MOD AE B7 (Narrow Pivot) / 6 Series Skinny Shiny Steel Puck Bones 73mm Arm Compatible (2) #21531

Compatibility:  Use on B7 if you have a really narrow pill placement and bones are coming in contact with the outdrive face on compression ONLY TO BE USED with Gear Diff AE 6.4 /.3 Standard 73mm arms and Wide Pivot (OEM Components) for the Gear Diff, Not MOD / MIP Ball Diff Puck Compatible These bones were sized specifically for the #21532 Gear Diff Outdrives.   Advantages: Replaceable drive pin puck components for keeping a drivetrain always fresh Approved for all high traction surfaces Carpet/Turf/Street Features: Skinny Steel Bones for lighter weight and ultimate durability  Support Parts:  17045 - 1.5 Pucks Rebuild