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1973 Honda CB350F0 Valve Springs

The valve-spring choice here is an eight-spring Kibblewhite kit for the 1973 CB350F0 four-cylinder engine. It uses chrome-silicon wire with heat treatment and shot peening. Choose it as part of a planned cylinder-head build with the cam and related components identified.

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Honda CB400F CB350F high performance kibblewhite valve spring set

1972-77 Honda CB400F / CB350F High Performance Kibblewhite Valve Spring Set

$139.95 USD
12-0090
Rebuild your CB350F or CB400F Supersport top-end with this Kibblewhite High-Performance Valve Spring Set of 8. Same premium chrome silicon construction, heat-treated and shot-peened,...
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1973 Honda CB350F0 · Valve Springs Buying guide

Choose springs as part of the whole top end

The kit gives you a defined spring count and material. Camshaft, installed-height and related component checks still belong in the build plan, especially when the engine already contains non-standard parts.

Parts to consider

1972-77 Honda CB400F / CB350F High Performance Kibblewhite Valve Spring Set Kibblewhite valve springsEight-spring kit made in the USA from heat-treated, shot-peened chrome-silicon wire.View part

What the kit gives you

Kibblewhite makes this eight-spring set in the USA using heat-treated, shot-peened chrome-silicon wire. Before ordering for a modified head, obtain the manufacturer’s setup information and confirm which related components the builder plans to retain. That keeps the spring purchase tied to a defined build.

Keep the build specification together

Before ordering for a modified engine, identify its camshaft and retainers and have the spring arrangement checked as a complete system. Keep the manufacturer’s spring information with the Honda service data so the person assembling the head can confirm the required setup.

Common questions

How many springs are supplied?

The package contains eight springs. Use that as the supplied quantity, then check the head’s complete spring and retainer arrangement when planning the work.

Can I choose these springs just by their free length?

Free length alone does not confirm suitability for a camshaft and cylinder-head combination. Have the builder check the manufacturer’s setup requirements and the other components before assembly.

Do these springs allow a higher rev limit?

No higher operating limit is established here. A spring change alone does not define a safe engine speed; follow the specifications for the complete engine build.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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