Distinctive large hexagon nut that retains gearbox rear sprocket to the large sleeve gear, using Left Hand thread. Price is Each
As always, an original Norton nut was used as a pattern from which these have been copied. Because of the size of the Hex, these nuts are often badly chewed of have come loose on the bike. Notice they have a left hand thread so are screwed on and tightened the opposite direction to most nuts. Once fitted a star shaped lock washer should also be fitted over them - we also sell these - item no 0271 and 0272.
Sorry not cheap, but Whit hex had to be milled and my manufacturer also had to have special tap made, hence price