SOHC.co.uk Forums > CB500/550

Measurements for the rear indicator brackets

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Oddjob:
35mm x 16mm is the grab rail hole size Alex. Sounds like your grab rail is the wrong one.

alexdecker:

--- Quote from: Oddjob on January 30, 2023, 08:03:38 PM ---35mm x 16mm is the grab rail hole size Alex. Sounds like your grab rail is the wrong one.

--- End quote ---

Damn. Yet another thing I have to source. This bike is killing me 😳😂 Well at least it would seem to be the right brackers. And I assume that if the stems match the brackets, they are correct as well. Saw a reproduction set on 4into1.com, and they claim that the 550F stem was supposed to be 22mm in diameter. Mine is 14.

Thank you for taking the time to measure it!

Oddjob:
You're grasping the wrong end of the stick there Alex. There are 2 types of indicators fitted to the 550 in general. The smaller type which is what your pic shows and a much larger type which is what shows on 4into1.com, those are the USA market type indicators, they are bigger in diameter and also in stem size. That type of indicators were commonly found on the UK version of the CB550K3, not sure if they were also found on European versions.

I might have a spare of rear stems that will suit your existing grab rail, I found them a few hours ago when I was looking for something else, might even have some front stems as well, both brand new if I can find the front ones.

Have you got any of the rubbers that fit your existing grab rail? if so measure the holes width and the hole sizes etc.

alexdecker:

--- Quote from: Oddjob on January 30, 2023, 09:21:53 PM ---You're grasping the wrong end of the stick there Alex. There are 2 types of indicators fitted to the 550 in general. The smaller type which is what your pic shows and a much larger type which is what shows on 4into1.com, those are the USA market type indicators, they are bigger in diameter and also in stem size. That type of indicators were commonly found on the UK version of the CB550K3, not sure if they were also found on European versions.

I might have a spare of rear stems that will suit your existing grab rail, I found them a few hours ago when I was looking for something else, might even have some front stems as well, both brand new if I can find the front ones.

Have you got any of the rubbers that fit your existing grab rail? if so measure the holes width and the hole sizes etc.

--- End quote ---

Ah, that makes sense! Thanks for that! I think I will try and source a proper grab rail instead of replacing the stems, as the grab rail seems to be the one out of place. If I can find one that is. A quick google search tells me they are rather rare it would seem. Find a reproduction model on eBay, but would be nice to find something original…

mickwinf:
Ok can you confirm that the stems you have fit on those brackets? if the locating peg and the mounting screw hole line up then they are correct for the 550, therefore the grabrail is incorrect. However all 550 f1 and f2 use the larger hole so your rail must be off an earlier model. now i do have a grabrail with the correct size holes from the earlier k1 k2, which looks identical to the 500 except for the bigger indicator mount holes. Depends on if you want original or not as the rail on the f is a different shape

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