About this part

2.5-Inch Front Component Box with Coil Springs, Ford Super Duty, fitment-checked

Coil springs rather than spacers, plus a track bar bracket to re-center the axle — the more thorough route to 2.5 in. on a Super Duty front end. Diesel models only, and the Tremor trim package is excluded.

Raising a solid front axle 2.5 in. pulls it sideways relative to the frame, which is why this box includes a track bar bracket alongside the coil springs. Replacing the spring rather than spacing it also means the rate changes, which suits a diesel truck carrying weight over the front. The exclusions are the usual pair for this family: gas engine models do not fit and the Tremor trim package is out. Coverage is the 2017-2025 F-250 and F-350 Super Duty in 4WD. 68.4 lb boxed.

The fitment-first store