6. The Offroad Design shackle flip bracket (right) provides 4 inches of lift by positioning the ends of the leaf springs downward 8 inches further than the stock shackle bracket (left). This will alter the pinion angle a bit, and in some cases may require correction. Our truck has a 3-degree wedge installed under the leaf pack that we will remove when making another upgrade later on. This should put our pinion angle close to correct.