Confirm the exact clutch or rotor fastening position before selecting this genuine Honda 16mm lock nut for a 1980 CB900C Custom. The nut is sold individually and has several superseded references. Use the fitted assembly and applicable parts reference to establish the correct location.
The listed genuine Honda nut is reference 90231-KCS-651. Its broad clutch and oil-filter-rotor description should be narrowed to the actual assembly being serviced rather than applied to every engine location.
The product names several superseded Honda references, but a supersession list alone does not identify where your removed nut belongs. Compare the actual part and the service or parts documentation for the fitted assembly before adding the replacement to the order.
Keep purchase scope precise
This is one hardware part rather than a clutch rebuild package or a tool. Assess the mating threads and any associated locking components using the correct service procedure. Do not assume a broad rotor description establishes an original centrifugal oil-filter arrangement on this motorcycle.
Buying questions
Is this nut genuine Honda or a replica?
The product identifies it as genuine Honda, reference 90231-KCS-651. Confirm the exact application and position against the fitted assembly before ordering.
How is the nut supplied?
Individually. The source says one is commonly required where used, but that is not a complete-motorcycle quantity; count only the verified positions being serviced.
Can I select it solely because the thread is described as 16mm?
No. Match the part reference and assembly position as well. The stated size alone does not establish the complete thread, shape or locking requirements of another nut.
Vous ne savez pas quelle pièce choisir ?
Envoyez-nous le modèle et l’année de votre moto, des photos de la pièce actuelle et les détails de toute modification par rapport au montage d’origine.