Maintenance & Technical > KX500 Original

How Low Can You GO!? (Try 12T/52T!)

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TomL:
I bought a 12t and was going to dremel the case.  But when I took off the 13t I saw the chain was already scoring the case a bit.  After comparing the size of the 12t with the 13t, it looks like I would have to grind a full 1/8" into the case completely removing the flange and would expose the rubber seal.  I chickened out!  Would it hurt to expose that rubber seal???  Or would the seal fall out???  Very scary situation!!!  

Kawrider:  Is your rubber seal exposed with the 12t sprocket???

I wish I could just find a 55t for the rear.  Anyone know who sells one that big???  All I can find is 53t.

Timbowe:
Get a blank and get a machine shop to drill it for you. Should be too much. The blanks are quite cheap too start with. 5c from timbowe.

KXcam22:
Timbowe has a good point. I forgotten about that. We used to make rear sprockets for old euro bikes that steel wasnt avail.  As long as it has an odd number of teeth it will fit in a 3-jaw lathe chuck.  If I recall a #50 pitch blank is cheap  (<10$).  Here is what I used to do (well my buddy with the lathe actually):

1. Shave the tooth width a touch to fit the 530 chain
2. bore out the sprocket inside to fit the hub
3. use old sprocket as drilling template to drill mounting holes.
4. paint to keep the rust away.

Hope this helps. Cam.

Timbowe:
Just searching some old pages on this site. Sprocket specialist list a KDX rear custom made in sizes ranging from 38 - 74 tooth in alloy or 47 - 52 tooth in steel.www.sprocketspecialists.com/html/kawasaki3.shtm. Pretty sure that Kdx is same pattern.

jdv500:
toml,
 sorry for the late post, been jammed up here. gnarlyparts shows evrything up too a 55t in alum,(sprocket specialties brand). it has the wide teeth, thick.fills the whole inner cavity of the link, not just down the centerline, and mud reliefs cut around the tooth ring as well, $39. been running these the whole time i've had the bike with continued great results. jdv

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