From the Jap4 website


Adjustable fork tops to give an extra 4mm preload and 20 clicks of rebound adjustment (will not work with 89 NC30 or and R spec NSR) £139.00

Does the 23 have rebound adjustment?

NC23 has no damping adjustment, or even preload (just air pressure).
Why not just fit NC29/NC30 fork tops to give preload adjustment?

Yakama wrote:From the Jap4 website


Adjustable fork tops to give an extra 4mm preload and 20 clicks of rebound adjustment (will not work with 89 NC30 or and R spec NSR) £139.00

For that price I would fit CBR600RR forks.. or better change spring and oil..that simply fitting fork top.. Are they worth it price ?

Thanks guys. I am going to change the forks and oil. Already bought from mr France. Just wondered if these would fit

The springs and oil from GF will sort you out, get them fitted and check sag before deciding if you need/want preload adjusters.

I have some preload adjusters from an nc30 if your interested.. also the internals but they are slightly bent..

if he dont want them .i will £cheep ya