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Honda CB750 1ST oversize piston kit +0.25mm 13102-300-030
Corrected parts fiche reference for SKU 05-7101

1969-76 Honda CB750 Piston Kit ~ 1st Oversize +0.25mm

05-7101
$69.95 USD
In stock Usually ships the same or next business day
Check model fitment View fitment
Questions about this part? Contact us 4.8/5 1,347 store reviews

$69.95 USD

Take your early CB750K cylinders to a 0.25mm oversize bore with this 1st Oversize Piston Kit (+0.25mm). Japanese made to superior quality, replacing OEM Ref. #13102-300-030. Kit includes the piston, piston pin, and piston pin clips (pair). Piston rings are NOT included, order separately.

Note: this kit rebuilds one piston. 4 kits needed for a full 4-cylinder rebuild.

Key Features
• 1st oversize (+0.25mm) piston kit
• Includes piston, piston pin, and pin clips (pair)
• Replaces OEM #13102-300-030
• Japanese made, superior quality
• Rings sold separately
• One piston per kit
• Honda part name: Piston (Os 0.25)
• Interchangeable with Honda 13102-300-020

Fitment / Compatibility
• Honda CB750K (1969‑76)

Part Number: 05-7101

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Check the listed model and year, then read any fitment notes in the description.

Honda motorcycle models and years listed for this part
Make Model Year
Honda CB750K Standard 1969
Honda CB750K 1970
Honda CB750K 1971
Honda CB750K 1972
Honda CB750K 1973
Honda CB750K 1974
Honda CB750K 1975
Honda CB750K 1976

Free ground shipping over $50

To the USA & Canada. In-stock orders usually ship from our own warehouse the same or next business day.

Estimated ground delivery after your order ships
DestinationDelivery time
USA4–7 business days
Canada2–6 business days

Ground shipping includes tracking, emailed when your order ships. Need it sooner? Express options are available at checkout.

60-day returns on eligible parts

No restocking fees. Eligible parts must be unused, uninstalled, unaltered and complete. The 60-day window starts when your order is delivered.

Electrical parts are excluded from standard returns. Check return eligibility.

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Other shipping options

Canada Post Economy: Available at checkout for select small items. Allow 1–3 weeks for delivery. No tracking or insurance is included.

Outside the USA & Canada: Delivery times vary by destination and shipping method. Buyers are responsible for applicable duties, taxes and import fees. We cannot mark orders as gifts.

Frequently Asked Questions

How many +0.25mm CB750 piston kits are included and required?

One Japanese-made first-oversize piston, piston pin and pair of pin clips are included for one cylinder. Four kits are required to replace all four pistons in a 1969-1976 CB750K engine.

Are piston rings included with +0.25mm piston kit 05-7101?

No. Matching first-oversize +0.25mm piston rings are sold separately; one ring set is required for each piston.

What machining is required for Honda piston 13102-300-030?

Have each cylinder measured and bored or honed to the actual +0.25mm piston using the Honda piston-to-cylinder clearance. Also verify ring end gap, piston-pin fit and correct pin-clip seating during assembly.

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