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  See more parts for Buick Apollo
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EXCEL from Richmond Differential Ring and Pinion - GM75410OE
EXCEL from Richmond Differential Ring and Pinion - GM75410OE - Image 2 EXCEL from Richmond Differential Ring and Pinion - GM75410OE - Image 2

If you're looking to give your ride a serious upgrade, the EXCEL Differential Ring and Pinion from Richmond is a solid choice. These gears are designed to replace the original equipment in a wide range of cars and trucks, and they do it without breaking the bank. I've used these in my own builds, and I can say they hold up like a champ, delivering that OEM quality you want without the hefty price tag.

This particular set is crafted for GM 7.5"/7.625" axles, which means it fits a bunch of popular models. With a gear ratio of 4.10, you’re going to notice a real difference in acceleration and torque. Whether you're hitting the trails or just cruising around town, these gears will help you get the most out of your vehicle.

Features

  • Heads up: California Proposition 65 warning for cancer and reproductive harm - check out www.P65Warnings.ca.gov for details.
  • Works with carriers that have a break of 3.23 and higher, so you're covered if you’re running a beefier setup.
  • This is the Differential Ring and Pinion you’ve been searching for.
  • The ring gear measures in at a solid 7.5 inches, which is a great size for performance.
  • It comes with 10 bolts to keep everything nice and secure.
  • And yes, it also has 10 cover bolts.
  • The pinion shaft is 1.438 inches—just the right size for durability.
  • You’re looking at 41 teeth on the ring gear, which helps with that smooth engagement.
  • With a spline count of 27, you’re getting a solid connection.
  • The 4.10 gear ratio is a sweet spot for both street and off-road performance.
  • Standard rotation means it fits right in without any hassle.
  • The pinion gear has 10 teeth, balancing strength and performance.
  • Designed for GM 7.625 cases, it’s built to fit right.
  • Made from 8620 steel, these gears are tough and ready for action.

Notes:

This set is specifically for GM 7.5"/7.625" (10 Bolt) axles, with a 4.10 ratio and compatible with 3.23 ratio carriers and higher.

Fits in the rear position, but also works for the front if you're looking to swap things up.


Products Fitment:

These gears fit a wide range of vehicles, including:

  • Buick Apollo (1973-1975)
  • Chevrolet Camaro (1982-2002)
  • GMC Jimmy (1983-2005)
  • Pontiac Firebird (1977-2002)
  • And many more—check the full list for compatibility!
Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
1973-1975
 Buick Apollo
1977-1981
 Buick Century
1991-1996
 Buick Commercial Chassis
1976-1985
 Buick Electra
1977-1983
 Buick Estate Wagon
1975-1985
 Buick LeSabre
1977-1987
 Buick Regal
1977-1978
 Buick Riviera
1991-1996
 Buick Roadmaster
1975-1979
 Buick Skylark
1987-1990
 Cadillac Brougham
1982-1984
 Cadillac DeVille
1982-1990
 Cadillac Fleetwood
1985-2005
 Chevrolet Astro
1987-2001
 Chevrolet Blazer
1982-2002
 Chevrolet Camaro
1977-1996
 Chevrolet Caprice
1977-1987
 Chevrolet El Camino
1977-1985, 1994-1996
 Chevrolet Impala
1983-1986
 Chevrolet K5 Blazer
1973-1983
 Chevrolet Malibu
1978-1988
 Chevrolet Monte Carlo
1976-1979
 Chevrolet Nova
1982-2004
 Chevrolet S10
1983-2005
 GMC Jimmy
1982-1990
 GMC S15
1985-1989, 1991-2000
 GMC Safari
1991-2004
 GMC Sonoma
1991
 GMC Syclone
2006-2010
 Hummer H3
2009-2010
 Hummer H3T
1988
 Isuzu Pickup
1991-2002
 Isuzu Rodeo
1977-1984
 Oldsmobile 98
1991-1994, 1996-2004
 Oldsmobile Bravada
1977-1984
 Oldsmobile Custom Cruiser
1977-1981
 Oldsmobile Cutlass
1978-1984
 Oldsmobile Cutlass Calais
1980-1983
 Oldsmobile Cutlass Cruiser
1978-1980
 Oldsmobile Cutlass Salon
1982-1984
 Oldsmobile Cutlass Supreme
1977-1985
 Oldsmobile Delta 88
1976-1979
 Oldsmobile Omega
1977-2002
 Pontiac Firebird

EXCEL Banner

Who is Excel?

Excel is a brand under Richmond that is best known for its high-quality drivetrain products for the automotive industry. They specialize in creating durable, high-quality differential components used both on the track and on the street. Today, they are the leading brand when it comes to differential components in the market.

Racer’s Brand Of Choice

The company offers premium differential kits and components that are used by many racers everywhere. Their rock-solid design aims to provide maximum performance and safety during extreme and tough driving conditions.

Your Drivetrain Component Experts

For more than 80 years, the company has provided quality aftermarket parts for different industries. It includes the agriculture, construction, marine, and automotive sector. They have a wide range of drivetrain products such as spools and mini spools, transmissions, ring and pinion gear, synthetic gear oils, and transmission fluids. They have a comprehensive list of products and even have parts for vehicles made from the 1940s up to the present.

State-of-the-Art Facility

To ensure that all their products come out the way they designed them, the company utilizes the latest and most advanced equipment available in the market. It allows them to create parts with precision cuts with very minimal tolerances.

Purchase  Excel Products At Vivid Racing

If you are in the market for quality drivetrain components for your vehicle, then Excel is the brand for you. Whether it is a classic car or a modern one, they would have the right set for you. To know more about Excel and what they can offer, visit Vivid Racing and check out their list of products that fit your specific needs.






Installation Instructions

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