54 Hustler Raptor SD & Flip-Up Mulch Kit (124455). Kit, Mulch 54 (blades included) open deck. Genuine Excel/Hustler Turf Equipment 54 Raptor SD Mulch Kit Accessory (124455)Fits specific 54IN Raptor SD and Flip-Up models with OPEN Deck – 2019. Verify your model below before ordering. This kit fits 2019 with OPEN decks. Earlier models feature standard decks and require a different mulch kit. Later models feature alternative decks. Set of 3 – Mulching Blades (797704). All parts and instructions.