Carli - FORD F250/F350 Torsion Sway Bar 2.5" & 3.5" Lift 17+

On a stock Super Duty, the factory sway bar is nearly immobile and often overlooked. While the front coils and rear leaf springs get most of the attention, the factory sway bar acts as a rigid brace linking the axle to the frame. Any force on one tire transfers immediately across the axle, creating high-frequency chatter felt in the cab. Hitting a manhole cover or navigating an off-camber driveway can produce noticeable vibrations—this is the sway bar at work and the reason for many small-bump ride complaints.

Despite this, the factory bar is crucial for heavy trucks. Even with radius arms providing better sway control than a 4-link setup, a supporting spring rate is necessary to control body roll and keep the suspension composed. The factory bar is designed to handle maximum payload safely, such as a 3,500 lb cab-over camper on rugged terrain.

For trucks not regularly loaded to GVWR, the Carli Torsion Sway Bar optimizes ride quality by lightening the final spring link. Unlike removing the factory bar, which can compromise control, the Carli Torsion Sway Bar allows slight side-to-side differentiation before progressively engaging to maintain control as leverage is applied. On- or off-road, it provides a smoother, more composed ride with reduced chassis chatter and improved small-bump compliance.

Construction & Materials

The sway bar arms are made from solid 3/4″ cold-rolled steel. The bar is a custom-rate, heat-treated torsion bar passing through in-house machined, hard anodized billet aluminum drop brackets housing the bushings. 17-4 stainless preload bolts finish the assembly. Customers can choose a complete assembly with Stainless End Links or purchase the “UPGRADE” part as a direct-fit replacement for trucks already equipped with extended sway bar end links.

Compatibility & Performance

The Carli Torsion Sway Bar features drop brackets specific to 2.5″ and 4.5″ lift heights and works with Stainless Extended End Links designed for each lift. There are no disconnects or multiple bar holes; the rate is carefully tuned to complement Carli suspension systems. It enhances ride quality, maintains articulation, and achieves the ideal balance between control and comfort.