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1985 Honda CB450SC Nighthawk Headlamp Clamp Measurements

For headlight mounting changes on your 1985 CB450SC Nighthawk, start with the outside diameter where the bracket will clamp. The Tommaselli-style set covers 32–34mm tubes and includes rubber inserts. Verify the fitted forks and retained lamp arrangement before choosing the bracket set.

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Honda CB450 CB400 CB360 tommaselli type headlight bracket set 32-34mm

Honda CB Tommaselli Type Headlight Bracket Set ~ 32-34mm

$39.95 USD
09-0015
Fit the Tommaselli look to your smaller-bore Honda with these 32-34mm Tommaselli-Type Headlight Brackets, supplied with rubber mount inserts. Sized for 33mm fork tubes...
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1985 Honda CB450SC Nighthawk · Headlamp, Bulbs & Parts Buying guide

Measure the actual clamping area before selecting brackets

These brackets are listed for the 1985 CB450SC and the specified 32–34mm tube range. Their rubber inserts are included. A changed fork or headlamp needs its own assessment rather than relying on the motorcycle model alone.

Parts to consider

Honda CB Tommaselli Type Headlight Bracket Set ~ 32-34mm Tommaselli-style clamp setThe bracket set is sized for 32–34mm tubes, with listed Honda applications using 33mm tubes. Rubber mounting inserts are supplied with the set.View part

Check replacement forks at the location that will carry the clamp

The listing specifies the outside diameter at the actual clamping location as the measurement to check. A model name cannot establish that size after a fork change. Compare the fitted tubes with the 32–34mm range before committing to this bracket set for the mounting work.

Plan the retained lamp separately from the fork-clamp specification

The written specification establishes the tube range and included rubber inserts, but gives no headlamp side-mount spacing or bucket-clearance measurement. Check the retained lamp and its intended mounting arrangement separately. The bracket application alone should not be treated as a dimensional guarantee for a changed headlight.

Fork Clamp Selection FAQs

How can I check bracket suitability after a previous owner changed the forks?

Measure tube outside diameter exactly where the clamp will sit, then compare it with the stated 32–34mm range. The listed Honda applications use 33mm tubes, but that description does not measure replacement forks already fitted to your motorcycle.

Should I order rubber liners separately for this bracket set?

Rubber mounting inserts are included with the Tommaselli-style set and go between the brackets and compatible tubes. Account for those supplied pieces before buying extra liners, while still checking the fitted tube diameter against the specified range.

Which lamp-fit details remain to check once the fork diameter matches?

Confirm the retained headlamp’s mounting arrangement and available clearance separately. The listing states the fork-tube range and rubber inserts, but provides no headlamp side-mount spacing or bucket dimensions. Matching the clamp diameter alone does not establish those lamp measurements.

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