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  • 1974-78 Honda CB550F / CB550K Premium Piston Ring Set (Standard Size)~ Made in Japan
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Honda CB550F CB550K premium piston ring set (standard size) made in japan 13011-374-000
SKU 73-1025 — approved OEM fiche location reference (BL03-dealer-r2)
Honda CB550F CB550K premium piston ring set (standard size) made in japan 13011-374-000 – rendered product view
Honda CB550F CB550K premium piston ring set (standard size) made in japan 13011-374-000 – rendered rear view
Honda CB550F CB550K premium piston ring set (standard size) made in japan 13011-374-000 – rendered left view
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Honda CB550F CB550K premium piston ring set (standard size) made in japan 13011-374-000

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Load image into Gallery viewer, Honda CB550F CB550K premium piston ring set (standard size) made in japan 13011-374-000
Load image into Gallery viewer, SKU 73-1025 — approved OEM fiche location reference (BL03-dealer-r2)
Load image into Gallery viewer, Honda CB550F CB550K premium piston ring set (standard size) made in japan 13011-374-000 – rendered product view
Load image into Gallery viewer, Honda CB550F CB550K premium piston ring set (standard size) made in japan 13011-374-000 – rendered rear view
Load image into Gallery viewer, Honda CB550F CB550K premium piston ring set (standard size) made in japan 13011-374-000 – rendered left view

1974-78 Honda CB550F / CB550K Premium Piston Ring Set (Standard Size)~ Made in Japan

73-1025
$32.95 USD
In stock Usually ships the same or next business day
Check model fitment View fitment
Questions about this part? Contact us 4.8/5 1,332 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
1974-78 Honda CB550F / CB550K Premium Piston Ring Set (Standard Size)~ Made in Japan
$32.95 USD
Description

Restore compression and keep your vintage Honda running strong with this Premium Japanese-Made Standard Size Piston Ring Set, manufactured for superior fit and long-lasting performance. This set matches OEM reference 13011-374-000 (STD) and is designed for standard bore applications on CB550 engines.

Whether you're doing a top-end refresh or a full rebuild, fresh rings help improve sealing, reduce blow-by, and support smoother, more consistent engine performance.

Key Features
• Premium Japanese-made standard size piston ring set
• OEM reference 13011-374-000 (STD.)
• Manufactured for precise fit and reliable sealing
• Ideal for engine rebuilds, restorations, and top-end service
• Set rebuilds one piston (order multiple sets for full engine)

Fitment / Compatibility
• Honda CB550K (1974-1978)
• Honda CB550F (1975-1977) Supersport

Note: This set includes piston rings to rebuild one piston. Four (4) sets are required to rebuild all pistons.

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Check the listed model and year, then read any fitment notes in the description.

Make Model Year
Honda CB550K0 1974
Honda CB550K1 1975
Honda CB550K2 1976
Honda CB550K3 1977
Honda CB550K4 1978
Honda CB550F1 1975
Honda CB550F2 1976
Honda CB550F3 1977

Free ground shipping over $50

To the USA & Canada. In-stock orders usually ship from our own warehouse the same or next business day.

Estimated ground delivery after your order ships
DestinationDelivery time
USA4–7 business days
Canada2–6 business days

Ground shipping includes tracking, emailed when your order ships. Need it sooner? Express options are available at checkout.

See full shipping details

60-day returns on eligible parts

No restocking fees. Eligible parts must be unused, uninstalled, unaltered and complete. The 60-day window starts when your order is delivered.

Electrical parts are excluded from standard returns. Check return eligibility.

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Other shipping options

Canada Post Economy: Available at checkout for select small items. Allow 1–3 weeks for delivery. No tracking or insurance is included.

Outside the USA & Canada: Delivery times vary by destination and shipping method. Buyers are responsible for applicable duties, taxes and import fees. We cannot mark orders as gifts.

Frequently Asked Questions

How many Japanese-made standard piston-ring sets are required for a CB550?

One standard-size ring set for one piston is included. The four-cylinder CB550F and CB550K require four sets to replace the rings on all four pistons.

What Honda ring number does the set replace?

It replaces Honda OEM 13011-374-000 for the listed 1974-1978 CB550F and CB550K applications.

Can standard rings be installed in a worn cylinder?

Only after measurement. Check bore diameter, taper and out-of-round and verify ring end gap in each cylinder. Excessive wear may require machining and oversize pistons and rings.

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