I never knew they did one for the NC23 and it is not listed on the 88 HRC parts manual I have so I suspect that this was intended for the 89 model that was restricted and that there must be an 89 HRC parts manual aswell.
And I know it is just a derestrictor and this can be done many other ways but I bought it as I was curious and have never seen one before (and I'm a bit of an HRC slut I must admit)

