I am pleased to announce that I finally had the time to bring my bike for testing the fitting of the front sprockets of John Snead.
Both the 17 tooth and the 19 tooth fit very well to my (early) CR May 2012. I didn't try riding with the 19 tooth yet, but the 17 tooth is really fun. As Richard-7 says, the engine is running much smoother at low speeds with the one tooth down sprocket compared to the stock one. And the additional torque to the rear wheel is remarquable!
Richard writes in his manual that speedometer reads approx. 10mph faster with the one tooth down sprocket. I will check this within the next days with my GPS and report...
I guess that the rev counter will still read correctly with a different sprocket, or am I wrong?
Question to Richard-7: Did you switch back to the stock sprocket or did you leave the 17 or 19 tooth on your bike?
Many thanks to John Snead once again!