a spreader assembly for a combine harvester is disclosed , the assembly including a pair of disks configured to be rotated such that chaff material dropped onto the disks is spread about the combine harvester , wherein each disk is operably connected to its own motor and a spreader frame assembly . the spreader frame assembly includes a first side support pivotably connected to a frame of the combine harvester , a second side support pivotably connected to the frame of the combine harvester , and at least one disk support configured to support at least one of the pair of disks . the spreader frame assembly further defines an opening configured such that when the combine harvester is windrowing material , no portion of the spreader frame assembly interferes with the flow of windrowing material .