IRD Headset Double RollerDrive Threaded 1"
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– Needle bearings on both top and bottom assemblies
– Made by Tange-Seiki in Japan
– High polished zinc-plated aluminum
–Headsets with needle (roller) bearings can assist with fork shimmy.
– ISO standard, crown race 26.4
– Stack height: 40.7mm
– Weight 110g