VintageCB750 Supplying CB Riders Since 2010

About Us Why Us? Reviews Shipping Info Returns Contact Us
Wish Lists
0 My Cart

Your cart is currently empty.

Browse all parts
Total (USD): $0.00
View cart
Menu
Search
Wish
Cart 0
My motorcycle Choose your Honda CB model

Search parts

Searching all Honda CB parts

Example: brake pads or oil filter.

1980 Honda CB650C Custom Steering Bearings & Stem Hardware

A steering rebuild on the 1980 Honda CB650C Custom can call for a bearing conversion, stem hardware or both. Identify the existing arrangement before ordering, and keep the upper and lower bearing kit separate from the individual stem nut and washer.

Close ×
Your saved bike Choose your Honda CB model

Shop By Category

Most orders ship same or next business day Fitment guarantee Listed for your exact model and year? We’ll make it right if it doesn’t fit as described. Mechanic-backed support Ask our team for help choosing the right Honda CB part.
Currently viewing Steering Hardware & Dampers

Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

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...
compare

1980 Honda CB650C Custom · Steering Bearings & Hardware Buying guide

Choose the bearing kit and stem hardware by repair scope

The tapered bearing kit serves the upper and lower bearing positions. The stem nut and washer have their own replacement references and are sold individually, allowing you to replace the hardware your inspection actually calls for.

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 stem nut replacing reference 90304-425-000. Washer sold separately.View part Honda CB Steering Stem Washer ~ Replaces 90503-425-000 Steering stem washerIndividual washer replacing reference 90503-425-000; the stem nut is a separate part.View part

Separate bearing conversion from fastening hardware

The steering kit includes upper and lower tapered bearing races for its listed CB650C application. The featured nut and washer are distinct products. Check the full steering assembly before ordering so worn hardware is considered separately from the bearing replacement.

Use the correct adjustment information

The stem nut replaces 90304-425-000 and the washer replaces 90503-425-000. Their part identity helps with ordering but does not establish assembly settings. Use the appropriate service manual and any supplied bearing instructions for installation, adjustment and final checks.

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 this kit after a front-end swap?

Identify the fitted stem, bearings and frame arrangement first. A swapped front end may not retain the standard CB650C combination, so its required dimensions must be checked before relying on the model application.

Not sure which part you need?

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

Ask a fitment question
Parts categories for 1980 Honda CB650C Custom

Your cart

×