19mm different.
Edit: 1471mm for the one, 1490 for the other. See here:
https://www.motorcyclespecs.co.za/model/moto guzzi/moto_guzzi_v11_sport 00.htm
https://www.motorcyclespecs.co.za/model/moto guzzi/moto_guzzi_v11_cafe_sport 02.htm
or here, page 28 and page 421
https://guzzitek.org/gb/ma_us_uk/1100/V11_1999-2003_Atelier(Compil-GB-D-NL).pdf
As far as I'm concerned, 1490 is a nice, neat, round number that works very well. 1471 seems somehow insufficient.