Longer shocks for 1982 GPz750?

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12 Mar 2016 09:36 - 12 Mar 2016 17:49 #715098 by GPzMOD750
Longer shocks for 1982 GPz750? was created by GPzMOD750
Now that I have my lower bars, headlight and instrument cluster, I'd like to raise the rear on my ugly duckling a little bit. I know it will affect my geometry but my lardo, 260 lb., 6' 3" frame will probably counteract it some. From what I've gathered the nominal OEM length is 335 mm (13.25") are there any bolt on 365-375 mm (14-14.5") replacements available?
Last edit: 12 Mar 2016 17:49 by GPzMOD750.

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12 Mar 2016 11:10 #715105 by Nessism
Replied by Nessism on topic Longer shocks for 1982 GPz750?

GPzMOD750 wrote: Now that I have my lower bars, headlight and instrument cluster, I'd like to raise the rear on my ugly duckling a little bit. I know it will affect my geometry but my lardo, 260 lb., 6' 3" frame will probably counteract it some. From what I've gathered the nominal OEM length is 135 mm (13.25") are there any bolt on 165-175 mm (14-14.5") replacements available?


I don't know man, those 750's handle so sweet with the stock geometry you gotta be careful to not mess it up. Progressive shocks for your bike are listed as 13.5" but I believe that are actually closer to 13.75". I wouldn't go with anything longer (my opinion).

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12 Mar 2016 16:25 #715143 by TexasKZ
Replied by TexasKZ on topic Longer shocks for 1982 GPz750?
+1
I think you would be better off with correct length shocks with springs appropriate to your weight. Progressive, Hagon and others would be happy to fix you up.

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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13 Mar 2016 08:03 - 13 Mar 2016 09:32 #715200 by GPzMOD750
Replied by GPzMOD750 on topic Longer shocks for 1982 GPz750?
I really don't see the harm in putting on approx 1" longer shocks. The difference can't be that much than those flipping eccentrics that have them. I even see they make extenders that have a Clevis and eye to get a little more length.
Last edit: 13 Mar 2016 09:32 by GPzMOD750.

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  • ThatGPzGuy
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13 Mar 2016 09:07 #715209 by ThatGPzGuy
Replied by ThatGPzGuy on topic Longer shocks for 1982 GPz750?
The ZRX shocks are a bit longer. I didn't notice a huge difference but it did quicken the steering a little. The most bang for the buck was the cartridge emulators and Progressive springs

Jim
North GA
2016 Yamaha FJR1300ES
1982 GPz750 R1
1974 Kawasaki H1
1976 Kawasaki KZ400
1979 Yamaha XS650 cafe'
2001 KZ1000P
2001 Yamaha YZ426
1981 Honda XR200 stroked in an '89 CR125 chassis
1965 Mustang
1967 Triumph GT6
1976 Bronco
"If you didn't build it, it's not really yours"
The following user(s) said Thank You: GPzMOD750

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13 Mar 2016 09:44 - 13 Mar 2016 09:45 #715212 by GPzMOD750
Replied by GPzMOD750 on topic Longer shocks for 1982 GPz750?

ThatGPzGuy wrote: The ZRX shocks are a bit longer. I didn't notice a huge difference but it did quicken the steering a little. The most bang for the buck was the cartridge emulators and Progressive springs

Well crap! Why didn't I think of that? I guess I assumed the ZRX was a monoshock. I looked it up and sure enough it's a 365 mm long shock. I think I'm going to buy or build the 30 mm extenders first and see how I like it and if I do I'll get the ZRX spec shocks for later.
Last edit: 13 Mar 2016 09:45 by GPzMOD750.

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  • ThatGPzGuy
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13 Mar 2016 10:09 #715214 by ThatGPzGuy
Replied by ThatGPzGuy on topic Longer shocks for 1982 GPz750?
It's a common mod for us doing the ELR. You have to lose the helmet lock but other than that the hardest part is finding a set for a decent price. I lucked out and paid less than $150 but I've seen them go for twice that.

Jim
North GA
2016 Yamaha FJR1300ES
1982 GPz750 R1
1974 Kawasaki H1
1976 Kawasaki KZ400
1979 Yamaha XS650 cafe'
2001 KZ1000P
2001 Yamaha YZ426
1981 Honda XR200 stroked in an '89 CR125 chassis
1965 Mustang
1967 Triumph GT6
1976 Bronco
"If you didn't build it, it's not really yours"

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13 Mar 2016 13:41 #715239 by GPzMOD750
Replied by GPzMOD750 on topic Longer shocks for 1982 GPz750?
I just checked my bike budget and it's bust. Looks like DIY spacers for now.Shouldn't take more than an hour or so to knock some out. I'll just shamelessly use this pic for a print.

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21 Mar 2016 18:42 - 21 Mar 2016 18:54 #716641 by GPzMOD750
Replied by GPzMOD750 on topic Longer shocks for 1982 GPz750?
Home brew, 30mm extensions. Good thing I didn't order any from ebay they would have fit pretty sloppy. I actually like them. bike handles well, It got me to the top of the canyon nicely.







I'll keep an eye out for a good deal on a set of actual 365mm shocks preferably piggy-backs. Except standard coil overs would look retro which is a bit of what I'm looking for.... Great another decision to make.
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Last edit: 21 Mar 2016 18:54 by GPzMOD750.

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