1978 Honda CB750A — Maîtres-cylindres et pièces de réfection

The rebuild description gives the application and Honda replacement reference but does not itemize the kit’s individual pieces. Confirm the required contents before ordering, particularly when a separate diaphragm or rubber part is also needed for the inspected repair.

Yes. Both the 14mm assembly and the 5/8-inch assembly name replacement cap 29-0054. That shared cap reference identifies a reservoir part; it does not establish that their different-size pistons or internal rebuild parts are the same.

The 14mm and 5/8-inch listings state that 1977–78 CB750A applications need a separate hydraulic brake-light switch. Review that requirement with the existing wiring and brake configuration before choosing. This guide does not infer electrical compatibility or a stock piston size from their appearance.