I bought rings for my V11 from a reputable Moto Guzzi supplier.
They carry the Freccia brand. No clue as to country of origin as they are marked Extra-EU. Which I was lead to believe meant anyone not in the EU Group.
The original compression ring is a straight rectangular profile.
The Freccia ring has a slight chamfer on both the top and bottom outboard edges. This reduces the total ring contact surface area which I assume will make the ring wear a bit more quickly.
The photo shows the Freccia ring left and stock ring right.
All the other dimensions are within .0001" of identical.
The Freccia box is marked as a BMW Part. Guess the R100 uses the same rings.
Should I be disturbed by this difference? Anyone else using these rings with no surprises?