IRD Headset RollerDrive 1" Silver Zinc
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– Made by Tange-Seiki in Japan
– High polished zinc-plated aluminum
– Caged ball bearings on top
– Needle bearing on the bottom assembly
– Headsets with needle (roller) bearings can assist bikes with fork shimmy.
– ISO standard, crown race 26.4
– Stack height: 35.9mm
– Weight 110g