89 GPX 250 rear suspension replacement/upgrade

[mikemike104]

Now, dont hate me if there is already a post on this subject as I did have a look but did not find anything relevant.

I want to upgrade the rear for a few reasons:

1. Because I'm not the lightest rider (90kg, ok by far not the heavist either)
2. The rear already seems somwehat saggy (bike is old)
3. I will have this bike for awhile to come.

Now, I have searched the net, Kb and yellow pages but come up with nil.

The question I will ask is this.

Where will I find a aftermarket replacement or alternative parts at reasonable cost?

Nobody say GPX500 either cause I have been all over the net and it would seem this bike (and or parts do not exist in NZ)

Thank you for your assistance in advance. :rockon:

Mike

[Robert Taylor]

Now, dont hate me if there is already a post on this subject as I did have a look but did not find anything relevant.

I want to upgrade the rear for a few reasons:

1. Because I'm not the lightest rider (90kg, ok by far not the heavist either)
2. The rear already seems somwehat saggy (bike is old)
3. I will have this bike for awhile to come.

Now, I have searched the net, Kb and yellow pages but come up with nil.

The question I will ask is this.

Where will I find a aftermarket replacement or alternative parts at reasonable cost?

Nobody say GPX500 either cause I have been all over the net and it would seem this bike (and or parts do not exist in NZ)

Thank you for your assistance in advance. :rockon:

Mike

I guess you need to clarify what ''reasonable cost'' is as that will very much dictate whether you can go forward with this or not. The problem with this capacity range and type of bike is that worldwide they are largely considered as a relatively low cost commuter bike and are not the sort of bike that people go looking for better performing shocks for, so as there is little demand better performing aftermarket shocks are not generally made for them. So its not so easy to find something other than oem replacement or maybe a bargain basement Chinese / Asian shock that will ''fill the gap'' but unlikely give you the improvement you are looking for ( unless your current shock is ''toasted'' internally )
Have you tried for Hagon / YSS etc? The other issue is you will need a spring rate firmer than the standard rate.
If the damping is still ''acceptable'' it may be possible to with a bit of adaptation respring your existing shock

[sil3nt]

I would say you have seen this http://faq.ninja250.org/wiki/Rear_suspension_upgrades

I have an 08 shock (http://faq.ninja250.org/wiki/Installing_an_08_shock_on_a_Classic) you can buy from me. I got it off trademe with the intention of installing it. Never got around to it. It has adjustable preload.

You can have it for $60.

[mikemike104]

I would say you have seen this http://faq.ninja250.org/wiki/Rear_suspension_upgrades

I have an 08 shock (http://faq.ninja250.org/wiki/Installing_an_08_shock_on_a_Classic) you can buy from me. I got it off trademe with the intention of installing it. Never got around to it. It has adjustable preload.

You can have it for $60.

Now thats a reasonable solution :done:

[mikemike104]

I guess you need to clarify what ''reasonable cost'' is as that will very much dictate whether you can go forward with this or not. The problem with this capacity range and type of bike is that worldwide they are largely considered as a relatively low cost commuter bike and are not the sort of bike that people go looking for better performing shocks for, so as there is little demand better performing aftermarket shocks are not generally made for them. So its not so easy to find something other than oem replacement or maybe a bargain basement Chinese / Asian shock that will ''fill the gap'' but unlikely give you the improvement you are looking for ( unless your current shock is ''toasted'' internally )
Have you tried for Hagon / YSS etc? The other issue is you will need a spring rate firmer than the standard rate.
If the damping is still ''acceptable'' it may be possible to with a bit of adaptation respring your existing shock

Thank you for your input.

[mikemike104]

I would say you have seen this http://faq.ninja250.org/wiki/Rear_suspension_upgrades

I have an 08 shock (http://faq.ninja250.org/wiki/Installing_an_08_shock_on_a_Classic) you can buy from me. I got it off trademe with the intention of installing it. Never got around to it. It has adjustable preload.

You can have it for $60. SOLD !

Thank to the man named in the above post I now have a completely new bike :yes:

With this 08 shock installed the bike no longer sags when I get on, or even when I take it off the stand for that matter.

It feels great while cornering, in fact with the old shock the bike was so easy to upset mid corner, now its like she's on RAILS :woohoo:

The only down side thus far is that now that the rear feels so good the front's now noticeably soggy :facepalm:

[sil3nt]

SOLD !

Thank to the man named in the above post I now have a completely new bike :yes:

With this 08 shock installed the bike no longer sags when I get on, or even when I take it off the stand for that matter.

It feels great while cornering, in fact with the old shock the bike was so easy to upset mid corner, now its like she's on RAILS :woohoo:

The only down side thus far is that now that the rear feels so good the front's now noticeably soggy :facepalm:Hmm that sounds good. Can i buy it back? Haha

Chuck some more oil in the forks to help stiffen the front. Cheap and apparently a fairly worthwhile exercise.
http://faq.ninja250.org/wiki/How_do_I_replace_the_fork_oil%3F

If you got the money talk to the man who posted above about getting some Race Tech valve emulators
http://faq.ninja250.org/wiki/Are_Valve_Emulators_worthwhile%3F
Costs about 3 arms and half a leg though!

[owner]

I'm looking for a late model shock that will fit a 2003 gsx 250?? Anyone?
that 60$ sounds like a great price too
The bike has 70000 kms on it an the way it rides it feels like the rider must have been 150 kgs or 2 up for most of those kms