HEADSET TYPE: Threadless External Cup
STEERER TUBE: Straight 11/8"
MATERIAL: Alloy
STACK HEIGHT: 30mm
UPPER CUP: 49mm External Cup
LOWER CUP: 44mm External Cup
UPPER BEARING: Industrial Sealed Bearing 52mm OD
LOWER BEARING: Industrial Sealed Bearing 52mm OD
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FSA - ORBIT XTREME PRO HEADSET