One of the most significant changes made to the 2024 Jeep Wrangler is also one of the most difficult to spot: The new Wrangler's rear axle is now a full-float Dana 44 HD. Why does this matter? First, ...

Why has the Ford 9-inch axle become the go-to axle for Ultra4 racing and hardcore use? It has a lot to do with the evolution of the axle assembly from the factory-built unit, to custom-fabricated axle ...

The Chevy 12-bolt axle shaft (left) is tapered; the Ford 9-inch shaft is the same diameter throughout its length, except for the short section just after the spline end. This makes it easy to narrow ...