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1980 Honda CB900C Custom Carb Rebuild & Jetting

Choose carburetor parts for the repair you have identified on your 1980 CB900C Custom. The basic kit handles sealing and float-needle replacement for one carburetor. Pilot jets and main-jet assortments need separate size decisions based on the installed carburetors and tune.

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Honda CB1000 CB900 CB750 performance main jet kit

Honda CB1000 / CB900 / CB750 Performance Main Jet Kit

$39.95 USD
48-2111
Tune your CB to match your engine mods with this Performance Main Jet Kit. Includes a total of 16 main jets for Keihin carbs....
Honda CB1100 CB1000 CB900 CB750 float bowl gasket

Honda CB1100/CB1000/CB900/CB750 Float Bowl Gasket

$9.50 USD
20-8031
Replace your DOHC CB float bowl gasket with this Float Bowl Gasket (O-ring). Broad fitment across the 1979-82 CB750 family, CB750SC Nighthawk, CB900/CB1000/CB1100, CB650...
Honda CB1000 CB900 CB750 CB700 ultimate performance main jet kit

Honda CB1000 / CB900 / CB750 / CB700 Ultimate Performance Main Jet Kit

$64.95 USD
48-2112
Cover every tuning scenario with this Ultimate Performance Main Jet Kit. Includes a total of 44 main jets for Keihin carbs. Use this jet...
Honda CB1100 CB1000 CB900 CB750 CB700 carb float needle 16155-413-751

Honda CB Carb Float Needle ~ Replaces 16155-413-751

$8.95 USD
48-5011
Replace your DOHC CB float needle (only) with this Float Needle, replacing OEM #16155-413-751.Key Features• Float needle (only)• Replaces OEM #16155-413-751Fitment / Compatibility• Honda...
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Honda CB900 CB750 CB650 press in type pilot jet set size #38 (pk 4)

Honda CB900 / CB750 / CB650 Press In Type Pilot Jet Set ~ Size #38 (Pk/4)

$15.26 USD
73-1002
Refresh your low-speed performance with this Press-In Type Pilot Jet Set of 4 in size #38. Pilot jets handle your idle and low-speed operation...
Honda CB1100 CB900 CB750 CB650 carb rebuild kit

Honda CB1100 / CB900 / CB750 / CB650 Carb Rebuild Kit

$24.95 USD
48-1402
Rebuild your 1980-82 DOHC CB750, CB900, CB1100F, or 1981-82 CB650 carb with this Carb Rebuild Kit. Contains float bowl gasket, float needle, and O-rings.Note:...
Honda CB900 CB750 CB650 press in type pilot jet set size #35 (pk 4)

Honda CB900 / CB750 / CB650 Press In Type Pilot Jet Set ~ Size #35 (Pk/4)

$15.82 USD
73-1001
Refresh your low-speed performance with this Press-In Type Pilot Jet Set of 4 in size #35. Pilot jets handle your idle and low-speed operation...
Honda CB1000C CB900C CB900F carburetor rebuild kit

1980-83 Honda CB1000C / CB900C / CB900F Carburetor Rebuild Kit

$32.95 USD
48-1982
Rebuild your CB900 or CB1000C carb with this Carb Rebuild Kit. Contains float bowl gasket, O-rings, float needle, main jets (#68 and #105), pilot...
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Honda CB900 CB750 CB650 press in type pilot jet set size #42 (pk 4)

Honda CB900 / CB750 / CB650 Press In Type Pilot Jet Set ~ Size #42 (Pk/4)

$15.26 USD
73-1003
Refresh your low-speed performance with this Press-In Type Pilot Jet Set of 4 in size #42. Pilot jets handle your idle and low-speed operation...
Honda CB1000C CB900C CB900F deluxe carburetor rebuild kit for 1980-1983 applications

83 Honda CB1000C / 80-82 CB900C / 81-82 CB900F Deluxe Carburetor Rebuild Kit

$34.95 USD
48-0831
This deluxe aftermarket carburetor rebuild kit provides a high-content selection of sealing, fuel-control, jetting, and mixture-adjustment components for servicing one original carburetor on the...
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1980 Honda CB900C Custom · Carb Rebuild & Jetting Buying guide

Restore the carburetor’s condition before changing its tune

The original CB900C carburetors have separate primary and secondary main-jet circuits as well as low-speed metering. A sealing kit, a pilot-jet set and a main-jet assortment do different jobs. Read the carburetor identification and establish the fault before deciding which parts to replace.

Parts to consider

Honda CB1100 / CB900 / CB750 / CB650 Carb Rebuild Kit One-carb sealing kitFloat-bowl gasket, float needle and O-rings; each kit rebuilds one carburetor.View part Honda CB900 / CB750 / CB650 Press In Type Pilot Jet Set ~ Size #35 (Pk/4) Number 35 pilot-jet setFour #35 press-in pilot jets; confirm the exact fitted jet body and repair method before choosing them.View part Honda CB1000 / CB900 / CB750 Performance Main Jet Kit 16-piece main-jet kitFour each of numbers 105, 110, 115 and 120 for compatible Keihin carburetors.View part

A sealing repair is not a jetting prescription

The basic kit supplies the bowl gasket, float needle and O-rings for one carburetor. Check the needle seat and the actual leak location before buying it. Main jets, pilot jets, air-cutoff parts and pump components are separate decisions; a rough idle does not establish that every metering part needs replacement.

Keep primary, secondary and pilot jets separate

The main-jet assortment supplies #105, #110, #115 and #120, four of each. The #35 press-in pilot set serves a different circuit. Match the exact jet design and existing carburetor before choosing a size, and do not treat a larger number as an automatic improvement for a modified exhaust or filter.

Buying questions

Can I choose a main jet only by matching its number?

No. Confirm the correct main-jet circuit, thread, body and carburetor application. Honda distinguishes primary and secondary mains; a pilot jet or another jet family with a similar number is not interchangeable.

Should press-in pilot jets be removed during every rebuild?

Do not make removal automatic. Confirm the actual jet design, clean and assess the low-speed passages, and have a carburetor specialist determine whether replacement is needed and how that body can be serviced without damage. A product listing is not a removal procedure.

Does a larger main jet fix an intake leak or overflowing bowl?

No. Restore intake sealing and correct float-valve faults first. Jet changes alter metering and cannot repair those defects; final selection must suit the actual carburetors, intake, exhaust and measured running condition.

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