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  • 1979-83 Honda CB750 High Performance Kibblewhite Black Diamond Exhaust Valve ~ Replaces 14721-422-000
Honda CB750 high performance kibblewhite black diamond exhaust valve 14721-422-000
Kibblewhite exhaust valve, SKU 12-0089: product photo and 1980 Honda CB750K (A) Camshaft / Valve fiche with the part location highlighted. Example diagram; check listing for fitment.
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Honda CB750 high performance kibblewhite black diamond exhaust valve 14721-422-000

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Load image into Gallery viewer, Honda CB750 high performance kibblewhite black diamond exhaust valve 14721-422-000
Load image into Gallery viewer, Kibblewhite exhaust valve, SKU 12-0089: product photo and 1980 Honda CB750K (A) Camshaft / Valve fiche with the part location highlighted. Example diagram; check listing for fitment.

1979-83 Honda CB750 High Performance Kibblewhite Black Diamond Exhaust Valve ~ Replaces 14721-422-000

12-0089
$54.95 USD

Sold individually

In stock Usually ships the same or next business day
Check model fitment View fitment
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Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
1979-83 Honda CB750 High Performance Kibblewhite Black Diamond Exhaust Valve ~ Replaces 14721-422-000
$54.95 USD
Description

Upgrade your DOHC CB750's exhaust with this Kibblewhite Black Diamond Exhaust Valve, replacing OEM #14721-422-000. Same Black Diamond process: stainless steel with special German surface treatment for superior wear, friction, and corrosion resistance. FEA-designed, flow-bench tested, one-piece forgings. Made in the USA. Fits the 1979-82 CB750 family and CB750SC Nighthawk.

Sold each, order the quantity you need.

Key Features
• Kibblewhite Black Diamond exhaust valve
• Replaces OEM #14721-422-000
• Black Diamond surface treatment
• Lightweight one-piece forging
• FEA-designed, flow-bench tested
• Made in the USA
• Honda part name: Valve, Ex

Fitment / Compatibility

• Honda CB750K (1979‑82)
• CB750F (1979‑82) Supersport
• CB750C (1980‑82) Custom
• CB750L (1979) Limited

• Honda CB750SC (1982‑83) Nighthawk

Part Number: 12-0089

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

Make Model Year
Honda CB750K Standard 1979
Honda CB750F Supersport 1979
Honda CB750L Limited 1979
Honda CB750K 1980
Honda CB750F 1980
Honda CB750C Custom 1980
Honda CB750K 1981
Honda CB750F 1981
Honda CB750C 1981
Honda CB750K 1982
Honda CB750F 1982
Honda CB750C 1982
Honda CB750SC Nighthawk 1982
Honda CB750SC 1983

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 many DOHC Honda CB750 exhaust valves are included and required?

One Kibblewhite Black Diamond exhaust valve is included. The 16-valve DOHC CB750 cylinder head uses eight exhaust valves, so eight are required to replace every exhaust valve.

Which Honda OEM number and CB750 models match this exhaust valve?

The valve replaces Honda OEM 14721-422-000 for the 1979-82 CB750K and CB750F, 1979 CB750L, 1980-82 CB750C and 1982-83 CB750SC Nighthawk.

What does Kibblewhite's Black Diamond treatment do for a CB750 exhaust valve?

The treatment improves surface wear resistance, reduces friction and increases corrosion resistance. The stainless-steel valve is a lightweight, one-piece forging designed and flow-bench tested by Kibblewhite.

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