Here is a Sway Away product description from their website:
Quote:
Truck Torsion Bars
Sway-A-Way torsion bars are designed specifically for lifted and lowered trucks and SUV?s that demand superior suspension performance.
The bars are manufactured from aircraft alloy steel have a 20% - 30% increase in spring rate over stock bars. Sway-A-Way torsion bars eliminate hard bottoming when offroading or towing heavy loads, improve vehicle handling on the street, and provide a more consistent spring rate for better vehicle control.
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