38mm forks

Does anybody know if something more modern would fit on my 78 kz650? Looking for a more modern front suspension.

Try doing a KZR search for Modern Forks - there are a number of topics.
This one has photos - click! . The front end stuff is from an 02 ZX7.

Just in case... when doing the conversion, typically you install the complete front end, not just the forks. I don't know that much about it, but in some cases to mate the new triple to the frame head I believe it's just a simple matter of getting steering bearings of the correct size... don't quote me on that, though. hee.

If your forks are stock, then they are 36mm, 38mm started with the 1981 1000/1100 models.

There are a bunch of KZ's with later model forks on them, just look around KZR.

The previous owner had used some stuff from a 1000 I believe. The swing arm is defiantly not stock either. Carbs as well

You'll DEFINITELY need to find out what you have first, but I am getting ready to rebuild my stock forks with progressive springs and race tech gold cartridge fork emulators...Supposed to get one REAL close to modern "upside down" (USD) forks. And don't forget the rear shocks!

Grumpy Ole Artist wrote: You'll DEFINITELY need to find out what you have first, but I am getting ready to rebuild my stock forks with progressive springs and race tech gold cartridge fork emulators...Supposed to get one REAL close to modern "upside down" (USD) forks. And don't forget the rear shocks!

+1. I'm still running my stock forks and they work very well. However, the stock rear shocks were not great on day one and after 10,000 miles were terrible. Having owned my '77 KZ650 since it was new I found the rear shocks to be the weakest component on the bike. The good news is that there are some really good replacements available from quality manufacturers. Ed

www.allballsracing.com/index.php/forkconversion