A sample from the products for the Transmission include: Collar,25mm, Gear,c-5, Gear,m3/4, Pin, Shift Fork.
The thirty-two Cb750 Nighthawk 1992 (n) Canada / Mkh Transmission component parts are all listed in this schematic.
The O-ring,9.8x2.4 is the cheapest item from this partsfiche.