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1980 Honda CB650 — Composants et amortisseurs de direction

Identify the steering bearings already fitted to your 1980 CB650 before ordering a conversion kit. The tapered kit and top stem hardware are separate products. Check whether previous work changed the bearing arrangement or stem, then match the repair parts to that actual assembly.

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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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1980 Honda CB650 · Steering Bearing Conversion Buying guide

Choose bearings and top hardware from the fitted stem

The kit includes upper and lower tapered bearing races. The separate stem nut and washer address external hardware, so inspect their condition rather than assuming a bearing package renews the whole steering assembly.

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.Voir la pièce Honda CB Steering Stem Washer ~ Replaces 90503-425-000 Steering stem washerIndividual washer for the stem nut; reference 90503-425-000.Voir la pièce Honda CB Steering Stem Nut ~ Replaces 90304-425-000 Steering stem nutIndividual replacement stem nut; washer supplied separately.Voir la pièce

Confirm the intended bearing arrangement

This is a tapered-roller conversion kit with upper and lower races. Check the current assembly and use the kit instructions with the service manual. A motorcycle already fitted with modified steering parts needs the interfaces checked before a stock-application kit is selected.

Order nut and washer individually

The washer references 90503-425-000 and the nut references 90304-425-000. They are separate individual products. Compare the retained hardware and its condition before purchase; a new bearing kit does not establish that damaged threads can be reused.

Ordering 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 fit the kit with a non-original stem?

Verify the stem and frame bearing interfaces first. The listed CB650 application does not establish compatibility with every swapped front end or modified stem.

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