UltraStar 4 4.7g.
The king of all stars.
Weight: 4.7g. (1'1/8), 5.7g. (1'1/4).
Expander: 7075 T6 CNC.
Compatible: standard 1'1/8 and 1'1/4 steer tubes, standard M6 preload bolts.
Diameters 1'1/8: min. 22.8mm max. 25.2mm.
Diameters 1'1/4: min. 25mm max. 27.2mm.
Available for 1'1/8 and 1'1/4 steer tubes.
It seemed impossible but we improved it again.
Its safe and cool to insert and tune your expander anytime you need without damaging fork steer tube inner surface.
Carbon fiber steer tubes require it, steel insert sharp edges can induce fatigue failures.
100% made in Italy
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user manual