Welcome, Guest
Username: Password: Remember me

TOPIC:

USD Forks 02 Jan 2023 12:15 #878457

  • supermotobobby
  • supermotobobby's Avatar Topic Author
  • Offline
  • User
  • Posts: 6
  • Thank you received: 0
Hello, I have an 82 GPZ 750 that I want to put GSXR 750 forks on and was wondering if I can keep the stock wheel?

Please Log in or Create an account to join the conversation.

USD Forks 02 Jan 2023 14:02 #878461

  • zed1015
  • zed1015's Avatar
  • Offline
  • User
  • Posts: 2885
  • Thank you received: 1441
Not a straight swap but anything can be made to fit anything else if you have the correct tools.
Spindle size/wheel bearing size, wheel spacers, disc/caliper mounts and spacing along with speedo drive and larger wheel diameter to mudguard distance are the main points that will need addressing.
Access to a machine shop will make things easier.
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
kzrider.com/forum/23-for-sale/611992-air-corrector-jets-





Please Log in or Create an account to join the conversation.

Last edit: by zed1015.

USD Forks 02 Jan 2023 14:37 #878463

  • Ojisan rider
  • Ojisan rider's Avatar
  • Offline
  • Sustaining Member
  • Posts: 359
  • Thank you received: 63
It'll fit if you spent time and money. BUT!

Our front wheel is 19 incher and narrow. Very narrow by today's standard. Gixer have much wider wheel, specially from USD forks. Also, if I'm not mistaken, USD fork equipped Gixers have 17 up front (someone correct me if I'm wrong). Diameter may not be that bad, but the narrow front rim gonna look funny IMO. Also, another thing to consider is the front brake. I really doubt stock brake setup will work. You probably need to get bigger disks or get the custom caliper brackets. 

Lotta work there to keep the stock wheel.
82' KZ750-R1 cafe racer style. Clip-on, Rear set, Fork-Brace, Mikuni Flat-slide (forgot the size), Kerker.
84' GPz750 (basket case). everything are in pieces.
89' ZX750-H1 (ZX-7 Ninja). Resurrection project are on going with my KZ750. Everything is stock.

Please Log in or Create an account to join the conversation.

USD Forks 03 Jan 2023 04:24 #878474

  • Warren3200gt
  • Warren3200gt's Avatar
  • Offline
  • User
  • Posts: 1435
  • Thank you received: 648
Got these for Xmas if they are any good to you!
 

Z1000J2 somewhat modified!

Attachments:
The following user(s) said Thank You: slayer61, Wookie58

Please Log in or Create an account to join the conversation.

USD Forks 04 Jan 2023 10:19 #878522

  • slayer61
  • slayer61's Avatar
  • Offline
  • User
  • KZR FLAG RELAY CARRIER #62
  • Posts: 874
  • Thank you received: 256
 Those forks are just the ticket!

I had a similar project a couple of years ago upgrading from 37 mm OEM forks to RWU GSXR forks and keeping my "original" wheel. It's "doable" but perseverance is a must

 
Don't be ridiculous! It's only a flesh wound!

Wife's little bike... 1984 GPZ 550 Kerker and DynaJet stage I kit
Wife's BIG bike...... 1981 GPZ 1100 Kerker and factory FI Mikuni RS34s W/ K&N pods
Attachments:
The following user(s) said Thank You: Wookie58

Please Log in or Create an account to join the conversation.

USD Forks 18 Jan 2023 17:42 #878972

  • B-K-Mod
  • B-K-Mod's Avatar
  • Offline
  • User
  • Hope to ride 'till i die
  • Posts: 31
  • Thank you received: 9
Hi supermotobobby,
I am doing about the same mod to my '80 Kz750, '94 GSX-R750 complete front end swap, for start.
Here's the begining. 
1980 Kz750e
1981 Kz750e
1993 ZX6e
2019 Z900RS CAFÉ
Attachments:

Please Log in or Create an account to join the conversation.

