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Honda ST90 Vintage Motorcycle Parts

Find Honda ST90 parts for front-fork service, brake repairs, clutch service and control replacement. Start with your exact model and year, then check the fitment details and package contents on each product before ordering.

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In stock
Honda C70 CT110 CT200 CM91 Rear Shock Swingarm Bushing 52181-001-300

Honda C70 CT110 CT200 CM91 Rear Shock Swingarm Bushing - Replaces Honda OEM 52181-001-300

$12.58
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Honda C70 CT110 CT200 CM91 Rear Shock Swingarm Bushing - Replaces Honda OEM 52181-001-300. This swingarm pivot service part supports, guides, or seals the...
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Honda Kawasaki Yamaha Suzuki Motorcycle Fork Seal set of 2-27 x 39 x 10.5

Honda Kawasaki Yamaha Suzuki Motorcycle Fork Seal Set/2-27 x 39 x 10.5

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Honda Kawasaki Yamaha Suzuki Motorcycle Fork Seal Set/2-27 x 39 x 10.5. These fork oil seals retain fork oil around the fork tubes while...
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About the Honda ST90

Mighty Dax identity, fork dimensions and separate front and rear brake applications.

Honda Motorcycle Logo

The Honda ST90 Mighty Dax uses a horizontal four-stroke OHC engine. This guide focuses on its 1973–1975 fork seals, front and rear brake shoes, and individual clutch plates.

Build a brake and fork service order

Choose shoes for the brake position being repaired and compare the fitted fork with the 27 × 39 × 10.5 mm oil-seal pair. If the engine has been replaced, identify it before selecting clutch parts.

Model and year comparisonST90 parts differences

Use these model and component differences to narrow the correct parts for your motorcycle.

Front fork

27 × 39 × 10.5 mm seals

The fork oil seals fit ST90 1973–1975 and are supplied as a set of two.

Brake shoes

Choose the correct position

Separate front and rear shoe you can find ST90 1973–1975.

Clutch

Individual plate replacement

The clutch plate fits ST90 1973–1975 and is sold individually.

Prepare for the repairIdentify your ST90 components

Use these checks when a registration year or a model badge does not identify the fitted parts.

  • ST90 designation and model year checked against the motorcycle and documents.
  • Frame and engine markings, including known replacement-engine details.
  • Fork assembly and full removed-seal dimensions.
  • Front or rear brake position and the fitted wheel and brake assembly.
Need help identifying your ST90?

Contact PartsNMore with the model year, frame and engine markings, and clear photographs of the component being repaired.

Honda ST90 parts for repairs and restoration

Choose the repair you are working on, then check the model, year, specifications and package contents on each part before ordering.

Handlebars, mirrors and custom controls

For an ST90 with replacement bars or mirrors, check the fitted control mounts and available clearance. Measure first so that a styling choice does not compromise cable reach or control movement.

Universal accessories require measurement and may need modification; they are not confirmed direct-fit ST90 parts.

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Supplying motorcycle parts since 2002. About PartsNMore.

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Help with your repair

Send your model, year and component photos. Ask our parts team.

Free ground shipping

USA orders $50+ USD; Canada over $50 CAD. Shipping details.

60-day returns

Unused, unaltered parts; original packaging required. Electrical parts excluded. Return conditions.

Honda ST90 Vintage Motorcycle parts questions

Which fork parts should I order for my ST90?
The 27 × 39 × 10.5 mm fork seals fit ST90 1973–1975 and come as a set of two. Confirm the fitted fork and old-seal dimensions.
What should I check before ordering the front brake shoes for my ST90?
The front brake shoes fit ST90 1973–1975. Match the front assembly and confirm the package quantity before ordering.
Does this repair use the same rear brake shoes for every ST90 year?
The rear brake shoes fit ST90 1973–1975. Check the rear assembly and current package contents.
How do I confirm the fitment of the clutch plates for my ST90?
The clutch plate fits ST90 1973–1975 and is sold individually. Confirm the plate type and the quantity needed for the actual engine.

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