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1981 Honda CB900F — Composants et amortisseurs de direction

Steering-head service on the 1981 CB900F Supersport may require bearings, damaged threaded hardware or both. The tapered bearing kit and two different stem nuts serve distinct positions, so identify each part in the assembly before deciding what to replace.

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Honda CB1100 CB1000 CB900 CB750 steering bearing kit

Honda CB1100 / CB1000 / CB900 / CB750 Steering Bearing Kit

$59.95 USD
28-2006
Upgrade your DOHC CB steering bearings with this Steering Bearing Kit. Tapered roller steering bearing conversion kit, superior to OEM quality with 10X the...
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 steering stem head lock nut 90302-425-830

Honda CB Steering Stem Head Lock Nut ~ Replaces 90302-425-830

$8.95 USD
29-7025
Replace your steering stem head lock nut with this Steering Stem Head Top Thread-On Lock Nut, replacing OEM #90302-425-830.Key Features• Steering stem head top...
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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1981 Honda CB900F Supersport · Steering Bearings & Hardware Buying guide

Match bearings and nuts to their own positions

The bearing conversion kit includes upper and lower tapered bearing races. Separate stem nuts carry different reference numbers, while the stem washer is available on its own for the matching hardware position.

Parts to consider

Honda CB1100 / CB1000 / CB900 / CB750 Steering Bearing Kit Tapered steering bearing kitTapered roller conversion kit with upper and lower bearing races; made in Japan.Voir la pièce Honda CB Steering Stem Nut ~ Replaces 90304-425-000 Steering stem nutReplaces reference 90304-425-000; supplied individually, with washer separate.Voir la pièce Honda CB Steering Stem Head Lock Nut ~ Replaces 90302-425-830 Thread-on head lock nutThread-on steering head lock nut replacing reference 90302-425-830.Voir la pièce

Pièces connexes : Separate steering stem washer

Plan bearing service as an assembly job

The tapered kit includes upper and lower bearings with races. Inspect the stem and bearing seats, and use the kit’s installation guidance together with the Honda assembly procedure. Tapered-bearing setup needs a correct adjustment and final free-movement check; the stem top nut and adjusting hardware have different jobs.

Do not interchange similar-looking nuts

The stem nut replaces 90304-425-000; the head lock nut replaces 90302-425-830. Use their assembly positions and references to tell them apart. The linked stem washer replaces 90503-425-000 and is sold separately, so check whether your repair requires that piece too.

Buying questions

Can tightening the steering head cure a notch at straight ahead?

Adjustment can address incorrect free play, but it cannot repair pitted or notched bearing surfaces. Inspect the bearings and races when the steering feels rough or catches at center. Avoid tightening until the steering binds to hide worn parts.

Are the stem top nut and threaded head lock nut interchangeable?

No. They occupy different positions and have different references: 90304-425-000 for the stem nut and 90302-425-830 for the head lock nut. Match the assembly drawing and inspect the threads; do not apply one fastener’s tightening procedure to the other.

What should be checked after fitting tapered bearings?

Follow the bearing kit and Honda assembly guidance, then verify smooth steering without excessive play or binding. Check cable and hose movement through the steering range too. Recheck the installation as the kit instructions require rather than assuming a new bearing is correctly adjusted by feel alone.

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