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1973 Honda SL350K3 Suspension & Steering Parts

The reviewed steering choice in this 1973 Honda SL350K3 suspension selection is a black Joker Machine stem nut. Its application includes the 1973 SL350, and its 30mm hex helps with tool planning. Identify a changed front end before ordering hardware for it.

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Universal chrome shrouded 290mm shock absorber set side detail

Universal Motorcycle Shorty Shock Absorber Set ~ Chrome Shrouded 290mm

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Universal black shrouded 290mm shorty motorcycle shock absorber set

Universal Motorcycle Shorty Shock Absorber Set ~ Black Shrouded 290mm

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Get the shortened look with a bit more coverage using this Custom Shorty Shock Absorber Set featuring a black body and shroud with black...
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Universal black 290mm eye-to-eye shorty motorcycle shock absorber set

Universal Motorcycle Shorty Shock Absorber Set ~ Black Eye-to-Eye 290mm

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Go shorter with a different mounting configuration using this Custom Shorty Shock Absorber Set. Black body and shroud with black progressive-wound springs, 290mm (11...
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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

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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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Universal black 290mm shorty motorcycle shock absorber set

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1973 Honda SL350K3 · Suspension & Steering Buying guide

Start with the steering assembly currently fitted

The Joker Machine nut replaces reference 90304-415-000 and has a 30mm hex. Use that reference to identify the replacement, keeping wrench size separate from the thread requirements of any swapped steering stem.

Parts to consider

Honda CB Black Steering Stem Nut ~ Joker Machine ~ Replaces 90304-415-000 Black steering-stem nutCNC-machined Joker Machine nut, made in the USA, with a 30mm hex and replacement reference 90304-415-000.View part

Match hardware after a front-end change

The nut has an explicit SL350 application covering 1969–73. If the steering assembly has been replaced, use the fitted stem’s identity and thread to check the replacement instead. Retain the old nut for comparison and inspect the receiving threads before selecting a cosmetic update.

Keep the steering job in view

A black nut can renew the visible hardware, but steering play, roughness or thread damage needs its own assessment. Have those conditions checked before deciding on the parts order. Use the correct service information for assembly and adjustment; the 30mm hex does not establish a tightening specification.

Buying questions

Does the 30mm measurement describe the thread?

No, it describes the hex used by the wrench or socket. Thread diameter and pitch are separate specifications; check those against the fitted stem if a previous owner has changed the steering assembly.

Is this nut offered for the 1973 SL350?

Yes. The current merchant application covers SL350 models from 1969 through 1973. Its listed replacement reference is 90304-415-000; confirm the installed steering assembly separately when the front end is no longer original.

Will a new nut address rough steering?

Have the cause of roughness assessed before ordering cosmetic hardware. The nut is one component of the steering assembly; inspection determines whether other parts or service are needed alongside it.

Not sure which part you need?

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

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