Topic: OEM Fork Tube Length -Help

[matt376]

I've searched the manuals and the forum and can't seem to find a specific measurement.  I recently purchased a CB750 K4 and it appears that the previous owner installed extended fork tubes though I haven't taken them apart yet to see if he just overfilled the forks to extend them.  Either way, the tubes are corroded pretty bad and need to be replaced.  I picked up another set of forks at the time of purchase but I am unsure what year they are from.  They clearly have a slightly different lower than mine...  can anybody tell me the fork tube length for the K4 model and are there any differences in fork tubes in the later K and F models?

[nancy]

Hi Matt,
I can't tell you the exact facts - but my bike is a K2 and has K7 forks. These forks measure 355mm from the tip of the bottom U bracket up to the flat top - hidden by the top black boot/cover...(underneath my fork gaitor). Never had this off and assume it is a dust cover for the seal. Not sure what the actual measurement for the bare tube would be however. Hope that's some help till someone else chimes in.
regards
Mark

[matt376]

It's a starting point.  Thanks!

[CBNJ74]

I've searched the manuals and the forum and can't seem to find a specific measurement.  I recently purchased a CB750 K4 and it appears that the previous owner installed extended fork tubes though I haven't taken them apart yet to see if he just overfilled the forks to extend them.  Either way, the tubes are corroded pretty bad and need to be replaced.  I picked up another set of forks at the time of purchase but I am unsure what year they are from.  They clearly have a slightly different lower than mine...  can anybody tell me the fork tube length for the K4 model and are there any differences in fork tubes in the later K and F models?

I'd like to know the answer to the question as well. I just picked up and installed a set of standard length (22 13/16) tubes from CycleX. I'm being told now on another forum that it's off by 1"