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1978 Honda CB550K Piston Kits, Rings & Pin Clips

Piston purchases for the 1978 Honda CB550K need a dimension check before a quantity decision. The standard kit supplies several components for one piston; separate standard rings and a two-clip pack are different options. Compare their contents with the actual internal parts being retained.

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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 CB650 CB550 tappet adjuster screw and nut set 90012-426-000

Honda CB Tappet Adjuster Screw & Nut Set ~ Replaces 90012-426-000

$4.61 USD
49-0784
Replace your tappet adjuster screws and nuts with this Tappet Adjuster Screw & Nut Set. Each set includes one tappet adjuster screw and one...
New
Honda CB550F CB550K premium piston ring set (standard size) made in japan 13011-374-000

1974-78 Honda CB550F / CB550K Premium Piston Ring Set (Standard Size)~ Made in Japan

$32.95 USD
73-1025
Restore compression and keep your vintage Honda running strong with this Premium Japanese-Made Standard Size Piston Ring Set, manufactured for superior fit and long-lasting...
New
Honda CB550F CB550K standard size piston ring set 13011-374-000

1974-78 Honda CB550F / CB550K Standard Size Piston Ring Set ~ Replaces 13011-374-000

$19.95 USD
99-4867
Upgrade or rebuild your classic Honda motorcycle engine with this Standard Size Piston Ring Set — designed to replace OEM #13011‑374‑000. This set includes...
New
Honda CB550F CB550K standard size (58.5 mm) piston kit includes piston, rings, pin and clips

1974-78 Honda CB550F / CB550K Standard Size (58.5 mm) Piston Kit ~ Includes Piston, Rings, Pin & Clips

$49.95 USD
99-4870
Upgrade or rebuild your classic Honda motorcycle engine with this Standard Size (58.5 mm) Piston Kit — complete with piston, piston rings, piston pin, and...
New
Honda CB650 CB550 CB500 piston pin 13111-440-000

Honda CB Genuine Honda Piston Pin ~ OEM 13111-440-000 / 13111-286-000

$18.95 USD
99-5321
Upgrade or restore your classic Honda motorcycle with this Genuine Honda Piston Pin — precision‑engineered and made in Japan. This authentic replacement fits and...
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1978 Honda CB550K · Piston & Ring Sets Buying guide

Confirm size before counting piston packages

The piston kit states 58.5 mm, and the ring listing identifies a standard-size set for one piston. Separate pins and clip packs can overlap with kit contents, so compare what each purchase supplies.

Parts to consider

1974-78 Honda CB550F / CB550K Standard Size (58.5 mm) Piston Kit ~ Includes Piston, Rings, Pin & Clips Standard 58.5 mm piston packageOne piston with rings, pin and a pair of pin clips; compare the required size.View part 1974-78 Honda CB550F / CB550K Premium Piston Ring Set (Standard Size)~ Made in Japan Japanese-made standard piston ringsStandard reference 13011-374-000; the listing specifies rings for one piston.View part

Related parts: Separately listed genuine Honda piston pin

Keep a standard-size label tied to a measurement

The kit is expressly 58.5 mm standard size. The Japanese-made ring set is also described as standard and references 13011-374-000. Have the actual piston and bore requirements identified before buying; the motorcycle year cannot tell you whether previous engine work changed the dimensions.

Avoid buying the kit’s pin and clips twice

The piston kit includes a pin and pair of clips as well as its rings. The separate clip product is a two-pack, and a genuine Honda pin is another listed purchase. Compare the missing or required components with those contents before adding multiple products for the same piston.

Common ordering questions

Does the Japanese-made ring set cover four pistons?

Its description identifies rings for one piston and says four sets are required to rebuild all pistons. Decide which pistons are included in the work before ordering, and confirm the stated standard-size application against the fitted components.

How many clips are in the separate clip pack?

The separate listing specifies two 15 mm clips with reference 94601-15000. Compare that package with the required piston and pin arrangement, especially if buying a piston kit that already supplies a pair of clips.

Is the separate pin described as genuine Honda?

The description identifies a genuine Honda pin with references 13111-440-000 and 13111-286-000. Its part number, 99-5389, differs from the variant SKU, 99-5321. Confirm the required pin with the store using the Honda references and removed component before ordering.

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