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

Yukon Gear & Axle YDAF9-411YGL-31 Ford Dropout Assembly with Grizzly Locker Ratio Spline Differential - 9in 4.11 31

(Ford F-150 1975-87, Mustang 1965-73, Bronco 1966-86, Thunderbird 1955-79, Maverick 1970-77, Galaxie 500 1968-74, F-100 1957-83 + 16 more models)

Manufacturer

Picture for manufacturer Yukon Gear & Axle

Part Number

YDAF9-411YGL-31
8 reviews
Sale Price

$1,798.97

Estimated ship date Monday, November 23

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 Yukon Gear & Axle YDAF9-411YGL-31 is a complete dropout assembly specifically engineered for Ford 9-inch differentials. Each unit is professionally assembled by expert Yukon technicians, arriving fully shimmed and backlashed to precise specifications for immediate installation. This assembly is upgraded with a Yukon Grizzly Locker, providing automatic locking differential performance for maximum traction and reliability in demanding off-road and performance applications.

Key Features:

  • Complete dropout assembly ready to install—no additional shimming or setup required
  • Upgraded with Yukon Grizzly Locker for automatic locking traction
  • 4.11:1 gear ratio for improved acceleration and towing capability
  • 31-spline axle shaft compatibility for increased strength
  • Precision-machined gears backlashed to factory specifications
  • Designed for Ford 9-inch differential housings

What's Included:

  • Fully assembled dropout carrier with ring and pinion gears
  • Yukon Grizzly Locker installed and pre-loaded
  • All internal bearings, shims, and hardware

Installation Notes:

  • Yoke sold separately—not included with assembly
  • Compatible with 31-spline axle shafts only
  • Professional installation recommended for proper setup

This dropout assembly eliminates the guesswork and time-consuming setup process, making it an ideal solution for enthusiasts upgrading their Ford 9-inch differential with lower gearing and automatic locking capability.

Products specifications

Fits

Ford F-150 1975-87, Mustang 1965-73, Bronco 1966-86, Thunderbird 1955-79, Maverick 1970-77, Galaxie 500 1968-74, F-100 1957-83, Fairlane 1957-70, Ranchero 1957-79, Falcon 1960-70, Galaxie 1959-67, Gran Torino 1972-76 + 11 more models

Prop 65

Yes

My experience was great

Was bothered about the shipment coming with a lot of damage to the box and it had foot prints all over it. I reached out with concern and was told I could return it but will be charged to restock/service. This is uncool considering the condition it arrived in from the warehouse or etc.

Great customer service!!! fantastic pricing!!! quick delivery!!! Highly recommended thmotorsports.com!!!

Very easy and accessible site.

Easy to use and great service and fast shipping

No Hassle

Shopping experience was good, but the picture does not match the item. Leads to confusion.

Excellent service!

Share icon
Return Policy
Returns are easy at THMotorsports

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