# Ford 9-Inch Rear End Still America's Favorite

> Ford's 9-inch rear axle remains popular decades after production ended for drag racing and off-road use.
- Title: Ford 9-Inch Rear End Still America's Favorite · Jalopnik
- Summary: Ford's 9-inch rear axle remains popular decades after production ended for drag racing and off-road use. Ford's 9-inch rear axle is still widely used in drag…
- Keywords: ford, 9-inch rear end, drag racing, off-road vehicles, mustang, rear axle, nascar, cars, culture, 9-Inch, Rear, End
- Source: Jalopnik — https://jalopnik.com/2277412/why-ford-9-inch-differential-rear-end-so-popular
- Author: Chris Stark
- Published: 2026-10-05T22:25:00+00:00
- Read time: 1 min
- Topics: ford, 9-inch rear end, drag racing, off-road vehicles, mustang, rear axle, nascar, cars, culture
## Why the Ford 9-Inch Matters
The Ford 9-inch rear axle is the simplest solid rear axle for rear-wheel-drive cars, housing both differential and axles in one unit.
## Racing History
Racers adapted heavy-duty truck axles to hot rods in the early days of drag racing because they could withstand engine abuse without disintegrating.
## Ford's 1957 Breakthrough
The Ford 9-inch axle debuted in 1957 passenger cars and light trucks, offering strength without the weight of truck axles.
## Why It Stands Out
The 9-inch has three bearings supporting the pinion gear, a 9-inch ring gear, and a detachable third member for easy gear ratio swaps.
## Adaptability Wins
The 9-inch can retrofit into vehicles not originally equipped, with sheet-metal center sections easier to weld than cast-iron units.
## Why It Endures
Aftermath companies keep making parts for the 9-inch, and it remains popular in drag racing and off-road applications despite being discontinued in 1986.
## Key takeaway

Ford's 9-inch rear axle is still widely used in drag racing and off-road vehicles despite being discontinued in 1986.