Looking for sprocket

[Carlriddle]

I'm haveing a real time sourceing a smaller front sprocket for the zx12.  Seems Kawa used a 12T output shaft on the zx9, some zx10, z12, zx14 but nothing avail smaller than 15t sprocket.    Really dont want to go larger in rear, looking for a 13 front.  Anyone with any sources to try.  Being shot down by the reg spots for custom sprocket.

[hermie]

Call sprocket specialists

[Yummi]

Call Dieter, he has the hook up.  Well, if he has time.

[Carlriddle]

  I had a flash back. 

No on Sprocket Specialist
No on Sidewinder
No on crossing it over to another bike with a different offset sprocket(did find 14T)

Best option so far, cut out center spine, press into tooth size I want have welded.  Or go bigger on rear sprocket.

Got a drag rack mfg looking and a true sprocket mfg checking too.....

[thedoctor]

Check JT sprocket site. Did a quick check, found CBR600 has Z12 spline but, 28.7 od instead of 28.  Tim

[Carlriddle]

What yr.  Thats the size.  need 28.7

[thedoctor]

I was mistaken, it is 28 od ,also 14 is as low as they go. It was 87 to 98 cbr600. Their site has specs on spline size, so you may find one yet. Tim  sorry Carl

[Carlriddle]

That is a great site, I've looked at every sprocket there over last couple days.     Hoping a couple of the leads can come thru, else I'll probably have to swap rear sprockets.

[Voodoochikin04]

im assuming youve checked other models of kawasaki for the smaller sprocket?  or older models?  i found on my 2003gsxr that it used the same spline and sprockets were interchangable with 1990's suzuki katanas...    good luck.

[Carlriddle]

looks like half of all bikes ever made used the 13 spline shaft.  the 12 spline was only on mabye 6 models over the last 20 yrs.  tough to cross

[Carlriddle]

Local machine shop cut the splined area out of an old zx12 that came with motor and bored a hole into another 12T sprocket  to fit.  Nice V for a weld.  Now my question, Should I try to re-heat treat the sprocket? 

[fabr]

Yes ,but before you can HT  you must know what the material is . No way around that.

[Carlriddle]

4130 chromoly.  standard sprocket stuff.  Just wonder if the surface hardness would be lessened from the weld?  Not worried about weld, just wear on teelth and spline. 

[fastcorvairs]

4130 chromoly.  standard sprocket stuff.  Just wonder if the surface hardness would be lessened from the weld?  Not worried about weld, just wear on teelth and spline.

don't know Carl but I think I would try to stay with something that would be off the self or carry and extra or two with me.  Don't want to come all the way to LS and break one and not have a replacement.  worse let all the way to St Anthony.

[fabr]

4130 chromoly.  standard sprocket stuff.  Just wonder if the surface hardness would be lessened from the weld?  Not worried about weld, just wear on teelth and spline.

You can/need to have it heat treated  after welding then. Find a HT shop in your area.