A standard-size ring set is useful only when the measured piston and bore still call for standard rings. The 1980 CB650C selection also includes piston pins and retaining clips, so separate wear parts from retaining hardware when planning the top-end order.
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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Rebuild your CB650 cylinders with this Standard-Size Piston Ring Set, OEM #13011-426-004 (Std.). Japanese-made, superior quality.Note: this set includes piston rings to rebuild one...
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Upgrade or restore your classic Honda motorcycle with this Genuine Honda Piston Pin — precision‑engineered and made in Japan. This authentic replacement fits and...
The available ring set covers one piston and uses reference 13011-426-004. Piston pins and two-packs of clips are separate items; they do not change the quantity supplied in the ring package.
A motorcycle’s model year cannot tell you whether an earlier owner rebored its engine. Have bore condition and piston clearance assessed before selecting standard rings. Use the correct service-manual checks rather than treating new rings as a cure for an unsuitable bore.
Order the retaining hardware separately
The separate pack contains two 15mm clips, reference 94601-15000, enough for one compatible piston. Four packs supply eight clips for all four pistons. Match the retaining arrangement on any aftermarket pistons before ordering; the standard ring set does not include these clips.
Piston Rings & Pins questions
How many ring sets cover four pistons?
Four one-piston sets are needed for all four pistons. Confirm that every piston uses the listed standard size before ordering four identical sets.
What should I check before selecting the pin clips?
Confirm the 15mm size and reference 94601-15000 against the fitted piston’s retaining arrangement, especially with aftermarket pistons. Replace clips whenever they are removed; the supplied pair serves one compatible piston.
Can standard rings correct an oversize bore?
Do not select rings on that basis. The piston and bore must be measured and matched to the appropriate ring specification before ordering or reassembly.
Not sure which part you need?
Send your model and year, plus photos of your existing part and any changes to the original setup.