The reason is simple. For solid axle designs sometimes also called live axle or beam axle there are a variety of suspension types used.
Axial Racing Axle And Suspension Designs Explained
Independent rear suspension vs solid axle. An independent rear suspension doesnt necessarily perform better than a well designed solid axle setup. These have gotten me buy before building a 31 spline setup httpswww. Solid axles are also more durable than most ifs axles and can be easily changed in comparison making axle repairs on off road trucks no problem. Whats the difference between independent suspension and solid axle suspension. With an independent rear suspension the differential housing itself will only hold the ring gear and differential carrier. This axle design has been around longer and is implemented on many work vehicles.
But in any case both wheels will be connected to a single axle housing that runs the span of the vehicle. It all comes down to how a car shifts its weight backward when it accelerates. Alloy usa hardened axles for solid rear 28 spline here. A solid pipe connects both rear wheels. But where they excel in strength they lack in flexibility. A solid axle is much simpler and generally uses fewer parts while the independent rear axle is a bit more complex.
The heart of any off road suspension setup on a 4wd vehicle is the axle in the sense that any suspension system must accommodate that axles design. Verify fitment when purchasing because 94 98 is shorter than 99 04. Cons of solid axles. Solid rear axles are just that. At the heart of an independent rear suspension is an axle that is totally unique to the setup. This means there are fewer moving parts such as no stub axles with u joints which makes.
This is especially true for vehicles with a lot of front weight bias like a mustang. Other than complaints about a rough ride the only real problem with solid axles is their weight and slightly less front ground clearance.