Product Details

The Richmond Gear 6901691 is a precision-engineered ring and pinion set designed for GM 8.5-inch and 8.625-inch 10-bolt differentials. Featuring a 4.88:1 gear ratio, this set is ideal for high-torque street performance, off-road applications, and drag racing where aggressive acceleration and improved launch characteristics are essential.

Key Specifications:

  • 4.88:1 gear ratio for optimal torque multiplication
  • 39-tooth ring gear and 8-tooth pinion gear configuration
  • 30-spline pinion shaft
  • 3 Series carrier (requires 2.73 or numerically higher carrier)
  • Hypoid gear design reduces noise and wear
  • Fits GM 8.5-inch and 8.625-inch 10-bolt front or rear differentials
  • Ground pinion threads for trouble-free installation

Richmond Gear Quality:

Richmond Gear's Double Diamond symbol represents over 80 years of professional-quality manufacturing excellence. Every ring and pinion set undergoes rigorous quality control testing for tolerances, fitment, and strength. The superior heat treatment and state-of-the-art manufacturing processes ensure these gears can withstand the harshest conditions in both street and racing applications. Richmond products have proven themselves as winners at the Daytona 500 and U.S. Nationals for decades.

This set replaces Motive Gear G885488 and Yukon Gear 24162, and is backed by Richmond Gear's 2-year or 100,000-mile warranty. Professional installation with proper gear setup is required for optimal performance and longevity.

Products specifications

Fits

Chevrolet Silverado 1500 1999-2020, Silverado 1500 HD 2001-03, 2005-06, Suburban 1500 1995-2014, Camaro 1970-81, Tahoe 1995-2015, S10 1994-2004, Impala 1971-85, 1994-96, Colorado 2007-13, Malibu 1973-77, C1500 1988-99 + 145 more models

Calculator

Gear Ratio Calculator

Carrier Series

3

Cover Bolts

10

Installation Kit Included

No

Notes

Gear set requires a 2.73 or numerically higher, 3 series carrier. Will not work with factory ABS reluctor ring.

Pinion Gear Teeth

8

Pinion Shaft Diameter (in)

1.626 in.

Pinion Spline Count

30

Quantity

Sold as a set.

Ring and Pinion Ratio

4.88:1

Ring Gear Bolts

10

Ring Gear Diameter (in)

8.500 in.

Ring Gear Rotation

Standard

Ring Gear Teeth

39

Tool

Transmission Lookup

Ring Gear Bolt Quantity

10

Ring and Pinion Gear Ratio

4.88

Cover Bolt Quantity

10

Pinion Shaft Diameter

1.626

Ring Gear Diameter

8.5

Differential Carrier Break

2.73 and Higher

Ring Gear Tooth Quantity

39

Differential Case Design Type

GM 8.625

Ring Gear Material

8620 Steel

Differential Case Design Type

GM 8.5

Pinion Gear Tooth Quantity

8

Prop 65

WARNING: Cancer - www.p65warnings.ca.gov

Shipment was quicker than I thought and the product was just as described. It was cheaper than else where. Thank you Autoplicity

Very pleased with the service and quick shipping. Checked out through Amazon payments without any issues. Item ordred was the Hella Supertone Horns. Arrived in original box and packaging. Will not hesitate to order from Autoplicity in the future.

Great prices very fast shipping!!!

Autoplicity had the lowest price online for the product I needed. I will definitely buy from them again.

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