Reply To: 2010 Gt650r fork preload adjusters broken?
You can put a whole R6 front end fork as the older r6 should have 51mm tubes but….the issue is that the r6 wheel won’t be compatible with the Hyosung speedo drive, so you may have to use the GT rim and some possible alterations to the spaces to make sure everything aligns for the calipers not to grind the discs. Also you will end up using a whole R6 brake system from master cylinder down to the calipers themselves as Hyosung calipers won’t fit correctly on R6 forks unless you modify mounts!
It is possible you may have to replace the whole “Top Nut” section of the fork if keeping the 650 0ne (not unless you strip the fork and see a part broken inside (one way to find out!)