Have you leveled or lifted the front end of your SuperDuty? In most cases, especially with standard leveling kits, they're missing a key component, lowering the front bump stops. Having the bump stops in their proper vertical location is critical in ensuring you don't overcompress the suspension. Kryptonite's precision billet spacer kit takes the guesswork out of limiting your up travel. Featuring a direct fit install, premium zinc plated hardware, and guaranteed for life,  you won't find a better option on the market.