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1980 Honda CB750C Piston Rings

Piston ring choice on a 1980 CB750C depends on the engine in front of you, including any previous rebore. The available standard, first-oversize and second-oversize sets cover one piston each. Confirm measurements before ordering a complete engine quantity.

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Honda CB Piston Pin Clips 15mm Pk/2 ~ Replaces 94601-15000

Honda CB Piston Pin Clips 15mm Pk/2 ~ Replaces 94601-15000

$1.95 USD
05-7201
Secure your piston pins with this 2-pack of 15mm Piston Pin Clips, Japanese made to superior quality and replacing OEM Ref. #94601-15000. Exceptionally broad...
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Honda CB750 standard piston ring set 13011-425-004

1979-83 Honda CB750 Piston Ring Set ~ Standard Size

$24.95 USD
05-7500
Rebuild your DOHC CB750's top end with this Standard Size Piston Ring Set, Japanese made to superior quality and replacing OEM Ref. #13011-425-004. Matched...
Honda CB750 DOHC 1ST oversize piston ring set +0.25mm 13021-425-004

1979-83 Honda CB750 DOHC Piston Ring Set ~ 1st Oversize +0.25mm

$24.95 USD
05-7501
Run a 0.25mm oversize on your DOHC CB750 with this 1st Oversize Piston Ring Set (+0.25mm), Japanese made to superior quality and replacing OEM...
Honda CB750 DOHC 2ND oversize piston ring set +0.50mm 13031-425-004

1979-83 Honda CB750 DOHC Piston Ring Set ~ 2nd Oversize +0.50mm

$24.95 USD
05-7502
Rebuild your DOHC CB750 at 0.50mm oversize with this 2nd Oversize Piston Ring Set (+0.50mm), Japanese made to superior quality and replacing OEM Ref....
Honda CB750K CB750C CB750F 62mm std piston kit w rings and pin 13101-425-000

Standard Size (62mm) Piston Kit (07-0184)

$69.95 USD
07-0184
Upgrade or rebuild your classic Honda motorcycle engine with this Standard Size (62mm) Piston Kit — complete with piston, piston rings, piston pin, and...
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1980 Honda CB750C · Piston Rings Buying guide

Match the rings to the measured bore

Standard, +0.25mm and +0.50mm sets are separate sizes. The model year identifies the application; it does not establish whether a forty-year-old engine still has standard pistons.

Parts to consider

1979-83 Honda CB750 Piston Ring Set ~ Standard Size Standard piston ring setRings for one piston. Four sets are required to renew all four pistons.View part 1979-83 Honda CB750 DOHC Piston Ring Set ~ 1st Oversize +0.25mm +0.25mm piston ring setFirst-oversize rings for one piston. Four sets are needed for all four pistons.View part 1979-83 Honda CB750 DOHC Piston Ring Set ~ 2nd Oversize +0.50mm +0.50mm piston ring setSecond-oversize rings for one piston. Match the serviced bore and piston size.View part

Choose size before quantity

The standard set uses reference 13011-425-004, the +0.25mm set 13021-425-004, and the +0.50mm set 13031-425-004. Those choices correspond to different piston sizes. Have bore condition and clearance assessed before committing to a size.

Count by piston

Each ring set supplies rings for one piston, so a four-piston rebuild needs four sets of the appropriate size. A two-pack of 15mm piston-pin clips is a separate retaining-hardware product, not an additional ring set.

Piston Rings questions

Does standard mean my engine needs standard rings?

No. A previously rebuilt engine may have oversize pistons. Verify the existing piston identification and measured bore before selecting standard, +0.25mm or +0.50mm rings.

How many ring sets cover four pistons?

Four sets. Each of the featured ring products is specified for one piston, so one set is not a complete four-cylinder engine package.

Can larger rings compensate for a worn standard bore?

Do not choose oversize rings as a shortcut. Have the bore and piston combination measured, then use rings matched to the resulting engine specification and service-manual checks.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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