Ford Racing pinion bearing retainers are available in cast iron or high - strength aluminum for long - lasting durability. These pinion bearing retainers are direct fit and functional replacements for your worn or damaged originals. They're designed for heavy - duty applications to help keep your vehicle going strong - - so you can get the most out of your ride. Each pinion bearing retainer comes with a large rear cup andor a small front cup to best suit your application. Equip your pony car only with the best - - Ford Racing parts.