The world’s lightest headset bearing
UltraTop is very light upper bearing (lower bearing is not included).
It is a superlight radial micro cartridge bearing.
-Ultrastar expander and black HyperCap are supplied
-For 1 1/8" upper diameter fork
-Weight saving: for a 41mm bearing, weight is 1/2
-Road or MTB XC use
-Weights (without expander/cap):
Please measure the inside diameter of the frame headtube (upper part) to choose the right UltraTop model.