This is a genuine factory original Honda OEM rear drum brake backing plate for classic CB750 Four K-series motorcycles. Made from cast aluminum, it covers the rear drum assembly, supports the brake shoes, and transfers braking force through the rear brake system. Ideal for restoration or replacement use. Specifications - Brand: Honda OEM - Part Type: Rear Drum Brake Backing Plate - Factory Part Number: 43100-300-020 - Casting Mark: 300 - Material: Cast Aluminum Compatibility - 1969 Honda CB750 Four K0 - 1970-1971 Honda CB750K1 - 1972 Honda CB750K2 - 1973 Honda CB750K3 - 1974 Honda CB750K4 - 1975 Honda CB750K5 - 1976 Honda CB750K6 / K Fitment Note Designed for standard spoked-wheel SOHC CB750 K-series rear drum hubs. It is not intended for CB750F Super Sport rear disc brake models or later K7/K8 setups with different rear brake and axle configurations. Verify fitment before purchase.
Please verify compatibility with your specific motorcycle model before purchasing.
Cleaning Status
partially_cleaned
Cleaning Notes
Used degreaser
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Estimated delivery: 2-5 business days
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30-day return policy on most items
Items must be in original condition and packaging
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Yes, all parts with OEM numbers are genuine manufacturer parts. Check the specifications tab for the OEM number.
We offer a 30-day return policy. Items must be in original condition. See the Shipping tab for complete details.
Yes, we ship to most countries worldwide. Shipping costs and delivery times vary by location.
Parts are sold separately. We recommend professional installation for safety and warranty purposes.
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