19 tooth sprocket

[hairless biker]

  Hi could anyone help meplease, where could i get a 19 tooth sprocket or is it possible to still come down more on the rear than the after market options out there,would be mighty glad of any advice or ideas to help me along thank,s hairless 

[Pat Conlon]

http://www.sprocketspecialists.com/  Give them a call, they can fix you up.

However;

I don't know of anyone who has successfully fit the larger diameter 19 tooth countershaft sprocket inside the case of our FJ engine. The outside edges of the 530 chain may rub the engine case as it wraps around the 19 tooth sprocket.
Re: Rear sprocket: Look at your back rim closely. See the area where the sprocket mounts? Anything smaller than a 38 tooth sprocket the chain will hit the outside diameter of the rim/sprocket area.
What if you went to some aftermarket rim where you could physically fit a 37 or 36 tooth sprocket? Well, you are not out of the woods yet....
If you raised your rear end like you should, (shorter dog bones, Penske shock, etc.) you need a certain height rear sprocket for chain clearance to the swing arm pivot area. A 37 or 36 tooth rear sprocket will be too small and your chain would grind away at the swing arm chain guard.

Cheers!