GPX250 Suspension

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GPX250 Suspension

Postby gpxpunk » Wed Nov 12, 2008 10:29 am

Hi all,

Anybody know of anybody putting in harder suspension into GPX250's, due to shitty stock ones. also pricing if any.

Cheers
Dave :twisted:
1987 GPX250R. memories
2002 ZX7R . sold!!!!

I want My 7r BACK!!!!!!! Grrrrrr
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Re: GPX250 Suspension

Postby MadKaw » Wed Nov 12, 2008 10:38 am

80 cents for the preload and $10 for heavier oil.. :-)

Remove the fork caps, drain the fork oil and replace it with 20 weight oil (I think its 15 std).
Before you put the caps back on, put 2 or 3 20 cent coins as spacers on top of the spring washers (under the caps).

This will increase preload and damping on the forks, which, I think, are way to soft std...

Thats what I did to the wifes gpx and zzr250.

The rear.... you will have to get the shock rebuilt if its a problem, but I've found the front to be the biggest problem.
Dave
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95 ZXR750R M Race Bike - No. 75
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Re: GPX250 Suspension

Postby gpxpunk » Wed Nov 12, 2008 12:12 pm

MadKaw wrote:80 cents for the preload and $10 for heavier oil.. :-)

Remove the fork caps, drain the fork oil and replace it with 20 weight oil (I think its 15 std).
Before you put the caps back on, put 2 or 3 20 cent coins as spacers on top of the spring washers (under the caps).

This will increase preload and damping on the forks, which, I think, are way to soft std...

Thats what I did to the wifes gpx and zzr250.

The rear.... you will have to get the shock rebuilt if its a problem, but I've found the front to be the biggest problem.



yeah i know the front end is getting done very soon, but yeah my fat arse makes the back end too low and soft, had a real bad problem keeping traction on sunday on the way to from pits, kept jumping around, and bottoming out on me.
1987 GPX250R. memories
2002 ZX7R . sold!!!!

I want My 7r BACK!!!!!!! Grrrrrr
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Re: GPX250 Suspension

Postby gpxpunk » Wed Nov 12, 2008 12:20 pm

Do i need to replace seals or anthing?
1987 GPX250R. memories
2002 ZX7R . sold!!!!

I want My 7r BACK!!!!!!! Grrrrrr
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Re: GPX250 Suspension

Postby Disco » Wed Nov 12, 2008 12:39 pm

gpxpunk wrote:Do i need to replace seals or anthing?

I have a treadmill for sale if your interested? ;) :lol: :lol:
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Re: GPX250 Suspension

Postby gpxpunk » Wed Nov 12, 2008 12:54 pm

DISCO wrote:
gpxpunk wrote:Do i need to replace seals or anthing?

I have a treadmill for sale if your interested? ;) :lol: :lol:



hahaha, yeah already got one of those, and a rower and a bike and weight station and free weights and ab machines and a few other goodies. it always helps when your a trainer. :twisted: ;)
1987 GPX250R. memories
2002 ZX7R . sold!!!!

I want My 7r BACK!!!!!!! Grrrrrr
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Re: GPX250 Suspension

Postby MrWasabi » Wed Nov 12, 2008 3:32 pm

MadKaw wrote:80 cents for the preload and $10 for heavier oil.. :-)

Remove the fork caps, drain the fork oil and replace it with 20 weight oil (I think its 15 std).
Before you put the caps back on, put 2 or 3 20 cent coins as spacers on top of the spring washers (under the caps).

This will increase preload and damping on the forks, which, I think, are way to soft std...

Thats what I did to the wifes gpx and zzr250.

The rear.... you will have to get the shock rebuilt if its a problem, but I've found the front to be the biggest problem.


how did Jus or yourself find the front end after 20 weight oil and 3 20c pieces in the forks?

Ive got the rear on the hardest setting and im good with that, but i do find the front very spongy...sorry for hijacking the thread..
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Re: GPX250 Suspension

Postby MadKaw » Wed Nov 12, 2008 3:46 pm

Much better, but its still a bit soft.....

Although I did put 15w oil in the front as I had some laying around.
20 w would be better and I may even through another 40c at it.. :-)
Dave
2010 Z1000
ex bikes
05 ZX-10R Race Bike - No.77
95 ZXR750R M Race Bike - No. 75
98 ZX9R Race Bike - No. 000
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Re: GPX250 Suspension

Postby MrWasabi » Wed Nov 12, 2008 3:47 pm

Cool, sounds like i have a weekend project :D
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Re: GPX250 Suspension

Postby gpxpunk » Wed Nov 12, 2008 4:02 pm

i have no adjustment in the back, but if the zzr rear suspension does, can the zzr rear suspension be swapped in my gpx250?
1987 GPX250R. memories
2002 ZX7R . sold!!!!

I want My 7r BACK!!!!!!! Grrrrrr
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Re: GPX250 Suspension

Postby gpxpunk » Fri Nov 14, 2008 8:58 am

Found a adjustable zzr250 shock on ebay so hopefully i get it then set it hard for my heavy arse, and should be all sweet. :lol:
Hopefully be all good for next pits sunday ride{23.11} :twisted:

All fun, and hopefully have the front done and sprokets and new chain, haha i have all the parts just no time and the bro {mechanic} is worse then me for time coz i have no idea on that shit, SO I NEED HIM TO SHOW ME THE WAY. 8)
1987 GPX250R. memories
2002 ZX7R . sold!!!!

I want My 7r BACK!!!!!!! Grrrrrr
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Re: GPX250 Suspension

Postby Daisy » Fri Nov 14, 2008 12:27 pm

Yes, the ZZR250 shock is a bolt in swap - but it is about 10mm shorter. My skinny arse didn't have a problem with that.
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Re: GPX250 Suspension

Postby gpxpunk » Fri Nov 14, 2008 3:10 pm

Daisy wrote:Yes, the ZZR250 shock is a bolt in swap - but it is about 10mm shorter. My skinny arse didn't have a problem with that.



thanks for that, yeh thats good, but ill have to set for its hardest setting, cant wait lol
1987 GPX250R. memories
2002 ZX7R . sold!!!!

I want My 7r BACK!!!!!!! Grrrrrr
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Re: GPX250 Suspension

Postby Six Addict » Fri Nov 14, 2008 4:08 pm

Daisy wrote:Yes, the ZZR250 shock is a bolt in swap - but it is about 10mm shorter. My skinny arse didn't have a problem with that.


spacer??
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Re: GPX250 Suspension

Postby Daisy » Fri Nov 14, 2008 8:33 pm

Dunno how you'd space it - through bolts top and bottom.
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