-Oxide Coating Bearing-
The bearings feature a black oxide coating on the inner and outer races, enhancing the weather resistance of the headset bearings and extending their lifespan.
-P05 Steel Bearing-
The TRiPEAK S-Series features Po5 precision steel ball bearings, for reassuringly high smoothness and durability. 0.005 mm for eccentricity (out of roundness) of the track in the inner race. That´s precise.