Fork upgrade alternatives to swapping?

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08 Sep 2016 13:38 - 09 Sep 2016 06:42 #741576 by GPzMOD750
Fork upgrade alternatives to swapping? was created by GPzMOD750
It's getting colder and I'm trying to get s jump on plans to rebuild my dual shock GPz. I'm pretty sure I don't want to swap the forks or swing arm.

I have some ZRX shocks on it already. What would be the best way to freshen up and upgrade the front suspension without retrofitting something from a new model?
82 GPz750/KZ750R1
82 KZ1100A2
Last edit: 09 Sep 2016 06:42 by GPzMOD750.

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08 Sep 2016 13:51 #741580 by Julian_Boolean
Replied by Julian_Boolean on topic Re:Fork upgrade alternatives to swapping?
Hyper Pro springs and oil.
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08 Sep 2016 13:56 #741582 by martin_csr
Replied by martin_csr on topic Re:Fork upgrade alternatives to swapping?
Cartridge emulators are supposedly a very good upgrade. Racetech is the only place I've heard of that sells them.
1981 KZ650 Competition Sports and Road
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08 Sep 2016 18:26 #741625 by 650ed
Replied by 650ed on topic Re:Fork upgrade alternatives to swapping?
Start with the basics - when is the last time the fork oil was flushed out and replenished with the correct amount and weight of fork oil? If that is not done periodically the front forks will not perform well. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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08 Sep 2016 19:23 #741636 by SWest
Replied by SWest on topic Re:Fork upgrade alternatives to swapping?
Progressive fork springs.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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08 Sep 2016 21:08 #741647 by 80B4
Replied by 80B4 on topic Fork upgrade alternatives to swapping?
Race Tech emulators, inner and outer bushings, new correct rate springs, seals, wipers, and fluid. The RaceTech parts are very high quality. Have the steering head bearings been serviced?
1980B4 1000
1978 Z1R
1978 B3 750
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09 Sep 2016 06:12 #741679 by Kidkawie
Replied by Kidkawie on topic Fork upgrade alternatives to swapping?
Besides what was mentioned, a steering damper is always a plus.

Have you serviced the shocks? I found 2 blown bladders in mine.
1975 Z1 900
1994 KX250 Supermoto
2004 KX125

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09 Sep 2016 06:47 #741681 by GPzMOD750
Replied by GPzMOD750 on topic Re:Fork upgrade alternatives to swapping?
The only thing I've done is the seal on the one side.

It handled very well up to now so I've left everything else alone. But I'm going to go through it stem to stern this winter and make repairs and up grades that aren't too crazy or take away from the vintage appearance, hence the reason for not wanting to change the fork or swingarm.

My goal is a vintage twist on a street fighter.
82 GPz750/KZ750R1
82 KZ1100A2

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09 Sep 2016 06:51 #741682 by GPzMOD750
Replied by GPzMOD750 on topic Re:Fork upgrade alternatives to swapping?
And I have been thinking about a steering damper.
82 GPz750/KZ750R1
82 KZ1100A2

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09 Sep 2016 07:58 #741685 by Kidkawie
Replied by Kidkawie on topic Re:Fork upgrade alternatives to swapping?
You can use this part number for a replacement bladder: 120104600101

They are a little longer but work and aren't $100/ea from RaceTech.
1975 Z1 900
1994 KX250 Supermoto
2004 KX125
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10 Sep 2016 05:16 #741760 by GPzMOD750
Replied by GPzMOD750 on topic Fork upgrade alternatives to swapping?
Are the bladders for the shocks? I'm not having any issues there. or with the front either but I figured since I'm going to be doing a ton of work it'd be nice to bring my front end up to par of the rear.

The RaceTech site is confusing. Just a bunch of part numbers and specs. No actual cross reference to makes and models of bikes. Anyone know which emulator kit I would need?
82 GPz750/KZ750R1
82 KZ1100A2

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11 Sep 2016 06:10 - 11 Sep 2016 06:10 #741828 by Kidkawie
Replied by Kidkawie on topic Fork upgrade alternatives to swapping?
The bladders are for the shocks, they are known to go bad. If you dont have a nitrogen charge the bladder is split.

For the RT site, go to Product Search and select your bike info. www.racetech.com/ProductSearch/2/Kawasaki/GPz750/1982
1975 Z1 900
1994 KX250 Supermoto
2004 KX125
Last edit: 11 Sep 2016 06:10 by Kidkawie.
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