Lawn Mower Grass Mulching Attachment w/Blade For John Deere 54C 54X 54D #BM20827. The mulching attachment allows converting the mower so it can be used to mulch grass or leaves. The mulch plug is made up of two halves. Most side-discharge and material collection jobs can be done by only removing the right half, leaving the left half in place. The mulching attachment is designed to convert the mower so it can be used to mulch grass or leaves. It makes mulching more efficient and promotes the continued health of the grass. Professional Installation is highly recommended. Blades Surface Finish: Electrophoresis. For 54C 54X 54D Mowers controls. GX255, GX325, GX335, GX345, GX355. X340, X465, X475, X485, X485SE, X495, X500, X520, X530, X534, X540, X575, X595, X595SE. X700, X720, X724, X728, X740, X744, X748. Z425 EZ TRAK, Z445 EZ TRAK. 2210, 4010, 4110, 4210, 4310, 4410, 4510, 4610, 4710. This kit does not fit older style 54 decks. Mulching Kit & Blades(as picture shows).