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1975 Honda CB550K Steering Bearings & Stem Hardware

The headstock of a 1975 Honda CB550K can be rebuilt with a tapered roller bearing conversion and its races, a chrome or CNC-machined black stem nut, the matching washer, fork cap O-rings, top bridge washers listed for 1974-75 bikes and Joker billet fork caps.

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Honda motorcycle parts

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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 CB750 CB550 CB500 CB450 CB400 fork cap o-ring (set 2) 94608-50000

Honda CB Fork Cap O-Ring (Set/2)

$2.95 USD
49-0790
Replace your fork cap O-rings with this Fork Cap O-Ring Set of 2, replacing OEM #94608-50000 (qty 2).Key Features• Fork cap O-rings• Set of...
Honda CB750 CB550 front fork top bridge triple tree washer kit 53235-300-000

Honda CB Front Fork Top Bridge / Triple Tree Washer Kit ~ Replaces 53235-300-000

$12.50 USD
73-0833
Avoid broken triple trees with this Front Fork Top Bridge / Triple Tree Washer Kit of 2 washers. These washers are needed in order...
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...
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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...
Honda CB750 CB550 CB500 fork boot collars joker machine

Honda CB750 / CB550 / CB500 Fork Boot Collars ~ Joker Machine

$99.95 USD
12-0072
Get a café look while keeping your OEM fork gaiters with these Joker Machine Custom Fully CNC Machined Fork Boot Collars, set of 2....
Honda CB750 CB550 CB500 CB450 type black fork caps (set 2) joker machine 90123-300-000

Honda CB750 / CB550 / CB500 / CB450 Type Black Fork Caps (Set/2) ~ Joker Machine ~ Replaces 90123-300-000

$99.95 USD
73-1064
Top off your forks with these Joker Machine Brand Custom Black Fork Caps, set of 2, with O-rings. Replaces OEM #90123-300-000.High-quality CNC-machined from billet...
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1975 Honda CB550K · Steering Buying guide

Smooth, precise steering

Identify whether the motorcycle retains its original bearing arrangement or an earlier conversion. The tapered kit, stem nut, washer and fork-cap parts are separate choices, with their own listed contents and references to compare.

Parts to consider

Honda CB Steering Bearing Kit Tapered steering bearing kitTapered conversion kit with upper and lower races, listed for 1974–77 CB550K models.View part Honda CB Chrome Steering Stem Nut ~ Replaces 90304-415-000 Chrome steering stem nutChrome nut with 30mm hex matching Honda 90304-415-000; sold each.View part Honda CB Front Fork Top Bridge / Triple Tree Washer Kit ~ Replaces 53235-300-000 Top bridge washer kitTwo top bridge washers referencing Honda 53235-300-000, listed for 1974–75 CB550K models.View part

Related parts: Steering stem washer · Joker Machine black stem nut · Fork cap O-ring pair

Top bridge washers

The top bridge kit supplies two washers and lists the 1974–75 CB550K. Its description calls for them when tightening the fork-tube clamps. Compare the existing washer positions and reference with the listing, and use the appropriate service information for the fitted top bridge.

Check the bearing kit contents

The featured kit is described as a tapered roller conversion with upper and lower races and lists the 1974–77 CB550K. Compare that stated package with the steering arrangement already fitted. Similar-looking listings or matching prices alone do not establish identical contents or interchange.

Common questions

Which spanner fits the stem nut?

A 30mm one. The chrome nut matches Honda 90304-415-000 and comes singly, with a chrome washer to suit offered as a separate item that also names 1974-78 CB550K bikes.

Are the Joker fork caps a stock replacement?

The Joker caps are a custom billet-aluminium pair with O-rings, referencing Honda 90123-300-000. Compare their listed application with the installed caps and forks; their appearance and construction differ from the stock-style cap listing.

How many fork cap O-rings come in the set?

The O-ring set contains two pieces and references Honda 94608-50000. Its fitment includes the 1974–78 CB550K; compare the existing cap seals and identify the quantities needed for the work.

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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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