USD Forks 18 Jan 2023 21:07 #878977

  • Stereordinary
  • Stereordinary's Avatar
  • Offline
  • User
  • Posts: 346
  • Thank you received: 127
Think you could get some measurements off those forks? I've been thinking about using a similar era Showa fork for my bike.
A breeze from the west.
‘90 ZR550 Zephyr (x2)

Please Log in or Create an account to join the conversation.

USD Forks 18 Jan 2023 21:15 #878978

  • Stereordinary
  • Stereordinary's Avatar
  • Offline
  • User
  • Posts: 346
  • Thank you received: 127
I've lamented this topic for a while...  www.kzrider.com/forum/5-chassis/616922-usd-fork-lengths
A breeze from the west.
‘90 ZR550 Zephyr (x2)

Please Log in or Create an account to join the conversation.

USD Forks 19 Jan 2023 14:08 #879016

  • B-K-Mod
  • B-K-Mod's Avatar
  • Offline
  • User
  • Hope to ride 'till i die
  • Posts: 31
  • Thank you received: 9
Hi Stereordinary,
These are te mesurments i took of my 1980 Kz750 
As you can see on the left side of the picture with the green check mark what is involve.

Attachment not found

Attachment not found

Attachment not found

1980 Kz750e
1981 Kz750e
1993 ZX6e
2019 Z900RS CAFÉ

Please Log in or Create an account to join the conversation.

USD Forks 19 Jan 2023 14:09 #879017

  • B-K-Mod
  • B-K-Mod's Avatar
  • Offline
  • User
  • Hope to ride 'till i die
  • Posts: 31
  • Thank you received: 9
1980 Kz750e
1981 Kz750e
1993 ZX6e
2019 Z900RS CAFÉ
Attachments:

Please Log in or Create an account to join the conversation.

USD Forks 19 Jan 2023 17:14 #879030

  • Stereordinary
  • Stereordinary's Avatar
  • Offline
  • User
  • Posts: 346
  • Thank you received: 127
Fascinating! So it looks like you measured everything out, and drew it to scale then you were able to calculate the difference in rake/trail right? Very interesting. 

That’s been one of my major concerns is making sure I don’t ruin the handling of the bike. 

Mostly what I meant was if you had measurements for like the stanchion diameter, overall length, axle diameter, etc. But this maybe even more helpful, so thank you. 
A breeze from the west.
‘90 ZR550 Zephyr (x2)

Please Log in or Create an account to join the conversation.

USD Forks 28 Feb 2023 23:01 #880913

  • Stereordinary
  • Stereordinary's Avatar
  • Offline
  • User
  • Posts: 346
  • Thank you received: 127
Started thinking again about how to fit USD forks on my bike. Took the advice/suggestion of B-K-Mod and started drawing dimensions out full scale. Haven’t gotten very far in that yet, mostly due to time restraints but also because I think one of my measurements is off, and I’m not sure which. More on that later, I’m sure. 

But I also had this thought about how I have been obsessing over finding just the right set of forks. Like as if there is a unicorn set that would make the swap plug and play. But it just seems like that’s never gonna happen, so I asked myself well if I’m going to have to have a custom axle, and maybe custom triple trees made regardless, what forks do I really want on there? Like basically what forks do I think look the coolest? And then also, what kind of cost am I looking at if I open up the search like that? 

Now, I would love to have been able to just plop down some cash on some brand new Öhlins or Showa forks, but I don’t have that kind of money. Especially when we are talking about an experiment that might not even work out. So I just kind of started browsing around eBay at used forks. First, I was pleasantly surprised that some of the prices were pretty cheap. Then somehow my search started coming back around to the same year/make/model over and over: the ‘03-‘04 Kawi ZX6R. 

As luck would have it, a good looking pair in my price range was listed for sale by my local salvage yard, so I walked over and saw them in person. Offered to pay cash and saved even more money. So for $200 out the door I’ve now got a complete ‘03 ZX6R front end to mess around with. 

 
A breeze from the west.
‘90 ZR550 Zephyr (x2)
Attachments:

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum