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1971 Honda SL350K1 Seat Hardware

Movement at the hinge and poor support beneath the seat are separate checks on a 1971 Honda SL350K1. Compare the hinge pin and the seat setting rubber with the parts on your bike, taking extra care if a replacement seat pan has changed their locations.

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Honda CB750 CB550 CB500 CB350 SL350K1 seat hinge pin 77103-313-000

Honda CB Seat Hinge Pin ~ Replaces 77103-313-000

$4.50 USD
73-0947
Replace your seat hinge pin with this Seat Hinge Pin, replacing OEM #77103-313-000.Note: 2 used per bike, order the quantity you require.Key Features• Seat...
Honda CB750 CB650 CB550 CB500 seat setting rubber 77204-312-000

Honda CB Genuine Honda Seat Setting Rubber ~ OEM 77204-312-000

$13.95 USD
99-5052
Upgrade or restore your classic Honda motorcycle with this Genuine Honda Seat Setting Rubber — precision‑engineered and quality made in Japan. This authentic replacement...
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1971 Honda SL350K1 · Seat Hardware Buying guide

Find whether the seat needs hinge hardware or support

The seat selection contains a hinge pin and a Honda setting rubber. Inspect the pivot and support points independently, then match the part to its location rather than replacing both by assumption.

Parts to consider

Honda CB Seat Hinge Pin ~ Replaces 77103-313-000 Seat hinge pinHinge pin, reference 77103-313-000. The SL350 application uses two per bike; that is the required count, not a two-pin package.View part Honda CB Genuine Honda Seat Setting Rubber ~ OEM 77204-312-000 Honda seat setting rubberGenuine Honda seat setting rubber, reference 77204-312-000. Sold individually.View part

Inspect the hinge as a complete connection

The hinge pin carries reference 77103-313-000, and the application specifies two pins per bike. Keep that requirement separate from package quantity when ordering. Inspect the hinge holes and mounting structure as well, because new pins alone cannot be assumed to remove play caused by wear in the surrounding parts.

Choose support rubbers for the fitted seat pan

The genuine Honda setting rubber carries reference 77204-312-000 and is sold individually. Inspect the locations beneath the seat and compare the old rubber with the replacement. A different pan or repaired support may change the required contact arrangement even when the seat appears correct from above.

Questions before ordering

Does the seat setting rubber come as a pair?

No. It is sold individually under reference 77204-312-000. Count the support positions needing attention on the seat actually fitted, and verify the shape before deciding the order quantity.

Will the hinge pin suit a replacement seat pan?

The application specifies two pins per bike, reference 77103-313-000. For a replacement or repaired seat pan, compare its hinge arrangement and receiving mounts before carrying that count over. Two required pins does not establish a two-pin package.

Should I buy a new hinge pin when the seat rocks at the rear?

Identify the movement before buying. Inspect hinge wear and the contact at the seat supports separately; a missing or deteriorated setting rubber calls for a different part from a worn hinge connection.

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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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