510-523 SuperLite 17 Head Cushion Foam Replacement Kit 510-523 Part # Description Qty. 510-610Head Cushion Foam, Top1 510-611Head Cushion Foam, Left1 510-612Head Cushion Foam, Right1 510-613Head Cushion Foam, Right1 510-523_SL_17_Head_Cushion_Foam_Replacement_Kit.pdf