Hi Montesa fans I think I have a genuine 414 (12) tooth front sprocket brand new, I have was cleaning out my shed on the weekend making way for the CZ 400 and what a find, I think it came with the 414 that I rode for Lyle O'brien in the ealy 80's.
It has a little m with a circle around it and a flange with a flat spot on it. does it sound like a genuine sprocket ? HL