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1981 Honda CB750K Pistons & Ring Sets

Piston purchases should follow the condition and measured size of the installed cylinders and pistons. The 1981 Honda CB750K listings offer a standard 62mm piston kit plus standard, first-oversize and second-oversize ring sets. Each kit or ring set covers one piston.

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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...
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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1981 Honda CB750K · Piston & Ring Sets Buying guide

Choose the measured size and count each piston

Decide whether you need a piston assembly or rings for an existing piston. Standard and oversize ring listings are separate products, while the standard piston kit also supplies its pin and clips.

Parts to consider

Standard Size (62mm) Piston Kit (07-0184) Standard 62mm piston kitIncludes one standard 62mm piston, its rings and pin, and a pair of pin clips. Four kits are listed for replacing all four pistons.View part 1979-83 Honda CB750 Piston Ring Set ~ Standard Size Standard piston ring setStandard-size rings supplied as one set for one piston. Compare the piston size with the listing before choosing a quantity.View part 1979-83 Honda CB750 DOHC Piston Ring Set ~ 1st Oversize +0.25mm First-oversize piston ring setThe listing specifies first oversize, +0.25mm, and one piston per set. Select by the measured piston and cylinder requirement.View part

Related parts: Second-oversize +0.50mm ring set

A standard kit is a defined size

The current piston kit title and description specify 62mm standard size. Do not choose it for a previously bored engine simply because the motorcycle is a 1981 CB750K. Confirm the existing cylinder and piston measurements, then compare them with the actual product specification.

Distinguish the package from the engine quantity

One standard piston kit includes rings, a pin and two clips for one piston. A ring set likewise serves one piston, without becoming a piston kit. Work out the number of pistons involved, and avoid buying separate rings or clips already listed in the chosen kit.

Common questions

How many standard piston kits are needed for four pistons?

The product description specifies four kits. Each kit supplies one piston with rings, a pin and a pair of clips. If the job involves fewer pistons, base your quantity on the inspected repair plan rather than ordering a full engine quantity automatically.

Which oversize rings should I order?

Choose from the measured piston and cylinder specification. The current ring listings identify standard, +0.25mm first oversize and +0.50mm second oversize. A model-year fitment entry cannot tell you whether an older engine has already been bored.

Are pin clips included with the standard piston kit?

Yes. The current 62mm kit description includes a pair of piston pin clips along with the piston, rings and pin. Check that contents list before adding clips separately; a standalone ring set is a different purchase.

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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