93 CR 250, Factory KTM WP forks

xotom125
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170
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10/15/2012
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ES
4/13/2014 10:12am Edited Date/Time 5/5/2019 6:15pm
Just bought this tired 93, CR250 for 300 Euros, started stripping it down and thought as as joke being as ive got a set of SXS factory clamps, and forks hanging around, i'd see how much work it would be to fit them in.
And guess what!
THEY GO STRAIGHT IN !!!!
they only need a pair of steering stops tapping in and there done.
Bearings are exactly the same, shaft length too.
Got the billet caliper too

I will keep updating the rebuild with pics











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4/13/2014 12:39pm
Niiiiiiice. I didn't even consider this with my build, and I have an EXC sitting there too.
xotom125
Posts
170
Joined
10/15/2012
Location
ES
4/13/2014 2:17pm
I did it with no real expectations of it being
Even close!
Getting frame welded up and powder coated, will start fitting it up next week

The Shop

4/14/2014 12:16am
They're all interchangeable (at least for everything 07 onwards anyway - probably the older stuff too) there is a difference in fork offset between models however.
xotom125
Posts
170
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10/15/2012
Location
ES
4/14/2014 12:26am
They were from 08, sxsf 250.
Same diameter as standard sx
So easy enough to find sx stuff cheap.
AK74
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371
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10/2/2008
Location
GB
4/14/2014 4:48am
Any chance you could try them in your '91 CR125, as I'd love to know if this is also a possible fitment?!
xotom125
Posts
170
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10/15/2012
Location
ES
4/14/2014 5:46am
Ill measure the stock length,
If the bearings are the same for1991 cr125. And 93 cr250 which im sure they are!
They should go in no probs,
AK74
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371
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10/2/2008
Location
GB
4/14/2014 7:09am
xotom125 wrote:
Ill measure the stock length, If the bearings are the same for1991 cr125. And 93 cr250 which im sure they are! They should go in no...
Ill measure the stock length,
If the bearings are the same for1991 cr125. And 93 cr250 which im sure they are!
They should go in no probs,
Thanks, that's much appreciated.
xotom125
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170
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10/15/2012
Location
ES
4/14/2014 12:58pm Edited Date/Time 4/14/2014 2:01pm
Measured head stock lengths.
Same,
Bearings look same,
Should go straight in.
AK74
Posts
371
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10/2/2008
Location
GB
4/14/2014 2:20pm
Splendid! Now to find a donor front end.
4/15/2014 12:46am Edited Date/Time 4/15/2014 12:47am
That's pretty cool. I don't know much about the newer KTMs with WP forks, how do they compared to the newer Honda Showa forks ?
4/15/2014 1:05am Edited Date/Time 4/15/2014 1:23am
I have ridden a lot of KTM's with the closed cartridge forks, and race an '09 200 EXC with the open cartridge forks (I used to sell KTM for a living).
They're both really good forks, but they do like to eat fork seals compared to Jap stuff. I've just switched over to SKF blue seals in the KTM, but they seem no better despite the hype.

At 12.5 stone (175lbs) plus kit, I find everything works quite well from the crate. After 5 years of racing, my setup hasn't changed much from stock.

I have to use a harder high-speed shim stack in my forks for the bigger hits on motocross sections, which isn't required with the closed-cartridge type forks in the SX and later XC models.

I'm not one of the real fast guys however. 2nd clubman last year in the hare and hounds championship I raced. (Normally finish between top 5 and 10%)
For someone middle-of-the-road like me, they're great.
Monk
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866
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1/11/2017
Location
CA
5/4/2019 6:29pm
Did you ever ride the bike with the KTM front setup?
Bearuno
Posts
4121
Joined
6/28/2014
Location
AU
5/5/2019 6:08pm Edited Date/Time 5/5/2019 6:16pm
Are you just fiting the inner bearings from the KTM into the existing cups in the CR frame?

I fitted a WPCC front end into a CR500, and the bearings are different. So it required machining of an inner spacer, top and bottom, and a change of top bearing to a later Honda one. I fitted the WPs to get the benefit of the 18/20 mm offset ( axle to central line of fork leg were the same dimension on the WPs I used) as against the std 24mm, plus that, once the CCs are made into a True CC - they sure as hell aren't as std - they are a Very good fork.

KTM bearings are 29mm ID X 50.25mm OD X 15mm . Your 93 CR Bearings are listed as 30mm x 51 X 15. So, you must have done what I referred to in the first sentence. Please, be Very careful, as there may be differences in the taper of the cups to inner bearings that could lead to a disaster.

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