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  • 1969-76 Honda CB750K / CB450K Front Caliper Piston ~ Replaces 45107-300-003
Honda CB750K CB450K front caliper piston 45107-300-003
Corrected parts fiche reference for SKU 29-0526
Honda CB750K CB450K front caliper piston 45107-300-003
Honda CB750K CB450K front caliper piston 45107-300-003
Honda CB750K CB450K front caliper piston 45107-300-003
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Honda CB750K CB450K front caliper piston 45107-300-003

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Load image into Gallery viewer, Corrected parts fiche reference for SKU 29-0526
Load image into Gallery viewer, Honda CB750K CB450K front caliper piston 45107-300-003
Load image into Gallery viewer, Honda CB750K CB450K front caliper piston 45107-300-003
Load image into Gallery viewer, Honda CB750K CB450K front caliper piston 45107-300-003
5.0 ( 2 reviews)

1969-76 Honda CB750K / CB450K Front Caliper Piston ~ Replaces 45107-300-003

29-0526
$49.95 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 1,331 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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2 product reviews

1969-76 Honda CB750K / CB450K Front Caliper Piston ~ Replaces 45107-300-003

1969-76 Honda CB750K / CB450K Front Caliper Piston ~ Replaces 45107-300-003
$49.95 USD
Description

Replace your early CB750K or CB450K front caliper piston with this Front Brake Caliper Piston, 38.15mm diameter x 34mm length, replacing OEM #45107-300-003.

Key Features
• Front brake caliper piston
• 38.15mm diameter x 34mm length
• Replaces OEM #45107-300-003

Fitment / Compatibility

• Front calipers: Honda CB750K (1969‑76), 1 per bike

• Front calipers: Honda CB450K (1970‑71), 1 per bike

Part Number: 29-0526

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

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
Honda CB450K3 1970
Honda CB450K4 1971

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.

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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 is the front caliper piston sold and how many are needed?

The piston is sold individually, and one is used in each listed front caliper.

What are the caliper-piston dimensions?

The piston measures 38.15 mm in diameter by 34 mm long.

Which Honda OEM number does the piston replace?

The piston cross-references Honda OEM part number 45107-300-003.

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