The headset is an important part of your road or racing bike. It is what connects the fork with the wheel to the frame of the bike. For vintage bikes, there are several standards. The main ones are the French thread ( 25x1 ), or the English thread ( BSC ), don't hesitate to ask us for advice. They are generally made of aluminium (lighter) or steel, stronger and more economical.
YST Corp 9020 headset
side clamp with 2.5 mm allen key
for 21.1 mm BMX stem
material: aluminium
ball bearings on top and needle bearings on bottom
outer cup diameter: 30 mm
inner cup diameter: 27 mm
fork cone diameter: 26.8 mm
weight: 135 g
condition : nos , very good condition
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