this is good news I think that the new B-Boxes are better machined and that it does not reproduce the same stupidity of 1/2 reduction, the new reduction is 1.947 or 19 teeth for 37 teeth which allows it to work all the teeth of the pinion on all the teeth of the crown, this will add about 5 km / h if it is mounted on a m3w 5 speed.
