I have a V-Strom 250 in France, cousin of your's Inazuma, I really like this bike but I would like to reduce the engine speed of my 250, for information at 90km / h the engine runs at 7000 rpm, passing to a pinion of 15 or 16 teeth ratio instead of 14, original is 14 * 47.
Do you have any links, personally I cannot find a 15 or 16 tooth sprocket. JT Sprockets does not produce it for information.
Who carried out this operation?
Thanks for your comments, it's a great bike!