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.installationGuidesInner{display:none;}Perfect For Gear Swaps. Ford Racing's Friction Modifier is a specially formulated additive to provide smooth operation of clutch-type limited-slip differentials, perfect for gear swaps. Legendary Ford Racing Quality. When you're adding performance parts to your Pony, you can't go wrong by installing parts from the folks that know it best. Ford Racing's legendary quality ensures years of hassle-free use. Application. Ford Racing Friction Modifier is recommended for use in 1979 to 2014 Mustangs and is compatible with other brands of gear oil. One bottle is required for rear ends equipped with Ford traction-lock units.
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