Twin I-Beam & Equal Length I-Beam Long Travel Suspension Guide | Giant Motorsports

What Is Twin I-Beam Suspension?

Twin I-beam (TIB) suspension is a front suspension design used by Ford on F-series trucks and Broncos from the early 1970s through 1996. Instead of a solid front axle or A-arm coilovers, Ford mounted each front wheel on its own independent I-beam that pivots from a radius arm — one beam on the driver side, one on the passenger. This gave Ford trucks independent front suspension with a relatively simple, durable design that could handle heavy loads and rough terrain.

The downside: as the beams droop and compress, the wheel moves in an arc — causing the tire to scrub in and out. The further the beam droops, the worse the scrub. This limits how much travel you can get from the stock setup before the geometry gets unmanageable.

Equal-Length I-Beam: The Long Travel Upgrade

Giant Motorsports equal-length I-beam kits solve the scrub problem by replacing the stock twin I-beam setup with longer beams of equal length. By making both beams the same length and positioning the pivot points correctly, wheel scrub is dramatically reduced — allowing much greater suspension travel without the handling problems of the stock setup.

Our prismatic all-plate beam design eliminates tubing entirely. Three 3/16″ plates form a triangular prismatic cross-section — substantially stronger than traditional tube-and-plate I-beam designs. Dana 44 spindles upgrade your front axle strength at the same time.

Bronco / F-150 Equal Length I-Beam Kit (click to enlarge)

I-Beam Kits by Vehicle

Ford F-150 & Bronco (1980-1996)

Ford Ranger

Giant Motorsports Ranger I-Beam Long Travel Kit (click to enlarge)

Ford Super Duty & Expedition/Excursion 2WD

Toyota Trucks

Toyota I-Beam Conversion Kit 1989-1995 (click to enlarge)

Chevy C10

Steering — Crossover Swingers

Every equal-length I-beam setup requires crossover steering to correct bump steer geometry. Giant Motorsports supplies swingers for every truck we build kits for.

Engine Cage — Required for Coil-Over Shocks

Running coil-over shocks on your front I-beam suspension requires an engine cage to mount the shocks. Giant Motorsports builds cages for F-150, Bronco, Ranger, Explorer, and Super Duty.

Shocks

Build It Yourself

Questions? Call Giant Motorsports Direct.

Every kit is designed and built in-house. Call or text with your truck, year, and build goals — we’ll tell you exactly what you need.

📞 714-265-1450   [email protected]

Giant Motorsports — High Performance Off Road — Anaheim, CA