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1979 Honda CB650 Steering Bearings & Hardware

Before ordering steering parts for a 1979 CB650, identify the steering stem and bearings now installed. The tapered bearing conversion kit addresses the bearing assembly, while the top stem nut and washer are separate hardware pieces. A changed front end needs an exact match.

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Honda motorcycle parts

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Honda CB750 CB650 CB550 CB450 CB400 steering bearing kit (2)

Honda CB Steering Bearing Kit (2)

$69.95 USD
28-2011
Upgrade your steering bearings with this Steering Bearing Kit. Tapered roller steering bearing conversion kit, superior to OEM quality with 10X the contact area...
Honda CB750 CB650 CB550 CB450 CB400 steering bearing kit

Honda CB Steering Bearing Kit

$69.95 USD
28-2011
Upgrade your steering bearings with this Steering Bearing Kit. Tapered roller steering bearing conversion kit, superior to OEM quality with 10X the contact area...
Honda CB1100 CB1000 CB900 CB750 steering stem washer 90503-425-000

Honda CB Steering Stem Washer ~ Replaces 90503-425-000

$5.80 USD
73-1127
Complete your steering assembly with this OEM-spec Steering Stem Washer, engineered for secure and precise fitment. A vital component when servicing or rebuilding your...
Honda CB1100 CB1000 CB900 CB750 CB700 steering stem nut 90304-425-000

Honda CB Steering Stem Nut ~ Replaces 90304-425-000

$8.95 USD
73-1128
Ensure your front end stays tight and aligned with this high-quality Steering Stem Nut. Designed to match the factory OEM specifications, this nut is...
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1979 Honda CB650 · Steering Bearings & Hardware Buying guide

Check bearing conversion and stem hardware separately

The kit provides upper and lower tapered-roller bearings with matching races for one steering head. It is distinct from the external stem nut and washer, so inspect both the bearing condition and retained hardware.

Parts to consider

Honda CB Steering Bearing Kit Tapered steering bearing kitJapanese-made tapered-roller conversion kit supplying upper and lower bearings with matching races for one steering head.View part Honda CB Steering Stem Nut ~ Replaces 90304-425-000 Steering stem nutIndividual replacement stem nut; washer supplied separately.View part Honda CB Steering Stem Washer ~ Replaces 90503-425-000 Steering stem washerIndividual washer for the stem nut; reference 90503-425-000.View part

Identify the bearing arrangement first

The featured kit is a tapered-roller conversion rather than a loose replacement ball or individual race. Compare the motorcycle’s existing arrangement and follow the kit instructions with the correct service procedure. A model label alone cannot identify a previously modified steering assembly.

Order top hardware by condition

The stem nut replaces reference 90304-425-000; the washer replaces 90503-425-000. They are sold individually and separately from one another. Inspect threads and mating surfaces before deciding what to renew with the bearing work.

Buying questions

Does tightening the upper stem nut set the bearing adjustment?

The stem-nut guidance calls for setting bearing preload by the correct service procedure first, then fitting the correct washer and tightening the upper nut without disturbing that adjustment. Check for smooth steering with no notchiness, binding or play afterward; extra top-nut tightening is not a substitute for diagnosis.

Can an ordinary washer substitute if its hole fits the stem?

The specified washer’s thickness and seating surface affect the upper hardware’s clamping. Compare the original arrangement and reference 90503-425-000 rather than choosing by hole diameter alone. The matching nut and washer are separately supplied, so inspect both during steering service.

Can I use the kit with a swapped steering stem?

Do not assume compatibility. Confirm the stem and frame bearing interfaces, then obtain a verified match for that combination before ordering the original-model conversion kit.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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