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Richmond Gear 6901611 Ring and Pinion Set 4.33:1 Ratio Ford 9 Inch

(Ford F-150 1975-86, Mustang 1965-73, Bronco 1966-86, Thunderbird 1955-79, Maverick 1970-77, Galaxie 500 1962-74, F-100 1975-83 + 23 more models)

Part of: Richmond Gear Excel Differential Ring and Pinion Set

Other options in this family: Richmond Gear F9411 Richmond Gear 4900391 Richmond Gear 12BC373T Richmond Gear 6903041 Richmond Gear 7900601

Manufacturer

Picture for manufacturer Richmond Gear

Part Number

6901611
5 reviews
Sale Price

$357.34

In Stock (7)

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Usually delivered within 2 days

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Product Details

The Richmond Gear 6901611 is a high-performance ring and pinion gear set featuring a 4.33:1 ratio designed specifically for Ford 9 inch differentials with a 28-spline pinion. This matched gear set includes a 39-tooth ring gear and 9-tooth pinion, engineered to deliver improved acceleration and torque multiplication for street performance and racing applications.

Key Specifications:

  • Gear Ratio: 4.33:1
  • Application: Ford 9 inch differential
  • Pinion Spline Count: 28
  • Ring Gear Teeth: 43
  • Pinion Teeth: 9
  • Ring Gear Bolts: 10-bolt pattern
  • Ring Gear Diameter: 9.000 inches
  • Rotation: Standard

Performance Features:

  • Computer-controlled manufacturing with 1,000th of an inch precision
  • Heat-treated construction for exceptional strength and durability
  • Matched and numbered ring and pinion pair for optimal gear mesh
  • Ground pinion threads for trouble-free installation
  • Engineered for both street performance and racing applications

Richmond has been the leading manufacturer of professional quality, high-performance ring and pinion sets for over 80 years, with the Double Diamond signifying the highest quality gears in the racing industry. This gear set is ideal for enthusiasts seeking improved off-the-line acceleration and enhanced pulling power for their Ford 9 inch-equipped vehicle. Professional installation with proper setup tools and bearing kit is recommended.

Products specifications

Fits

Ford F-150 1975-86, Mustang 1965-73, Bronco 1966-86, Thunderbird 1955-79, Maverick 1970-77, Galaxie 500 1962-74, F-100 1975-83, Fairlane 1957-70, Ranchero 1957-79, Torino 1968-76, Galaxie 1959-67, Gran Torino 1972-76 + 18 more models

Calculator

Gear Ratio Calculator

Cover Bolts

10

Installation Kit Included

No

Pinion Gear Teeth

9

Pinion Shaft Diameter (in)

1.313 in.

Pinion Spline Count

28

Quantity

Sold as a set.

Ring and Pinion Ratio

4.33:1

Ring Gear Bolts

10

Ring Gear Diameter (in)

9.000 in.

Ring Gear Rotation

Standard

Ring Gear Teeth

39

Tool

Transmission Lookup

Ring Gear Bolt Quantity

10

Ring and Pinion Gear Ratio

4.33

Pinion Shaft Diameter

1.313

Differential Case Design Type

Ford 9

Pinion Gear Tooth Quantity

9

Ring Gear Material

8620 Steel

Cover Bolt Quantity

Dropout

Ring Gear Tooth Quantity

39

Ring Gear Diameter

9

Prop 65

WARNING: Cancer - www.p65warnings.ca.gov

Position

Rear

Best price on the web for this item.

Straight forward the part came in time and the fit was just as the original

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

Very fast process.

So far so good.

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