Recent Posts

31

KX250 / KX125 / 1999 KX250 Nikasil barrel help

« Last post by Andrew_Leitch07 on March 13, 2025, 07:28:57 AM »

Recently bought a KX250 from 99, stripped it to do a top end just to freshen the bike up and see the barrels in a bad state. Looks like the bike ran a bit hot/lean which scored the nikasil. From what I know this barrel was renilasiled about 50 hours ago and the bikes running an A piston. Any advice for how I should proceed?

32

In General... / Re: KX 500 wheels

« Last post by SMP396 on March 10, 2025, 05:07:02 AM »

Really?  No one knows of anyone who has wheels for these bikes?

33

In General... / KX 500 wheels

« Last post by SMP396 on March 07, 2025, 04:39:44 AM »

Who has a Direct bolt up replacement for a set of wheels for the 500. I’m trying to eliminate having to buy the hubs, the spokes and the rim separately and build it.
Anyone have a good link or any opinions on what brand to buy.

34

KX250 / KX125 / Re: 1997 KX250 stator

« Last post by wingrider101+ on January 30, 2025, 10:01:24 AM »

wow, 70 something views and Zero help given... I'm sorry I'm no help ether ... but I get similar results when I ask questions on this site.

... Maybe I prompted someone knowledgeable to reply...?? 

35

KX250 / KX125 / Re: 1990 KX250 swingarm issue

« Last post by wingrider101+ on January 30, 2025, 09:58:11 AM »

 Some pictures of the Swing arm - with bearings installed might help us see what's going on there.
Also some pictures of the assembly as you are trying to install it--- Like, show what doesn't fit and where.

 I believe the swing arm assembly needs to be fitted near Exactly square/parallel with the frame/mounting bolt holes.. slightly crooked and it won't fit.

36

KX250 / KX125 / Re: 1999 KX250 Carb questions

« Last post by wingrider101+ on January 30, 2025, 09:51:08 AM »

 Anybody?

37

KX250 / KX125 / Re: 1990 KX250 swingarm issue

« Last post by GCrites80s on January 23, 2025, 01:18:48 PM »

Hey all,

I bought a '90 KX250 as a project bike to tear down and restore.  It was fully assembled when I got it. I tore it all down, cleaned, replaced anything necessary and am now starting to reassemble. Problem is, I can't get the swingarm back on. It will not fit back between the frame and bracket on the brake side.  The chain side fits fine. For the freaking life of me I can't figure out why.  It's just too tight to fit by 1-2mm.  Again, it was assembled when I got it, so it's clearly user error.  Any ideas??  Thanks in advance!!

At this point I'd get a pike and pry the framerails back apart!

38

KX250 / KX125 / 1990 KX250 swingarm issue

« Last post by Eric618 on January 19, 2025, 02:47:54 AM »

Hey all,

I bought a '90 KX250 as a project bike to tear down and restore.  It was fully assembled when I got it. I tore it all down, cleaned, replaced anything necessary and am now starting to reassemble. Problem is, I can't get the swingarm back on. It will not fit back between the frame and bracket on the brake side.  The chain side fits fine. For the freaking life of me I can't figure out why.  It's just too tight to fit by 1-2mm.  Again, it was assembled when I got it, so it's clearly user error.  Any ideas??  Thanks in advance!!

39

KX250 / KX125 / 1997 KX250 stator

« Last post by B.Gormley on January 07, 2025, 10:17:41 AM »

I bought a KX250 for restoration which seller said was 1998. Turns out its a mixture of parts between 1993 and 1997.
Stator resistance test rsults:
White/ red - White/green      224ohms
Red - Red/Black                    510ohms
White - Red                           no reading.
These are the tests my manual requires.
White/ red - White/green      396-594ohms
Red - Red/Black                    288-432ohms
White - Red                            14-21ohms
If I test White - Ground I get 20ohms.
All coils prove positive for continuity.
Is the manual correct?
Should this stator work?

40

KX Repair Manuals Online / 1997 KX250 MANUAL

« Last post by B.Gormley on January 07, 2025, 08:42:36 AM »

I bought a KX250 for restoration which seller said was 1998. Turns out its a mixture of parts between 1993 and 1997.
Stator resistance test rsults:
White/ red - White/green      224ohms
Red - Red/Black                    510ohms
White - Red                           no reading.
These are the tests my manual requires.
If I test White - Ground I get 20ohms.
All coils prove positive for continuity.
Is the manual correct?
Should this stator work?