My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Richmond Gear 6900671 Ring and Pinion Set 4.86 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 F88410 Richmond Gear 4900391 Richmond Gear 12BC373T Richmond Gear 6903041

Manufacturer

Picture for manufacturer Richmond Gear

Part Number

6900671
4 reviews
Sale Price

$377.81

2 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Richmond Gear 6900671 is a high-performance ring and pinion gear set designed for Ford 9-inch rear axles. This street gear set features a 4.86:1 gear ratio, providing excellent acceleration and torque multiplication for street performance and drag racing applications.

Key Features:

  • 4.86:1 gear ratio for aggressive acceleration
  • Designed specifically for Ford 9-inch rear differentials
  • Manufactured from high-quality alloy steel with precision machining
  • Heat-treated for maximum strength and durability
  • Ideal for street performance, bracket racing, and weekend warrior applications
  • Lapped and tested to ensure proper tooth contact pattern

Richmond Gear is known for producing premium quality ring and pinion sets that deliver reliable performance under demanding conditions. This gear set is engineered to provide smooth, quiet operation while handling the rigors of performance driving. Professional installation with proper setup and break-in procedures is recommended to ensure optimal performance and longevity.

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

7

Pinion Shaft Diameter (in)

1.313 in.

Pinion Spline Count

28

Quantity

Sold as a set.

Ring and Pinion Ratio

4.86:1

Ring Gear Bolts

10

Ring Gear Diameter (in)

9.000 in.

Ring Gear Rotation

Standard

Ring Gear Teeth

34

Tool

Transmission Lookup

Pinion Gear Tooth Quantity

7

Differential Case Design Type

Ford 9

Ring Gear Bolt Quantity

10

Ring Gear Diameter

9

Pinion Shaft Diameter

1.313

Ring and Pinion Gear Ratio

4.86

Ring Gear Tooth Quantity

34

Cover Bolt Quantity

Dropout

Ring Gear Material

8620 Steel

Prop 65

WARNING: Cancer - www.p65warnings.ca.gov

Position

Rear

Excellent service, incredibly fast shipping and delivery. Would DEFINITELY do business with again.

Easy to deal with, lowest price and included quick shipping.

Thanks

Amazing prices and amazing shipping speed! Best all around. Will be ordering more soon!

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy