Dana 25 27 30 10 Bolt Polished Aluminum Rear End Differential Rear Cover The inner flex ball is

The inner flex ball is 8620 steel

By removing any centrifugal application of the direct clutches

Speedmaster throttle return spring kits come complete with chrome plated brackets

The Speedmaster water pump pulley shim kits contain one 1mm spacer

Dana 25 27 30 10 Bolt Polished Aluminum Rear End Differential Rear Cover The inner flex ball isAdd that chrome look to your axle without having to worry about rust, with these Speedmaster polished aluminum differential covers. They are made from cast aluminum with thick gasket rails to resist oil leaks, and feature cast in ribs for added strength and heat dissipation. The covers have a highly polished finish and include gasket and mounting bolts for a complete installation.