83 GPZ 750 air fork rebuild/delete

  • notgoodwithnames
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83 GPZ 750 air fork rebuild/delete

23 May 2026 14:10
#924177
Hey folks, as part of my personal resto project I'm looking at new front and back suspension, I've already decided on fitting a ZR7 shock to the rear based on info here and 750turbo but I'm seeing a lot of differing info on the method for converting the front to straight rates. Before I go and buy a bunch of stuff and spend a few 12 packs and hours of time on this, is there any reason why I shouldn't/couldn't delete the crossover, run a line directly to each caliper, plug the fork hole with either a set screw or weld, and plate over the holes at the bottom? 

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  • TexasKZ
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Re: 83 GPZ 750 air fork rebuild/delete

23 May 2026 16:29
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I assume you are talking about the anti-dive braking circuitry at the bottom of the forks. If so, many folks say it is not worth the trouble and ditch it. However, if you like the way it performs, then there is no shame in keeping it.
If, on the other hand, you are talking about the air adjustable feature at the top of the forks that was popular on the LTD and CRS series (I did not know it came on the GPz, too) then I vote for some quality springs and fork oil and ditching the air assist feature. The system is easy to over fill and it puts unnecessary extra pressure on the seals.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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  • Nessism
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Re: 83 GPZ 750 air fork rebuild/delete

Yesterday 17:49
#924180
I ditched the air assist on my 750, and installed Sonic straight rate springs instead.  A huge improvement.

For the anti-dive, you can remove the mechanisms and fashion a blank off plate.  Just be sure to mill a connecting passage between the two holes in the fork, otherwise the damping will be very stiff.

This is what I made for a Suzuki GS750.

[img
anti dive plates by nessism , on Flickr

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  • notgoodwithnames
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Re: 83 GPZ 750 air fork rebuild/delete

Yesterday 17:54
#924181
I had a feeling there was something I'd be missing, appreciate the catch

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