GSXR Front End Swap

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10 Aug 2018 10:00 #788615 by dpivas7
GSXR Front End Swap was created by dpivas7
I have a 1982 KZ750LTD that I have been working on for almost a year now. I have replaced the rear stock springs with custom Hagons and now I am looking to upgrade the front suspension. I love the look of inverted forks so I really want to throw on a GSXR front end.

I am unsure of all the changes that I need to make in order to accommodate such a swap. I found a special made conversion stem along with steering bearings that I want to buy and I found an entire 1996 GSXR front end (fork, axle, triple tree, brake calipers). I've found some other '06 front ends that are a bit pricier but look better as well.

I have no idea what size the hub/axle are on the stock KZ750, but I am assuming it won't match the GSXR so I'll have to get a new front wheel as well (I have planned on getting new wheels anyways). Is this true? What other components may I need to replace in order to fit the front end?


Thanks for the help!

Current: '19 Harley Roadster, '72 XLCH, '84 GPz 550
Past: '84 GPz 550, '82 KZ750 LTD, '71 XLCH

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10 Aug 2018 10:19 - 10 Aug 2018 10:20 #788618 by davido
Replied by davido on topic GSXR Front End Swap
I think both 'phoenix fighter' and 'wiers' used GSXR front ends on their bikes (thoughI think they were both 1000ccs) Look up their build threads for more info.
I went with a ZX9R on mine as it was longer than the GSXR. I think it was the longest upsy-dupsy available at the time (from the jap bikes anyway). Even then,I ended up fitting fork extensions as there was bog all clearance under the exhaust ( around 8cm + - if I remember right)

www.kzrider.com/forum/11-projects/594313-csr1000-project-build
CB550 (1978)
CB500/4 (1972)*
KZ1000CSR (1981)
XT 600E (1999)
TDM900 (2003)
Last edit: 10 Aug 2018 10:20 by davido.

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12 Aug 2018 08:51 #788706 by dpivas7
Replied by dpivas7 on topic GSXR Front End Swap
Unfortunately, wiers bought his bike with the front end already swapped out! I will check out phoenix fighter though. Thanks!

Current: '19 Harley Roadster, '72 XLCH, '84 GPz 550
Past: '84 GPz 550, '82 KZ750 LTD, '71 XLCH

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10 Sep 2018 08:38 #790654 by dpivas7
Replied by dpivas7 on topic GSXR Front End Swap
I was able to score a straight, clean GSXR front end (USD fork, wheel, calipers, brakes, brake master cylinder, triple tree...) for $100 at a swap meet the other day!

My only concern though, was the guy did not know what year it came from exactly. He said maybe a 1993 GSXR. Anyone have experience with swapping this fork on a KZ750?

Current: '19 Harley Roadster, '72 XLCH, '84 GPz 550
Past: '84 GPz 550, '82 KZ750 LTD, '71 XLCH

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11 Sep 2018 09:10 - 11 Sep 2018 09:11 #790721 by 531blackbanshee
Replied by 531blackbanshee on topic GSXR Front End Swap
this thread goes over what it takes to convert the donor front end to fit the kz.
www.kzrider.com/forum/5-chassis/325862-triple-tree-custom-work
do you plan to use the gsxr wheel?
gsxr brakes?
what header do you plan to run?
these are all things that will need consideration.as the stock gsxr front end and wheel are going to be shorter than the kz stuff by 2/3 inches overall.

hth,

leon

skiatook,oklahoma 1980 z1r,1978 kz 1000 z1r x 3,
1976 kz 900 x 3
i make what i can,and save the rest!

billybiltit.blogspot.com/

www.kzrider.com/forum/5-chassis/325862-triple-tree-custom-work

kzrider.com/forum/5-chassis/294594-frame-bracing?limitstart=0
Last edit: 11 Sep 2018 09:11 by 531blackbanshee.

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11 Sep 2018 13:23 #790728 by dpivas7
Replied by dpivas7 on topic GSXR Front End Swap
I plan on using the whole front end. I don't like the idea of using the smaller wheel, but I'm kind of hosed so I will take the good with the bad. I'll have to get creative to try to maintain the steering geometry.

I was going to buy a custom triple tree from cognitomoto.com, but they are only for 1997-newer GSXRs. I will probably just weld on a spacer to my KZ steering stem to account for the change in length.

Current: '19 Harley Roadster, '72 XLCH, '84 GPz 550
Past: '84 GPz 550, '82 KZ750 LTD, '71 XLCH

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11 Sep 2018 15:13 #790730 by Scirocco
Replied by Scirocco on topic GSXR Front End Swap
Here some very helpful conversion guides for the Front End and Swing Arm.

This browser does not support PDFs. Please download the PDF to view it: Download PDF


This browser does not support PDFs. Please download the PDF to view it: Download PDF

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The following user(s) said Thank You: 2strokerider

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12 Sep 2018 07:23 - 12 Sep 2018 07:25 #790762 by old_kaw
Replied by old_kaw on topic GSXR Front End Swap
Here is a complete front end, located close to me in MO. It looks really heavy to me. Maybe it's just all of the junk on the handlebars. :-)

stlouis.craigslist.org/mpo/d/front-end-r...unny/6691281047.html

That also looks like a kaw engine with a supercharger rigged onto it.

1981 Kawasaki Kz1000K1
Located in the Saint Louis, Missouri Area.
Last edit: 12 Sep 2018 07:25 by old_kaw.

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