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  • 1976-78 Honda CB750 Piston Ring Set ~ 1st Oversize +0.25mm
Honda CB750 1ST oversize piston ring set +0.25mm 13021-392-004
Charger l'image dans la galerie, Honda CB750 1ST oversize piston ring set +0.25mm 13021-392-004

1976-78 Honda CB750 Piston Ring Set ~ 1st Oversize +0.25mm

05-7301
$23.45
In stock Usually ships the same or next business day
Fits select Honda CB models View complete fitment below
1976-78 Honda CB750 Piston Ring Set ~ 1st Oversize +0.25mm
Description

Step up to a 0.25mm oversize with this 1st Oversize Piston Ring Set (+0.25mm), Japanese made to superior quality and replacing OEM Ref. #13021-392-000 / #13021-392-004. Matched to the late-'70s CB750 lineup, including the 1977-78 CB750K, 1977 CB750F Supersport, 1976-78 CB750A Hondamatic, and 1976 CB750F Supersport (with engine serial numbers above #2551568).

Note: this set includes rings for one piston. 4 sets needed to rebuild all pistons.

Key Features
• 1st oversize (+0.25mm) piston ring set
• Replaces OEM #13021-392-000 / #13021-392-004
• Japanese made, superior quality
• One piston per set (4 sets for full rebuild)

Fitment / Compatibility
• Honda CB750K (1977‑78)
• CB750F (1977) Supersport
• CB750A (1976‑78) Hondamatic
• CB750F (1976) Supersport, engine serial above #2551568

Part Number: 05-7301

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Shipping Information

All items on our website are in hand ready to ship immediately. We ship orders out every business day.

We do our best to insure the earliest possible ship time on all orders, Orders are typically shipped on the business day the order is placed or the business day after.

USA Orders shipping with Ground Shipping will arrive in approximately 3-7 business days after shipping. Canadian orders shipping with Ground will arrive in approximately 2-6 business days. You will be emailed tracking information after the order has been shipped. All packages are shipped without signature confirmation, so any packages that arrive while no one is home will be left at the door.

USA Ground Shipping

We offer FREE Ground Shipping for ALL orders to the USA over $50. We also offer express options at checkout.

Shipping to Canada

Ground Shipping

We offer FREE Ground Shipping to Canada for all orders over $50.

We ship packages to Canada daily using several different couriers. We do this because the price to ship from province to province varies greatly by courier. Delivery will take around 2-6 Business days depending on location. You will be emailed tracking information as soon as the order is picked up. Please use this tracking number to determine when your package will arrive, and make appropriate arrangements.

Economy Shipping

We offer Economy Canada Post shipping at checkout for select small items. If your order applies for Post Economy shipping it will show up at checkout as an option. Canada Post Economy shipping does not include tracking or insurance. It typically takes 1-3 weeks for delivery.

International Shipping Information

International orders can be placed directly through our website.

Note:

International buyers please be aware of the relevant taxation implications for your respective Countries. We will not be responsible for any extra charges for duties, or taxes once your order arrives. Sorry, we cannot ship orders as “a gift”.

Returns

Need to return a part? Not a problem! Visit our return page and fill out the return form. We will get back to you with the return instructions within 1 business day.

Frequently Asked Questions

How many +0.25 mm ring sets are needed for a complete late SOHC CB750 rebuild?

One Japanese-made ring set replacing Honda OEM 13021-392-000 or 13021-392-004 services one piston. The four-cylinder engine requires four sets.

Which 1976-1978 Honda CB750 engines use this first-oversize ring set?

It fits 1977-1978 CB750K, 1977 CB750F, 1976-1978 CB750A, and 1976 CB750F engines from engine number 2551568 onward. Check the 1976 CB750F engine number rather than relying only on the frame year.

What must match a +0.25 mm CB750 piston ring set?

The engine needs +0.25 mm pistons and cylinders bored and finished to the corresponding first-oversize specification. Confirm piston size, bore measurement, and ring end gap before assembly.

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