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1972 Honda SL350K2 Steering Hardware

Look closely at the upper bridge and steering stem hardware before ordering for a 1972 Honda SL350K2. A washer pair and an aftermarket stem nut address different locations, and a changed top bridge needs more than a model-year match.

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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...
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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...
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1972 Honda SL350K2 · Top Bridge & Stem Hardware Buying guide

Match upper bridge washers and stem hardware separately

Choose the washer pair for the relevant top bridge assembly or compare the aftermarket nut with the fitted steering stem. Preserve the distinction between mounting hardware and the fork-cap seals also present in this filter.

Parts to consider

Honda CB Front Fork Top Bridge / Triple Tree Washer Kit ~ Replaces 53235-300-000 Top bridge washer pairTwo washers with replacement reference 53235-300-000.View part Honda CB Black Steering Stem Nut ~ Joker Machine ~ Replaces 90304-415-000 Joker Machine black stem nutCNC-machined aftermarket nut with a 30 mm hex and replacement reference 90304-415-000; made in the USA.View part

Inspect the bridge before renewing its washers

The top bridge kit contains two washers. Compare the existing washer arrangement and reference 53235-300-000 before replacing them, and inspect the bridge itself for damage. Follow the appropriate service information for assembly; new washers do not establish that a damaged casting is safe to reuse.

Treat the nut’s hex as a tool size

The Joker Machine nut has a 30 mm hex, but that number does not specify its thread. Compare reference 90304-415-000 and the fitted stem interface before selecting it. Its black finish and aftermarket manufacture are separate considerations from mechanical compatibility.

Questions before ordering

Does the top bridge kit provide a pair of washers?

Yes. It contains two washers with replacement reference 53235-300-000. Compare their intended positions with the fitted bridge, particularly if the front end or upper bridge has been changed.

Is the stem nut’s 30 mm dimension its thread size?

No. The stated 30 mm dimension is the hex size. Verify the mounting interface using the reference and fitted stem rather than assuming that a matching wrench size establishes thread compatibility.

What if the upper bridge or steering stem has been changed?

Identify the fitted bridge and stem before selecting either item. Compare their washer arrangement and nut interface with the replacement references; the motorcycle’s model-year label cannot identify the hardware used in a different front-end assembly.

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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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