The twin I-beam front suspension is a type of independent-looking setup used on many Ford trucks and some cars in mid-20th-century designs. In essence, each front wheel is mounted to its own I-shaped beam, and the two beams are connected to the frame so that each wheel can respond to bumps independently.. Few suspension designs are as rare today as Ford's Twin-I-beams, a 55-year answer to the call for a comfortable work-truck.
In the 1960s, Ford revolutionized the game with a new front suspension that would change the ride for trucks. Here's what made the twin I-beam so brilliant.. Ford described it as: Ford's revolutionary new Twin-I-Beam suspension gives you two front axles - two rugged I-beam axles to share the abuse of the roughest going! And because of forged steel I-bean construction - just like big-truck axles use - they'll stand up in severe service!