Yes aftermarket. It is called gun drilled. The zerk fitting services the birf, no reason to open the plug on top to fill with grease.Started pulling off the dust cover, planning on using the terrain tamer spindle grease gun when I ran into this. Right under the dust cover. I'm sure it's aftermarket, but anyone know if this is for greasing the wheel bearings or goes all the way into the spindle? I haven't seen or heard of this but once again coming from the 70 series world.
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