1981 Honda CB650C Custom Piston Rings & Clips

Four ring sets, because each package covers one piston. First confirm that each piston uses the listed standard specification; the quantity calculation does not establish fit.

Choose the ring size that matches the measured piston and bore. The selected product is explicitly standard size, so it should not be treated as a general solution for a previously bored engine.

Yes. Removed piston-pin clips should be replaced, even when the piston or pin is reused. Confirm the 15mm size and reference 94601-15000 for the retaining arrangement. One pair serves one compatible piston; four packs supply eight clips for all four pistons.