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1970 Honda CB350K2 Steering Bearings

The 1970 CB350K2 steering arrangement does not use the earlier friction damper. This selection concerns bearing service and stem hardware. Check whether the front end remains original, then compare the tapered bearing conversion and the separately supplied stem washer for the repair.

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Honda CB1000 CB900 CB750 CB550 chrome steering stem nut 90304-415-000

Honda CB Chrome Steering Stem Nut ~ Replaces 90304-415-000

$9.95 USD
49-0786
Replace your steering stem nut with this Chrome Steering Stem Nut, hex nut size 30mm, replacing OEM #90304-415-000.Sold each. We also offer the matching...
Honda CB1000 CB900 CB750 CB550 steering stem washer 90503-283-000

Honda CB Steering Stem Washer ~ Replaces 90503-283-000

$3.50 USD
49-0787
Replace your steering stem washer with this Chrome Steering Stem Washer, replacing OEM #90503-283-000.Sold each, order the quantity you require.Key Features• Chrome steering stem...
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...
Sold out
Honda CB750 CB550 black steering stem nut joker machine 90304-415-000

Honda CB Black Steering Stem Nut ~ Joker Machine ~ Replaces 90304-415-000

$47.95 USD
12-0073
Dress up your steering stem with this Joker Machine Black Steering Stem Nut, 30mm hex, replacing OEM #90304-415-000. High-quality CNC-machined and made in the...
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1970 Honda CB350K2 · Steering Bearings & Hardware Buying guide

Plan bearing service around the K2 stem

The tapered kit supplies upper and lower bearing components for a conversion. The separate washer serves the stem hardware, with Honda’s K2 parts catalog confirming its reference and one-per-motorcycle quantity.

Parts to consider

Honda CB Steering Bearing Kit Tapered steering bearing kitConversion kit with upper and lower tapered bearing races; listed for the early CB350K.View part Honda CB Steering Stem Washer ~ Replaces 90503-283-000 Steering stem washerSold individually; replaces Honda 90503-283-000, specified once on the K2.View part

Treat the bearing kit as a complete system

The kit changes the steering bearings to a tapered-roller arrangement. Follow its instructions for component selection and setup instead of mixing old bearing parts into the conversion. Check the actual stem and frame if a previous owner installed a different front end.

Check the upper hardware independently

The washer is separately supplied and has a factory-confirmed K2 reference. Compare the upper nut and any replacement hardware by their exact application before ordering. The absence of the earlier steering damper does not, by itself, prove that every later Honda stem nut is interchangeable.

Buying questions

Did the CB350K2 have a steering damper?

Honda’s consolidated service manual specifies no steering damper for the K2 through K5 models. For an original K2, focus this repair on the steering bearings and applicable stem hardware rather than ordering parts for the earlier damper assembly.

Does the tapered bearing kit include the upper stem washer?

Treat the listed washer as a separate purchase. The kit description confirms the upper and lower tapered bearing races, while the dedicated washer product replaces Honda 90503-283-000. Inspect the existing washer before deciding whether it needs replacement.

Can I use this kit after a front-end swap?

Verify the fitted stem and frame bearing requirements against the kit before ordering. Its CB350K application describes the original arrangement; a different stem or adapted front end requires a separate compatibility check.

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

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