Speedway, Mustang 2 spindle nut kit. Part number 910-615074. This is a pair of nuts (!), keyed washers and split ('Cotter') pins - the ones you adjust your wheel bearings with. I ordered 4 off - as I owed someone a pair and guess what?? The part number is for a pair so I have 2x 'axle' sets left over. £8 each (pair) - believe me you wont get them here from Speedway for that money!
PM's please.