KZ750 forks on KZ250

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07 Apr 2015 01:55 #666917 by Irish Yobbo
KZ750 forks on KZ250 was created by Irish Yobbo
Hi all,

I'm in need of some new forks for my '85 KZ250 belt, but here in Australia, they are hard to come by. But some forks for a KZ750 with the front wheel and brakes has come up for sale locally. Is there any way to make these fit? This would be ideal, because they're cheap, local, and they're discs instead of drums.

I understand that the kz250 forks are 32mm and the kz750 forks are 36mm, but it does come with the triple clamp as well - would that fit on my current frame? Or is there another way?

1981 KZ750 LTD

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07 Apr 2015 05:30 - 07 Apr 2015 05:44 #666923 by martin_csr
Replied by martin_csr on topic KZ750 forks on KZ250
What KZ250 & KZ750? Some 250s have 31 mm forks.
You'll need to compare the various components of the steering stems & frame heads.
The 750H stem is 8-7/8" long (225mm) & the frame head is 7-1/2" L (190mm).

Resources for comparing stuff: Partzilla, All-Balls Racing, Z1Enterprises.com & eebbaayy pics.

To figure out if it will work, check to see if there's a tapered bearing kit that will mate the 750 steering stem to the 250. Also, compare the length of the steering stem or frame heads. I'd guess the 750 is longer, but a machine shop might be able to modify the steering stem to fit the 250.
Last edit: 07 Apr 2015 05:44 by martin_csr.

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07 Apr 2015 05:39 #666926 by TexasKZ
Replied by TexasKZ on topic KZ750 forks on KZ250
There are about a zillion discussion threads on this site about fork swapping. Feel free to read some of them.

It is very rare t o have a simple bolt on swap. Very, very rare. If you are lucky, it may require only different stem bearings. All balls has a pretty extensive conversion chart on its website. Feel free to check it out. In many cases, the steering stem will need to be swapped. In a few cases, serious machine work is needed. Gauges (clocks), hande bars, clearances when fully turned each direction, fork length and front wheel clearance at full compression are also to be considered.
Happy reading ......

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

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