KX Riders

Maintenance & Technical => KX500 Original => Topic started by: Captainc on August 05, 2015, 10:19:20 AM

Title: Kx500 rear shock alternatives
Post by: Captainc on August 05, 2015, 10:19:20 AM
Does anybody know if any modern shocks fit the 500? I'm sorry if this has been covered before
Title: Re: Kx500 rear shock alternatives
Post by: sandblaster on August 05, 2015, 11:32:38 AM
Yep.
Forks, run anything from a KX450F up to 2015 if you have a 89 or newer.
Use 97-04 KX500 triples.
Title: Re: Kx500 rear shock alternatives
Post by: alward25 on August 05, 2015, 11:49:09 AM
for front forks only, rear shock, the 500 has a really good rear shock if you valve and spring it for you.  I just set a 500 shock next to a 450 shock to refresh my memory and the 450 would hit the exhaust and is also longer.
Title: Re: Kx500 rear shock alternatives
Post by: sandblaster on August 05, 2015, 01:50:51 PM
Hey Alex.
What year of rear shock did you try?
I think Motorrad is running a 07 or 08 KX450F rear shock on his early 90's blue fork..
Title: Re: Kx500 rear shock alternatives
Post by: sandblaster on August 05, 2015, 02:01:56 PM
I just confirmed that Motorrad is running his 91 rear shock that has been gone through...
Bummer....
He says you could make it work but it sounds like it would be more work then it is worth.
Title: Re: Kx500 rear shock alternatives
Post by: alward25 on August 05, 2015, 02:10:10 PM
(http://i1240.photobucket.com/albums/gg485/alward25/KX%20500%20Parts/photo13_zpssvr6d8zl.jpg)

2000 kx 500 shock and the 07-08 kx 450 shock that Motorrad was going to use.
Title: Re: Kx500 rear shock alternatives
Post by: 81cr450 on August 05, 2015, 03:03:04 PM
The innerards of forks have definetly progressed , has the shock been re-invented? same basic guts clear back to the mid-80s right?
Title: Re: Kx500 rear shock alternatives
Post by: alward25 on August 05, 2015, 03:49:25 PM
the one thing is high speed and low speed rebound, only the newer stuff has it.  The strut rod diameter are bigger the newer you go.  If you buy an aftermarket valve and rebuild your shock it will suite most people very well.  Forks, twin chamber vs. open chamber and there is most certainly a lot in the newer forks.
Title: Re: Kx500 rear shock alternatives
Post by: dave916 on August 06, 2015, 03:37:10 AM
(http://i1240.photobucket.com/albums/gg485/alward25/KX%20500%20Parts/photo13_zpssvr6d8zl.jpg)

2000 kx 500 shock and the 07-08 kx 450 shock that Motorrad was going to use.

stock exhaust is going to be issue with 450 shock?
Title: Re: Kx500 rear shock alternatives
Post by: sandblaster on August 06, 2015, 04:03:18 AM
According to Motorrad and Alex, yes, the exhaust will hit.
Title: Re: Kx500 rear shock alternatives
Post by: alexander-vmann on August 06, 2015, 10:57:54 PM
think the older kx250f have a more straigth out resivouar that migth just clear the exhaust
Title: Re: Kx500 rear shock alternatives
Post by: Anchefonk on January 18, 2016, 06:45:12 PM
After reading this topic I purchased a 2007 Kxf 450 shock.

I thought that swapping the Clevis will make the Kxf shock the same length of the original kx500 shock.... No luck.

The Kxf shock its 1 cm longer, so what shoul I do?

1) ride with a 1cm longer shock?
2) dissemble both shocks, reuse the kx500 shaft and Clevis into the kxf450 shock using the piston and valving from the kxf450?

Any ideas?
Thx!
Title: Re: Kx500 rear shock alternatives
Post by: Anchefonk on January 18, 2016, 08:13:57 PM
(http://s12.postimg.org/adz4ax7qx/image.jpg) (http://postimg.org/image/adz4ax7qx/)

(http://s12.postimg.org/lp1rzaem1/image.jpg) (http://postimg.org/image/lp1rzaem1/)
Title: Re: Kx500 rear shock alternatives
Post by: sandblaster on January 19, 2016, 03:27:03 AM
I put a 08 KX450F shock on my 88 KX500

(http://www.oem-cycle.com/forum/download/file.php?id=3824)

But I haven't gone any further yet... The pipe hits the shock which is the big issue to solve.

https://youtu.be/IKh9uMr2l8Y (https://youtu.be/IKh9uMr2l8Y)

And... I don't like running the pipe over the reservoir.
It would work but it's not the best...
Title: Re: Kx500 rear shock alternatives
Post by: umberto on January 19, 2016, 03:33:36 AM
What about switching to a CR 500 pipe?  It would be a bit of fabrication to combine with the KX pipe and you would need to use a CR silencer, but it would give you clearance for the shock.
Title: Re: Kx500 rear shock alternatives
Post by: Anchefonk on January 19, 2016, 04:06:54 AM
That's what I'm going to do. CR500 pipe. I got one second hand fairly cheap.

But, Sandblaster, did your Kxf shock with the kx500 clevis measure the same as the stock kx500 shock!?

I don't know if it will create handling and clearance issues if mine it's 1 cm longer
Title: Re: Kx500 rear shock alternatives
Post by: sandblaster on January 19, 2016, 05:38:08 AM
I don't know... I just popped it in to see what I had.
I don't have any measurements just yet.
Title: Re: Kx500 rear shock alternatives
Post by: Dutch-K5 Fan on January 19, 2016, 06:21:36 AM
I remember DC Concept used a 99 kx250 shock or piggyback for that.
(https://lh3.googleusercontent.com/-_VJVjapvW3M/Uynz9KdTYjI/AAAAAAAAAts/WDfjZI8_0jU/s400-Ic42/a108351_2.jpg)


Dutchie
Title: Re: Kx500 rear shock alternatives
Post by: Anchefonk on January 19, 2016, 07:07:31 PM
If for a reason I install the Kxf shock with the kx500 clevis (1cm longer than the kx500 stock) anyone knows if changing the dogbones will bring the rear to its original setting?  I mean, is there any way to calculate the length of a custom Set of dogbones so the rear will perform similar to the stock version (or improved) with a 1cm longer shock??
Or, What If I cut 1 cm de KXF shaft?

Thank you!
Title: Re: Kx500 rear shock alternatives
Post by: Dutch-K5 Fan on January 20, 2016, 05:30:46 AM
I would first take the spring of and install
the shock to see how it goes with travel.
If it works, spring back on and set the sag to see how
It al goes. Still oke, ask your suspension guy what he thinks.


Dutchie