E30 12mm Diff SpacersFits: All E30 Non M, E30 M3. Benefits: Lowers the diff when installing subframe raising bushings Material: 6061 T6 Aluminium Anodised Purple If you're looking to raise your E30's subframe to correct static camber or to improve roll centre geometry then these spacers are a must. Being 12mm tall these spacers will lower the diff back down to its original position so that the rear diff bush lines back up with it's chassis mount.