Air-filter choice for the 1981 CB900F depends on whether the original-style airbox remains fitted. The stock element and 54mm clamp-on pods are different configurations. Check the carburetor inlets, available clearance and required quantity before considering pods for a modified intake.
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Replace your DOHC CB's stock air filter with this Stock-Type Air Filter, replacing OEM #17211-425-000. Fits the 1979-82 CB750 family, CB750SC Nighthawk, CB900 family,...
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Replace the multi-use mounting rubber on your CB with this Mounting Rubber, replacing OEM #17245-107-010. Used in multiple positions depending on the bike: headlight...
1981 Honda CB900F Supersport · Air Filters Buying guide
Stock airbox or individual clamp-on filters
Honda specifies a paper air-filter system and 32mm VB-family carburetor venturis for this CB900F generation. The stock airbox element and 54mm clamp-on pods serve different installations. The venturi measurement must not be used as the pod mounting size.
If the original-style airbox is retained, compare the stock element and its reference with the fitted housing. The pod option is not a paper-element substitute inside that airbox. Identify the intake arrangement before choosing a filter simply for its finish or apparent shape.
A pod conversion needs a complete intake assessment
The black round pod requires a compatible 54mm mounting connection and enough room around the carburetors. Changing from the shared airbox alters the intake arrangement, so assess mixture, synchronization and throttle response. Do not assume that a larger main jet alone will resolve every running issue.
Buying questions
Can I choose a pod from the carburetor’s 32mm bore size?
No. That is the venturi measurement. Measure the outside of the actual air inlet for the pod’s mounting connection; the featured pod specifies 54mm. Also check the clamping area and surrounding clearance, particularly with replacement carburetors.
Will pods work with the existing carburetor settings?
Do not assume so. Changing the original airbox arrangement calls for checking mixture, synchronization and throttle response for the actual engine and exhaust. There is no single jet change established by the filter listing.
Can the stock airbox element and washable pod use the same care routine?
Follow each filter’s own instructions. The black round pod is washable and supplied dry, with suitable filter oil optional as described. That does not establish that the stock-style airbox element should be washed or oiled the same way.
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.