81 gpz swing arm

  • mc6767
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81 gpz swing arm

23 Mar 2010 14:16
#355673
Hi all,....I recently picked up a 81 gpz 1100....I would like a bigger back tire than stock....is there a painless bolt on solution? (bolt on wider swing arm?) thanks in advance.
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  • MFolks
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Re: 81 gpz swing arm

23 Mar 2010 14:27
#355676
Ask here:
www.americanclassix.com/swingarmKJSA900_150.html if they don't have what you need in stock,I'd think they can get it.
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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Re: 81 gpz swing arm

24 Mar 2010 09:38
#355823
Thanks for the reply....that swing arm looks nice.....I read somewhere guys were using the swing arm from a GSXR...I think 1980's....am I mistaken?

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Re: 81 gpz swing arm

24 Mar 2010 11:55 - 24 Mar 2010 11:58
#355837
mc6767 wrote:
Thanks for the reply....that swing arm looks nice.....I read somewhere guys were using the swing arm from a GSXR...I think 1980's....am I mistaken?

It is a swingarm from a GS1000 and it is a common up grade for KZ900/KZ1000...there should be plenty of threads on this site for you to data mine....for the GPz series, the common up grade is the ZRX-style swingarm (they are pricey)...see www.kipkawa.co.uk/ and look under J models
Michael
Victoria, Texas

1982 GPz750
1977 KZ1000A
1978 KZ1000A
1982 GPz1100
1975 Z2A
Last edit: 24 Mar 2010 11:58 by Mcdroid.

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  • otakar
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Re: 81 gpz swing arm

24 Mar 2010 13:38
#355855
Actually It is from the GS1100 that guys are using. It is a box Aluminium arm that is about 1.5-2" longer than the stock. Here is one on My GPZ.
448
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000

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Re: 81 gpz swing arm

24 Mar 2010 13:42 - 24 Mar 2010 13:44
#355856
It is not an EXACT drop in. There is some shimming required in the pivot area, but that is about all besides the longer rear axle. I am using a LTD 16" rear rim so I can put a wider tire on. I also just picke up a 18" front rim for it from a KZ1300. So I will mount that this weekend.


640
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Last edit: 24 Mar 2010 13:44 by otakar.

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Re: 81 gpz swing arm

24 Mar 2010 13:47
#355861
OH- I did forget to mention that you will require a set of Honda "Lead-wing" rear shocks. The mounts on the swingarm require clevis stile lower shock mounts. Also because the arm is a bit longer the Wing shocks are longer to compensate.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000

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Re: 81 gpz swing arm

25 Mar 2010 12:14
#356066
amazing...thanks again...what yr is the gs1100?

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  • otakar
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Re: 81 gpz swing arm

25 Mar 2010 12:43 - 25 Mar 2010 12:47
#356071
The box swing arm was on 1980-1983 GS1100E models. I built my GPz1100 from a 1981 KZ1000M (CSR) If you take a look at the bike of the month on the home page of KZR it gives you all of the specs of the bike. Also you can view the ongoing writeup on my thread.
kzrider.com/index.php?option=com_kunena&...w&catid=11&id=169462
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Last edit: 25 Mar 2010 12:47 by otakar.

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Re: 81 gpz swing arm

25 Mar 2010 12:50 - 25 Mar 2010 12:54
#356075
The 1100E swing arms are becoming harder and harder to come by. At one time you could get a nice one for about $125-$150. Now they are fetching as much as $350 or more.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Last edit: 25 Mar 2010 12:54 by otakar.

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Re: 81 gpz swing arm

26 Mar 2010 10:37
#356316
your bike is a masterpiece.....thanks for the info...I may pester you some more as I get into this. (if you dont mind) :)

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Re: 81 gpz swing arm

26 Mar 2010 11:36
#356322
I don't mind at all. Do it on the bike build link for the bike.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000

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