

BLACK COATED treatment: The bearing rings are treated before assembly with a special process that guarantees greater resistance to corrosion of the components. The rings are treated on the track, in order to guarantee this “coverage” also in the rolling part of the ball. Differentiated LUB seals: on one side LU (which guarantees greater protection from dust and water) in black NBR material to be mounted on the outside, on the other side LB (which guarantees greater smoothness) in blue NBR material to be mounted on the inside. Specific grease L21: the grease has characteristics that match perfectly with the application of the bike, in fact it guarantees excellent lubrication of the bearing and has a very low viscosity level that allows for low friction and excellent smoothness.